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51. TheLa139(n,γ) cross section: Key for the onset of thes-process

Author: M. Krtička, R. Gallino, B. Haas, M. Embid-Segura, C. T. Papadopoulos, F. Voss, A. Herrera-Martinez, N. Patronis, Rene Reifarth, P. Pavlopoulos, J. M. Quesada, W. Dridi, L. Ferrant, Manuel Lozano, I. Savvidis, Michael Heil, L. Fitzpatrick, Nicola Colonna, Alberto Mengoni, J. Salgado, M. Calviani, E. Gonzalez-Romero, S. Marrone, V. Ketlerov, L. Sarchiapone, A. Poch, M. Igashira, C. Papachristodoulou, M. Kerveno, A. Plukis, L. Tavora, S. Walter, G. Cortes, P. M. Milazzo, P. E. Koehler, A. Goverdovski, F. Alvarez-Velarde, R. Vlastou, G. Aerts, J. Marganiec, S. Andriamonje, Gerald Badurek, Carlos Guerrero, P. Rullhusen, Heinz Oberhummer, E. Berthoumieux, R. Dolfini, H. Frais-Koelbl, J. Cox, P. F. Mastinu, S. David, M. C. Vincente, E. Kossionides, H. Álvarez, Laurent Tassan-Got, J. Andrzejewski, Marco Pignatari, P. Cennini, G. Tagliente, C. Massimi, C. Lamboudis, J. L. Tain, C. Pretel, E. Griesmayer, L. Marques, C. Paradela, J. Pancin, Roberto Capote, W.I. Furman, Carlo Rubbia, S. Lukic, V. Vlachoudis, P.A. Assimakopoulos, A. J. M. Plompen, M. Mosconi, E. Chiaveri, S. Isaev, D. Karamanis, I. Dillmann, D. Cano-Ott, F. Käppeler, G. Rudolf, I. Lopes, U. Abbondanno, C. Stephan, S. O'Brien, K. Fujii, I. Duran, A. Lindote, F. Neves, R. Terlizzi, K. Wisshak, V. Konovalov, C. Moreau, G. Vannini, M. Dahlfors, H. Wendler, P. Vaz, F. Gunsing, F. Gramegna, Ralf Plag, Alberto Ventura, Aaron Couture, L. Perrot, A. Pavlik, C. Domingo-Pardo, V. Chepel, F. Calviño, H. Leeb, P. Baumann, R. C. Haight, L. Audouin, Michael Wiescher, C. Eleftheriadis, Yacine Kadi, D. Villamarin, M. Rosetti, I. Goncalves, Thomas Rauscher, D. Karadimos, Alfredo Ferrari, R. Ferreira-Marques, A. Carrillo de Albornoz, F. Bečvář, and E. Jericha
Subjects: Physics, Nuclear and High Energy Physics, Range (particle radiation), Isotope, 010308 nuclear & particles physics, Resonance, 01 natural sciences, Nuclear physics, Cross section (geometry), Stars, 0103 physical sciences, Neutron, MAGIC (telescope), Atomic physics, s-process, 010303 astronomy & astrophysics
Abstract: The nuclear resonance parameters and the capture cross section of the neutron magic isotope 139La have been measured relative to 197Au in the energy range of 0.6 eV to 9 keV at the neutron time-of-flight (n TOF) facility at CERN. We describe the experimental apparatus and the data analysis procedures, which concerned mainly the efficiency correction by means of the pulse height weighting function technique and the determination of different background components. We extracted the resonance parameters and the main nuclear quantities such as the resonance integral RI = 10.8 ± 1.0 b, the average γ widths for s and p waves γ l=0 = 50.7 ± 5.4 meV and γ l=1 = 33.6 ± 6.9 meV, the nuclear level densities D l=0 = 252 ± 22 eV and D l=1 < 250 eV, and the neutron strength functions S0 = (0.82 ± 0.05) × 10−4 and S1 = (0.55 ± 0.04) × 10−4. These results represent a significant improvement over previous data. The deduced Maxwellian-averaged capture cross sections are important for the interpretation of the most recent spectroscopic observations in low-metallicity stars.
Published: 2007
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52. Measurement of the neutron capture cross section of thes-only isotopePb204from 1 eV to 440 keV

Author: V. Chepel, A. Pavlik, C. Domingo-Pardo, L. Tavora, P. Baumann, P. M. Milazzo, E. Griesmayer, G. Aerts, I. Goncalves, P. Cennini, M. Mosconi, C. Paradela, C. Stephan, S. O'Brien, R. Terlizzi, P. Rullhusen, Thomas Rauscher, Sara Bisterzo, S. Lukic, M. Embid-Segura, A. Herrera-Martinez, N. Patronis, W.I. Furman, M. Oshima, J. Andrzejewski, R. Gallino, G. Vannini, L. Sarchiapone, D. Karadimos, K. Fujii, Carlo Rubbia, V. Vlachoudis, Alberto Mengoni, M. Dahlfors, A. Lindote, C. Carrapiço, Michael Heil, P. Vaz, D. Villamarin, F. Käppeler, S. David, M. Igashira, V. Konovalov, Alberto Ventura, Manuel Lozano, Aaron Couture, R. Vlastou, A. J. M. Plompen, F. Voss, E. Kossionides, J. Marganiec, S. Andriamonje, M. Rosetti, C. Moreau, H. Frais-Koelbl, B. Haas, P. E. Koehler, Carlos Guerrero, Heinz Oberhummer, M. Kerveno, D. Karamanis, I. Dillmann, G. Tagliente, E. Berthoumieux, G. Rudolf, I. Lopes, J. Pancin, E. Chiaveri, D. Cano-Ott, M. C. Vincente, L. Perrot, G. Cortes, C. Pretel, L. Ferrant, V. Ketlerov, I. Duran, C. Papachristodoulou, Ralf Plag, Nicola Colonna, F. Gramegna, H. Alvarez-Pol, J. Salgado, A. Poch, L. Fitzpatrick, S. Isaev, U. Abbondanno, P. F. Mastinu, I. Savvidis, Roberto Capote, P.A. Assimakopoulos, F. Gunsing, F. Neves, C. Eleftheriadis, J. Cox, Laurent Tassan-Got, Rene Reifarth, Yacine Kadi, R. C. Haight, P. Pavlopoulos, L. Audouin, J. M. Quesada, Michael Wiescher, M. Krtička, F. Calviño, H. Leeb, C. T. Papadopoulos, E. Gonzalez-Romero, A. Plukis, W. Dridi, E. Jericha, S. Marrone, K. Wisshak, C. Lamboudis, J. L. Tain, Alfredo Ferrari, R. Ferreira-Marques, H. Wendler, S. Walter, A. Goverdovski, F. Alvarez-Velarde, Gerald Badurek, R. Dolfini, and F. Bečvář
Subjects: Physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, Monte Carlo method, 01 natural sciences, Resonance (particle physics), Neutron temperature, Nuclear physics, Cross section (physics), 0103 physical sciences, Neutron cross section, r-process, Neutron, Atomic physics, s-process, 010303 astronomy & astrophysics
Abstract: The neutron capture cross section of Pb204 has been measured at the CERN n_TOF installation with high resolution in the energy range from 1 eV to 440 keV. An R-matrix analysis of the resolved resonance region, between 1 eV and 100 keV, was carried out using the SAMMY code. In the interval between 100 keV and 440 keV we report the average capture cross section. The background in the entire neutron energy range was reliably determined from the measurement of a Pb208 sample. Other systematic effects in this measurement were investigated and precisely corrected by means of detailed Monte Carlo simulations. We obtain a Maxwellian average capture cross section for Pb204 at kT=30 keV of 79(3) mb, in agreement with previous experiments. However our cross section at kT=5 keV is about 35% larger than the values reported so far. The implications of the new cross section for the s-process abundance contributions in the Pb/Bi region are discussed. © 2007 The American Physical Society.
Published: 2007
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53. Measurement of the 197Au (n,γ) cross section at n_TOF: towards a new standard

Author: A. J. M. Plompen, G. Rudolf, I. Lopes, A. Herrera-Martinez, N. Patronis, C. Pretel, Arnaud Ferrari, James L. Cox, A. Pavlik, D. Karamanis, I. Dillmann, C. Domingo-Pardo, Alberto Mengoni, S. David, G. Tagliente, B. Haas, F. Gramegna, G. Aerts, G. Vannini, Corrie S. Moreau, K. Fujii, E. Kossionides, Javier Praena, P. E. Koehler, L. Tavora, F. Voss, P. Rullhusen, L. Sarchiapone, F. Becvar, M. Dahlfors, C. Carrapiço, W. Dridi, Nicola Colonna, I. Savvidis, D. Cano-Ott, J. Salgado, A. Poch, J. Andrzejewski, Rene Reifarth, Vasilis Vlachoudis, P. Vaz, A. Lindote, Aaron Couture, Matthias Heil, S. Lukic, R. C. Haight, J. M. Quesada, L. Tassan-Got, P. Cennini, F. Käppeler, F. Alvarez-Velarde, A. Plukis, J. Pancin, C. Paradela, G. Cortes, Gerald Badurek, R. Vlastou, M. Mosconi, J. Marganiec, S. Andriamonje, Y. Kadi, L. Audouin, I. Duran, E. Chiaveri, E. Berthoumieux, P. F. Mastinu, S. O'Brien, C. Lampoudis, M. Krtička, C. Eleftheriadis, R. Ferreira-Marques, T. Martinez, A. Ventura, R. Terlizzi, M. C. Vincente, Christoph A. Stephan, Michael Wiescher, Marco Calviani, Thomas Rauscher, Roberto Capote, U. Abbondanno, P.A. Assimakopoulos, D. Karadimos, Marco T. Pigni, F. Neves, P. M. Milazzo, E. González-Romero, C. Santos, L. Ferrant, D. Villamarin, E. Jericha, F. Gunsing, P. Pavlopoulos, Cristian Massimi, H. Leeb, K. Wisshak, Masayuki Igashira, M. Kerveno, C. T. Papadopoulos, C. Rubbia, Isabel S. Gonçalves, S. Marrone, H. Álvarez, J. L. Tain, M. Embid-Segura, Manuel Lozano, L. Perrot, F. Calvino, V. Chepel, P. Baumann, W.I. Furman, C. A. Papachristodoulou, S. Walter, Ralf Plag, Carlos Guerrero, Heinz Oberhummer, Universitat Politècnica de Catalunya. Departament de Física i Enginyeria Nuclear, and Universitat Politècnica de Catalunya. GREENER - Grup de recerca d'estudis energètics i de les radiacions
Subjects: Physics, Neutron cross sections, Large Hadron Collider, Nuclear physics, Resonance, Nuclear data, Calorimetry, Neutrons -- Seccions, Calorimeter, Cross section (physics), Física::Astronomia i astrofísica [Àrees temàtiques de la UPC], Calorimetria, Neutron cross section, Física nuclear, Neutron, Nuclear Experiment, Absorption (electromagnetic radiation)
Abstract: Two different detectors and techniques are employed at n TOF facility, at CERN, to improve the accuracy of the neutron capture cross section of 197Au(n,γ): a total absorption calorimeter and a set of C6D6. The accurate knowledge of this cross section is of great importance for all the (n,γ) reactions study. The neutron capture cross section and nuclear resonce parameters of the 197Au have been measured in the energy range of 1 eV to 1 kev. The present work shows in average a good agreement with evaluated data libraries, although sizeable differences have been observed for some resonances. Two new resonances have also been discovered. The accuracy of the resonance partial widths has been improved and the main nuclear quantities such as the neutron strength function have been extracted.
Published: 2007
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54. Measurement of the 90,91,92,93,94,96Zr(n,γ) and 139La(n,γ) cross sections at n_TOF

Author: A. J. M. Plompen, G. Aerts, G. Rudolf, I. Lopes, A. Herrera-Martinez, N. Patronis, S. David, Arnaud Ferrari, Alberto Mengoni, G. Tagliente, I. Savvidis, F. Gunsing, M. Embid-Segura, James L. Cox, G. Cortes, Cristian Massimi, H. Álvarez, C. Eleftheriadis, Manuel Lozano, R. Vlastou, E. Berthoumieux, M. C. Vincente, J. L. Tain, Christoph A. Stephan, L. Ferrant, F. Gramegna, J. Salgado, F. Alvarez-Velarde, A. Pavlik, Thomas Rauscher, A. Poch, U. Abbondanno, C. Domingo-Pardo, Carlos Guerrero, Gerald Badurek, K. Wisshak, D. Villamarin, A. Ventura, D. Karadimos, L. Tavora, C. T. Papadopoulos, Corrie S. Moreau, Heinz Oberhummer, E. González-Romero, E. Kossionides, Roberto Capote, C. Rubbia, Javier Praena, P. Pavlopoulos, C. Pretel, M. Dahlfors, P.A. Assimakopoulos, J. Marganiec, S. Andriamonje, A. Lindote, Rene Reifarth, D. Cano-Ott, P. Vaz, J. Andrzejewski, C. Santos, E. Chiaveri, P. F. Mastinu, H. Leeb, Isabel S. Gonçalves, S. Marrone, Aaron Couture, P. Rullhusen, W.I. Furman, Masayuki Igashira, S. Lukic, J. M. Quesada, M. Kerveno, L. Tassan-Got, G. Vannini, J. Pancin, F. Kaeppeler, K. Fujii, M. Krtička, L. Sarchiapone, C. A. Papachristodoulou, B. Haas, P. Cennini, F. Voss, S. Walter, F. Becvar, R. Ferreira-Marques, T. Martinez, F. Neves, C. Lampoudis, Ralf Plag, P. M. Milazzo, Nicola Colonna, M. Mosconi, W. Dridi, Vasilis Vlachoudis, Marco Calviani, S. O'Brien, R. Terlizzi, E. Jericha, Matthias Heil, Y. Kadi, A. Plukis, P. E. Koehler, I. Duran, Marco T. Pigni, C. Carrapiço, D. Karamanis, I. Dillmann, R. C. Haight, C. Paradela, L. Audouin, Michael Wiescher, V. Chepel, P. Baumann, L. Perrot, F. Calvino, Universitat Politècnica de Catalunya. Departament de Física i Enginyeria Nuclear, and Universitat Politècnica de Catalunya. GREENER - Grup de recerca d'estudis energètics i de les radiacions
Subjects: Physics, Astrofísica nuclear, Neutron cross sections, Física [Àrees temàtiques de la UPC], Isotope, Red giant, Nuclear Theory, Nuclear data, Neutrons -- Seccions, Resonance (particle physics), Nuclear physics, Cross section (physics), Neutron capture, Nuclear reactors, Reactors nuclears, Nuclear astrophysics, Nuclear Experiment, s-process
Abstract: Neutron capture cross sections of Zr and La isotopes have important implications in the field of nuclear astrophysics as well as in the nuclear technology. In particular the Zr isotopes play a key role for the determination of the neutron density in the He burning zone of the Red Giant star, while the 139La is important to monitor the s-process abundances from Ba up to Pb. Zr is also largely used as structural materials of traditional and advanced nuclear reactors. The nuclear resonance parameters and the cross section of 90,91,92,93,94,96Zr and 139La have been measured at the n TOF facility at CERN. Based on these data the capture resonance strength and the Maxwellian-averaged cross section were calculated.
Published: 2007
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55. The neutron capture cross sections of 237Np(n,gamma) and 240Pu(n,gamma) and its relevance in the transmutation of nuclear waste

Author: C. Carrapiço, A. Ventura, M. Dahlfors, P. Vaz, H. Leeb, P. Cennini, A. Plukis, Aaron Couture, J. Pancin, C. Santos, F. Voss, F. Becvar, Nicola Colonna, Vasilis Vlachoudis, J. Marganiec, S. Andriamonje, E. Chiaveri, P. F. Mastinu, E. Jericha, Corrie S. Moreau, R. Vlastou, E. Berthoumieux, M. Mosconi, S. O'Brien, D. Cano-Ott, S. David, G. Tagliente, F. Gramegna, P. Pavlopoulos, Carlos Guerrero, Heinz Oberhummer, I. Savvidis, J. Andrzejewski, M. Embid-Segura, D. Karamanis, I. Dillmann, K. Wisshak, L. Ferrant, A. Pavlik, F. Kaeppeler, Manuel Lozano, C. Domingo-Pardo, C. Lampoudis, A. J. M. Plompen, R. Terlizzi, E. Kossionides, W.I. Furman, Rene Reifarth, F. Neves, V. Chepel, G. Vannini, P. M. Milazzo, R. C. Haight, Javier Praena, D. Villamarin, H. Álvarez, M. C. Vincente, P. Baumann, S. Lukic, C. Pretel, G. Rudolf, I. Lopes, L. Tavora, C. Paradela, J. L. Tain, Christoph A. Stephan, M. Krtička, F. Calviño, L. Audouin, J. Salgado, F. Gunsing, C. A. Papachristodoulou, K. Fujii, P. Rullhusen, R. Ferreira-Marques, T. Martinez, Cristian Massimi, J. M. Quesada, A. Poch, L. Tassan-Got, Michael Wiescher, S. Walter, James L. Cox, U. Abbondanno, Marco T. Pigni, M. Kerveno, G. Cortes, Ralf Plag, G. Aerts, L. Perrot, Roberto Capote, P.A. Assimakopoulos, C. T. Papadopoulos, C. Rubbia, B. Haas, Isabel S. Gonçalves, S. Marrone, W. Dridi, A. Lindote, F. Alvarez-Velarde, Gerald Badurek, A. Herrera-Martinez, N. Patronis, Arnaud Ferrari, Alberto Mengoni, L. Sarchiapone, Matthias Heil, Y. Kadi, Marco Calviani, C. Eleftheriadis, Thomas Rauscher, D. Karadimos, E. González-Romero, P. E. Koehler, I. Duran, Masayuki Igashira, Universitat Politècnica de Catalunya. Departament de Física i Enginyeria Nuclear, and Universitat Politècnica de Catalunya. GREENER - Grup de recerca d'estudis energètics i de les radiacions
Subjects: Neutron cross sections, Nuclear transmutation, Física [Àrees temàtiques de la UPC], Chemistry, Nuclear engineering, Acceleradors de partícules, Nuclear Theory, Nuclear data, Radioactive waste, Particle accelerator, Actinide, Neutrons -- Seccions, Particle accelerators, law.invention, Calorimeter, Nuclear physics, Neutron capture, law, Nuclear Experiment
Abstract: Neutron capture cross sections of actinides are of great relevance for the Transmutation of Nuclear Waste in Accelerator Driven Systems (ADS) and Generation-IV reactors. The neutron capture cross sections of 237Np and 240Pu were measured at the n TOF facility with a Total Absorption Calorimeter. The data have been analyzed with the SAMMY code. The corresponding covariance matrices have been generated. The final cross sections are presented and compared to the previously existing ones.
Published: 2007
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56. The 234U neutron capture cross section measurement at the n TOF facility

Author: C. Lampoudis, U. Abbondanno, G. Aerts, H. Álvarez, F. Álvarez-Velarde, S. Andriamonje, J. Andrzejewski, P. Assimakopoulos, L. Audouin, G. Badurek, P. Baumann, F. Bečvář, E. Berthoumieux, F. Calviño, M. Calviani, D. Cano-Ott, R. Capote, C. Carrapiço, P. Cennini, V. Chepel, E. Chiaveri, N. Colonna, G. Cortes, A. Couture, J. Cox, M. Dahlfors, S. David, I. Dillmann, C. Domingo-Pardo, W. Dridi, I. Duran, C. Eleftheriadis, M. Embid-Segura, L. Ferrant, A. Ferrari, R. Ferreira-Marques, K. Fujii, W. Furman, I. Goncalves, E. González-Romero, F. Gramegna, C. Guerrero, F. Gunsing, B. Haas, R. Haight, M. Heil, A. Herrera-Martinez, M. Igashira, E. Jericha, F. Käppeler, Y. Kadi, D. Karadimos, D. Karamanis, M. Kerveno, P. Koehler, E. Kossionides, M. Krtička, H. Leeb, A. Lindote, I. Lopes, M. Lozano, S. Lukic, J. Marganiec, S. Marrone, T. Martínez, C. Massimi, P. Mastinu, A. Mengoni, P. M. Milazzo, C. Moreau, M. Mosconi, F. Neves, H. Oberhummer, S. O'Brien, J. Pancin, C. Papachristodoulou, C. Papadopoulos, C. Paradela, N. Patronis, A. Pavlik, P. Pavlopoulos, L. Perrot, M. T. Pigni, R. Plag, A. Plompen, A. Plukis, A. Poch, J. Praena, C. Pretel, J. Quesada, T. Rauscher, R. Reifarth, C. Rubbia, G. Rudolf, P. Rullhusen, J. Salgado, C. Santos, L. Sarchiapone, I. Savvidis, C. Stephan, G. Tagliente, J. L. Tain, L. Tassan-Got, L. Tavora, R. Terlizzi, G. Vannini, P. Vaz, A. Ventura, D. Villamarin, M. C. Vincente, V. Vlachoudis, R. Vlastou, F. Voss, S. Walter, M. Wiescher, K. Wisshak, Universitat Politècnica de Catalunya. Departament de Física i Enginyeria Nuclear, and Universitat Politècnica de Catalunya. GREENER - Grup de recerca d'estudis energètics i de les radiacions
Subjects: Physics, Large Hadron Collider, Neutron cross sections, Física [Àrees temàtiques de la UPC], Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Nuclear data, Calorimetry, Neutrons -- Seccions, Calorimeter, Nuclear physics, Neutron capture, R-matrices, Calorimetria, Neutron cross section, Neutron source, Spallation, Neutron, Física nuclear, Nuclear Experiment
Abstract: The neutron capture cross-section of 234U has been measured for energies from thermal up to the keV region in the neutron time-of-flight facility n TOF, based on a spallation source located at CERN. A 4π BaF2 array composed of 40 crystals, placed at a distance of 184.9 m from the neutron source, was employed as a total absorption calorimeter (TAC) for detection of the prompt γ-ray cascade from capture events in the sample. This text describes the experimental setup, all necessary steps followed during the data analysis procedure. Results are presented in the form of R-matrix resonance parameters from fits with the SAMMY code and compared to the evaluated data of ENDF in the relevant energy region, indicating the good performance of the n TOF facility and the TAC.
Published: 2007

57. Simultaneous measurement of the neutron capture and fission yields of 233-U

Author: E. Berthoumieux, U. Abbondanno, G. Aerts, H. Álvarez, F. Álvarez-Velarde, S. Andriamonje, J. Andrzejewski, P. Assimakopoulos, L. Audouin, G. Badurek, P. Baumann, F. Bečvář, F. Calviño, M. Calviani, D. Cano-Ott, R. Capote, C. Carrapiço, P. Cennini, V. Chepel, E. Chiaveri, N. Colonna, G. Cortes, A. Couture, J. Cox, M. Dahlfors, S. David, I. Dillmann, C. Domingo-Pardo, W. Dridi, I. Duran, C. Eleftheriadis, M. Embid-Segura, L. Ferrant, A. Ferrari, R. Ferreira-Marques, K. Fujii, W. Furman, I. Goncalves, E. González-Romero, F. Gramegna, C. Guerrero, F. Gunsing, B. Haas, R. Haight, M. Heil, A. Herrera-Martinez, M. Igashira, E. Jericha, F. Käppeler, Y. Kadi, D. Karadimos, D. Karamanis, M. Kerveno, P. Koehler, E. Kossionides, M. Krtička, C. Lampoudis, H. Leeb, A. Lindote, I. Lopes, M. Lozano, S. Lukic, J. Marganiec, S. Marrone, T. Martínez, C. Massimi, P. Mastinu, A. Mengoni, P. M. Milazzo, C. Moreau, M. Mosconi, F. Neves, H. Oberhummer, S. O'Brien, J. Pancin, C. Papachristodoulou, C. Papadopoulos, C. Paradela, N. Patronis, A. Pavlik, P. Pavlopoulos, L. Perrot, M. T. Pigni, R. Plag, A. Plompen, A. Plukis, A. Poch, J. Praena, C. Pretel, J. Quesada, T. Rauscher, R. Reifarth, C. Rubbia, G. Rudolf, P. Rullhusen, J. Salgado, C. Santos, L. Sarchiapone, I. Savvidis, C. Stephan, G. Tagliente, J. L. Tain, L. Tassan-Got, L. Tavora, R. Terlizzi, G. Vannini, P. Vaz, A. Ventura, D. Villamarin, M. C. Vincente, V. Vlachoudis, R. Vlastou, F. Voss, S. Walter, M. Wiescher, K. Wisshak, Universitat Politècnica de Catalunya. Departament de Física i Enginyeria Nuclear, and Universitat Politècnica de Catalunya. GREENER - Grup de recerca d'estudis energètics i de les radiacions
Subjects: Physics, Fission, Neutrons--Measurement, Nuclear Theory, Nuclear data, Fission product yield, Calorimetry, Calorimeter, Nuclear physics, Neutron capture, Calorimetria, Física::Astronomia i astrofísica [Àrees temàtiques de la UPC], Neutron cross section, Neutrons -- Mesurament, Neutron, Atomic physics, Absorption (electromagnetic radiation), Nuclear Experiment
Abstract: We have measured the neutron capture and fission cross section of 233U at the neutron time-of-flight facility n TOF at CERN in the energy range from 1 eV to 1 MeV with high accuracy by using a high performance 4π BaF2 Total Absorption Calorimeter (TAC) as a detection device. The method, based on the TAC energy response study, allowing to disentangle between γ’s originating from fission and capture will be presented as well as the first very preliminary results.
Published: 2007

58. Measurement of neutron induced fission of 235U, 233U and 245Cm with the FIC detector at the CERN n_TOF facility

Author: Marco Calviani, Dimitrios Karadimos, U. Abbondanno, G. Aerts, H. Álvarez, F. Álvarez-Velarde, S. Andriamonje, J. Andrzejewski, P. Assimakopoulos, L. Audouin, G. Badurek, P. Baumann, F. Bečvář, E. Berthoumieux, F. Calviño, D. Cano-Ott, R. Capote, C. Carrapiço, P. Cennini, V. Chepel, E. Chiaveri, N. Colonna, G. Cortes, A. Couture, J. Cox, M. Dahlfors, S. David, I. Dillmann, C. Domingo-Pardo, W. Dridi, I. Duran, C. Eleftheriadis, M. Embid-Segura, L. Ferrant, A. Ferrari, R. Ferreira-Marques, K. Fujii, W. Furman, I. Goncalves, E. González-Romero, F. Gramegna, C. Guerrero, F. Gunsing, B. Haas, R. Haight, M. Heil, A. Herrera-Martinez, M. Igashira, E. Jericha, F. Käppeler, Y. Kadi, D. Karamanis, M. Kerveno, P. Koehler, E. Kossionides, M. Krtička, C. Lampoudis, H. Leeb, A. Lindote, I. Lopes, M. Lozano, S. Lukic, J. Marganiec, S. Marrone, T. Martínez, C. Massimi, P. Mastinu, A. Mengoni, P. M. Milazzo, C. Moreau, M. Mosconi, F. Neves, H. Oberhummer, S. O'Brien, J. Pancin, C. Papachristodoulou, C. Papadopoulos, C. Paradela, N. Patronis, A. Pavlik, P. Pavlopoulos, L. Perrot, M. T. Pigni, R. Plag, A. Plompen, A. Plukis, A. Poch, J. Praena, C. Pretel, J. Quesada, T. Rauscher, R. Reifarth, C. Rubbia, G. Rudolf, P. Rullhusen, J. Salgado, C. Santos, L. Sarchiapone, I. Savvidis, C. Stephan, G. Tagliente, J. L. Tain, L. Tassan-Got, L. Tavora, R. Terlizzi, G. Vannini, P. Vaz, A. Ventura, D. Villamarin, M. C. Vincente, V. Vlachoudis, R. Vlastou, F. Voss, S. Walter, M. Wiescher, K. Wisshak, Universitat Politècnica de Catalunya. Departament de Física i Enginyeria Nuclear, and Universitat Politècnica de Catalunya. GREENER - Grup de recerca d'estudis energètics i de les radiacions
Subjects: Physics, Física [Àrees temàtiques de la UPC], Physics::Instrumentation and Detectors, Fission, Nuclear Theory, Nuclear data, Nuclear energy, Neutron radiation, Residus radioactius, Nuclear physics, Nuclear wastes, Neutron flux, Ionization chamber, Neutron cross section, Energia nuclear, Neutron, Spallation, Nuclear Experiment
Abstract: A series of measurements of neutron induced fission cross section of various TRU isotopes have been performed at the CERN n TOF spallation neutron facility, in the energy range from thermal to nearly 250 MeV. The experimental apparatus consists in a fast ionization chamber (FIC), used as a fission fragment detector with a high efficiency. Good discrimination between alphas and fission fragments can be obtained with a simple amplitude threshold. In order to allow the monitoring of the neutron beam and to extract the n TOF neutron flux, the well known cross section of the 235U(n,f) reaction, considered as a fission standard, has been used. Preliminary results for the cross section are shown for some selected isotopes such as 235U, 233U and 245Cm in the energy range from 0.050 eV to about 2MeV.
Published: 2007
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59. Improved lead and bismuth (n,γ) cross sections and their astrophysical impact

Author: G. Vannini, A. Pavlik, S. David, C. Domingo-Pardo, G. Tagliente, M. Kerveno, R. C. Haight, L. Audouin, J. Marganiec, I. Duran, S. Andriamonje, F. Gunsing, C. Papachristodoulou, P. Cennini, Michael Wiescher, L. Perrot, W.I. Furman, P. F. Mastinu, Marco Calviani, M. C. Vincente, A. Herrera-Martinez, N. Patronis, M. Dahlfors, Alberto Mengoni, F. Voss, Cristian Massimi, C. Santos, C. Eleftheriadis, Rene Reifarth, A. Lindote, F. Becvar, M. Igashira, M. Mosconi, G. Cortes, V. Chepel, H. Álvarez, M. Embid-Segura, Yacine Kadi, P. Pavlopoulos, J. L. Tain, J. M. Quesada, D. Villamarin, P. Vaz, C. Stephan, S. O'Brien, Marco T. Pigni, P. Baumann, Nicola Colonna, J. Cox, B. Haas, Manuel Lozano, C. T. Papadopoulos, A. J. M. Plompen, M. Krtička, F. Calviño, R. Terlizzi, Laurent Tassan-Got, G. Aerts, U. Abbondanno, Roberto Capote, Alberto Ventura, Aaron Couture, Ralf Plag, W. Dridi, G. Rudolf, I. Lopes, P.A. Assimakopoulos, T. Martinez, I. Goncalves, L. Tavora, C. Paradela, S. Lukic, L. Sarchiapone, F. Neves, C. Moreau, S. Marrone, Thomas Rauscher, E. Berthoumieux, L. Ferrant, D. Karadimos, P. Rullhusen, P. E. Koehler, R. Vlastou, E. Gonzalez-Romero, K. Wisshak, S. Walter, I. Savvidis, A. Plukis, Alfredo Ferrari, R. Ferreira-Marques, Carlos Guerrero, F. Alvarez-Velarde, Heinz Oberhummer, J. Pancin, Gerald Badurek, E. Chiaveri, D. Cano-Ott, H. Leeb, E. Jericha, F. Kaeppeler, C. Pretel, K. Fujii, C. Lampoudis, P. M. Milazzo, J. Andrzejewski, Carlo Rubbia, V. Vlachoudis, E. Kossionides, Javier Praena, Michael Heil, D. Karamanis, I. Dillmann, F. Gramegna, C. Carrapiço, J. Salgado, A. Poch, Universitat Politècnica de Catalunya. Departament de Física i Enginyeria Nuclear, and Universitat Politècnica de Catalunya. GREENER - Grup de recerca d'estudis energètics i de les radiacions
Subjects: Physics, Física [Àrees temàtiques de la UPC], Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Monte Carlo method, Nuclear data, chemistry.chemical_element, Residus radioactius, Neutron temperature, Bismuth, Nuclear physics, Neutron capture, chemistry, Radioactive wastes, Nucleosynthesis, Neutrons--Measurements, Neutrons -- Mesurament, r-process, Neutron, Nuclear Experiment
Abstract: A series of (n,γ) neutron capture measurements on the lead isotopes and bismuth have been carried out at the CERN n TOF installation in the neutron energy range from 1 eV up to 1MeV. At n TOF, contaminations due to scattered neutrons were reduced down to a negligible level by using improved γ-ray detectors with very low neutron sensitivity. The background level has been determined precisely from a complementary measurement. Other experimental effects related to the electronic threshold in the detectors and the angular distribution of the prompt γ-rays were investigated via Monte Carlo simulations and could be taken in account in the analysis of the capture data. With this set of measurements the energy differential (n,γ) cross sections of 204,206,207Pb and 209Bi have been determined with good accuracy. The information obtained in this work becomes of interest for constraining r-process calculations and in particular for the Th/U cosmochronometer.
Published: 2007
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60. Neutron resonance spectroscopy at n TOF at CERN

Author: F. Gunsing, U. Abbondanno, G. Aerts, H. Álvarez, F. Álvarez-Velarde, S. Andriamonje, J. Andrzejewski, P. Assimakopoulos, L. Audouin, G. Badurek, P. Baumann, F. Bečvář, E. Berthoumieux, F. Calviño, M. Calviani, D. Cano-Ott, R. Capote, C. Carrapiço, P. Cennini, V. Chepel, E. Chiaveri, N. Colonna, G. Cortes, A. Couture, J. Cox, M. Dahlfors, S. David, I. Dillmann, C. Domingo-Pardo, W. Dridi, I. Duran, C. Eleftheriadis, M. Embid-Segura, L. Ferrant, A. Ferrari, R. Ferreira-Marques, K. Fujii, W. Furman, I. Goncalves, E. González-Romero, F. Gramegna, C. Guerrero, B. Haas, R. Haight, M. Heil, A. Herrera-Martinez, M. Igashira, E. Jericha, F. Käppeler, Y. Kadi, D. Karadimos, D. Karamanis, M. Kerveno, P. Koehler, E. Kossionides, M. Krtička, C. Lampoudis, H. Leeb, A. Lindote, I. Lopes, M. Lozano, S. Lukic, J. Marganiec, S. Marrone, T. Martínez, C. Massimi, P. Mastinu, A. Mengoni, P. M. Milazzo, C. Moreau, M. Mosconi, F. Neves, H. Oberhummer, S. O'Brien, J. Pancin, C. Papachristodoulou, C. Papadopoulos, C. Paradela, N. Patronis, A. Pavlik, P. Pavlopoulos, L. Perrot, M. T. Pigni, R. Plag, A. Plompen, A. Plukis, A. Poch, J. Praena, C. Pretel, J. Quesada, T. Rauscher, R. Reifarth, C. Rubbia, G. Rudolf, P. Rullhusen, J. Salgado, C. Santos, L. Sarchiapone, I. Savvidis, C. Stephan, G. Tagliente, J. L. Tain, L. Tassan-Got, L. Tavora, R. Terlizzi, G. Vannini, P. Vaz, A. Ventura, D. Villamarin, M. C. Vincente, V. Vlachoudis, R. Vlastou, F. Voss, S. Walter, M. Wiescher, K. Wisshak, Universitat Politècnica de Catalunya. Departament de Física i Enginyeria Nuclear, and Universitat Politècnica de Catalunya. GREENER - Grup de recerca d'estudis energètics i de les radiacions
Subjects: Physics, Large Hadron Collider, Astrophysics::High Energy Astrophysical Phenomena, Neutron stimulated emission computed tomography, Nuclear Theory, Nuclear structure, Nuclear data, Neutron scattering, Neutrons -- Seccions, Nuclear physics, Física::Astronomia i astrofísica [Àrees temàtiques de la UPC], Physics::Accelerator Physics, Neutron, Neutron resonance, Atomic physics, Spectroscopy, Nuclear Experiment, Excitation
Abstract: Neutron resonance spectroscopy plays an important role in the investigation of neutron induced reaction cross sections and nuclear structure in the MeV excitation range. Neutron time-of-flight facilities are the most used installations to explore neutron resonances. In this paper we describe the basic features of neutron resonance spectroscopy together with recent results from the time-of-flight facility n TOF at CERN.
Published: 2007

61. Resonance capture cross section ofPb207

Author: M. Embid-Segura, E. Griesmayer, M. Kerveno, Manuel Lozano, Sara Bisterzo, P. Cennini, A. Herrera-Martinez, N. Patronis, S. Walter, P. M. Milazzo, G. Cortes, A. Pavlik, E. Jericha, B. Haas, G. Aerts, R. C. Haight, M. Mosconi, Alberto Mengoni, R. Gallino, C. Domingo-Pardo, S. David, G. Tagliente, C. Stephan, S. O'Brien, A. Goverdovski, F. Alvarez-Velarde, I. Goncalves, Michael Heil, M. Igashira, L. Audouin, R. Vlastou, Gerald Badurek, Roberto Capote, M. Oshima, P.A. Assimakopoulos, R. Terlizzi, Thomas Rauscher, I. Savvidis, R. Dolfini, J. Andrzejewski, F. Neves, Alfredo Ferrari, R. Ferreira-Marques, Rene Reifarth, C. Pretel, L. Tavora, Carlo Rubbia, G. Vannini, D. Karadimos, V. Vlachoudis, L. Perrot, J. Salgado, Michael Wiescher, E. Kossionides, H. Frais-Koelbl, P. Pavlopoulos, J. M. Quesada, A. Poch, P. Rullhusen, D. Villamarin, V. Konovalov, F. Käppeler, C. Lamboudis, J. L. Tain, V. Chepel, J. Pancin, V. Ketlerov, E. Gonzalez-Romero, C. Papachristodoulou, L. Sarchiapone, C. T. Papadopoulos, A. J. M. Plompen, K. Fujii, E. Berthoumieux, I. Duran, P. Baumann, E. Chiaveri, I. Dillman, D. Cano-Ott, W. Dridi, G. Rudolf, I. Lopes, M. C. Vincente, M. Rosetti, S. Marrone, C. Eleftheriadis, A. Plukis, Yacine Kadi, S. Isaev, U. Abbondanno, C. Moreau, P. E. Koehler, M. Dahlfors, P. Vaz, M. Krtička, Alberto Ventura, Aaron Couture, J. Marganiec, S. Andriamonje, P. F. Mastinu, L. Ferrant, L. Fitzpatrick, C. Carrapiço, J. Cox, Laurent Tassan-Got, D. Karamanis, F. Gramegna, W.I. Furman, A. Lindote, Carlos Guerrero, Heinz Oberhummer, Ralf Plag, F. Gunsing, F. Voss, F. Becvar, Nicola Colonna, K. Wisshak, H. Alvarez-Pol, H. Wendler, C. Paradela, F. Calviño, H. Leeb, and S. Lukic
Subjects: Physics, Nuclear and High Energy Physics, Astrophysics::High Energy Astrophysical Phenomena, 01 natural sciences, 7. Clean energy, Neutron temperature, Nuclear physics, Neutron capture, 13. Climate action, 0103 physical sciences, Neutron cross section, Radiative transfer, r-process, Neutron, Atomic physics, 010306 general physics, s-process, 010303 astronomy & astrophysics, Energy (signal processing)
Abstract: The radiative neutron capture cross section of {sup 207}Pb has been measured at the CERN neutron time of flight installation n{sub T}OF using the pulse height weighting technique in the resolved energy region. The measurement has been performed with an optimized setup of two C{sub 6}D{sub 6} scintillation detectors, which allowed us to reduce scattered neutron backgrounds down to a negligible level. Resonance parameters and radiative kernels have been determined for 16 resonances by means of an R-matrix analysis in the neutron energy range from 3 keV to 320 keV. Good agreement with previous measurements was found at low neutron energies, whereas substantial discrepancies appear beyond 45 keV. With the present results, we obtain an s-process contribution of 77{+-}8% to the solar abundance of {sup 207}Pb. This corresponds to an r-process component of 23{+-}8%, which is important for deriving the U/Th ages of metal poor halo stars.
Published: 2006
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62. The 139La(n,gamma) cross section: key for the onset of the s process

Author: R. TERLIZZI, U. ABBONDANNO, G. AERTS, H. ALVAREZ, F. ALVAREZ VELARDE, S. ANDRIAMONJE, J. ANDRZEJEWSKI, P. ASSIMAKOPOULOS, L. AUDOUIN, G. BADUREK, P. BUMAN, F. BECVAR, E. BERTOUMIEUX, M. CALVIANI, F. CALVINO, D. CANO OTT, R. CAPOTE, A. CARRILLO DE ALBORNOZ, P. CENNINI, VCHEPEL, E. CHIAVERI, N. COLONNA, G. CORTES, A. COUTURE, J. COX, M. DAHLFORS, S. DAVID, I. DILLMAN, R. DOLFINI, C. DOMINGO PARDO, W. DRIDI, I. DURAN, C. ELEFTHERIADIS, M. EMBID SEGURA, L. FERRANT, A. FERRARI, R. FERREIRA MARQUES, L. FITZPATRICK, H. FRAIS KOELBL, K. FUJII, W. FURMAN, R. GALLINO, I. GONCALVES, E. GONZALES ROMERO, A. GOVERDOVSKI, F. GRAMEGNA, E. GRIESMAYER, C. GUERRERO, F. GUNSING, B. HAAS, R. HAIGHT, M. HEIL, A. HERRERA MARTINEZ, M. IGASHIRA, S. ISAEV, E. JERICHA, Y. KADI, F. KAPPELER, D. KARAMANIS, D. KARADIMOS, M. KERVENO, V. KETLEROV, P. KOEHLER, V. KOLNOVALOV, E. KOSSIONIDES, M. KRTICKA, C. LAMBOUDIS, H. LEEB, A. LINDOTE, I. LOPES, M. LOZANO, S. LUKIC, J. MARGANIEC, L. MARQUES, S. MARRONE, P. MASTINU, A. MENGONI, P. M. MILAZZO, C. MOREAU, M. MOSCONI, F. NEVES, H. OBERHUMMER, S. O'BRIEN, J. PANCIN, C. PAPACHRISTODOULOU, C. PAPADOPOULOS, C. PARADELA, N. PATRONIS, A. PAVLIK, P. PAVLOPOULOS, L. PERROT, M. PIGNATARI, R. PLAG, A. PLOMPEN, A. PLUKIS, A. POCH, C. PRETEL, J. QUESADA, T. RAUSCHER, R. REIFARTH, M. ROSETTI, C. RUBBIA, G. RUDOLF, P. RULLHUSEN, J. SALGADO, L. SARCHIAPONE, I. SAVVIDIS, C. STEPHAN, G. TAGLIENTE, J. L. TAIN, L. TASSAN GOT, L. TAVORA, P. VAZ, A. VENTURA, D. VILLARMARIN, M. C. VINCENTE, V. VLACHOUDIS, R. VLASTOU, F. VOSS, S. WALTER, H. WENDLER, M. WIESCHER, K. WISSHAK, MASSIMI, CRISTIAN, VANNINI, GIANNI, R.TERLIZZI, U.ABBONDANNO, G.AERTS, H.ALVAREZ, F.ALVAREZ-VELARDE, S.ANDRIAMONJE, J.ANDRZEJEWSKI, P.ASSIMAKOPOULOS, L.AUDOUIN, G.BADUREK, P.BUMAN, F.BECVAR, E.BERTOUMIEUX, M.CALVIANI, F.CALVINO, D.CANO-OTT, R.CAPOTE, A.CARRILLO DE ALBORNOZ, P. CENNINI, VCHEPEL, E.CHIAVERI, N.COLONNA, G.CORTES, A.COUTURE, J.COX, M.DAHLFORS, S.DAVID, I.DILLMAN, R.DOLFINI, C.DOMINGO-PARDO, W.DRIDI, I.DURAN, C.ELEFTHERIADIS, M.EMBID-SEGURA, L. FERRANT, A.FERRARI, R.FERREIRA-MARQUES, L.FITZPATRICK, H. FRAIS-KOELBL, K.FUJII, W.FURMAN, R.GALLINO, I.GONCALVES, E.GONZALES-ROMERO, A.GOVERDOVSKI, F.GRAMEGNA, E.GRIESMAYER, C.GUERRERO, F.GUNSING, B.HAAS, R.HAIGHT, M.HEIL, A.HERRERA-MARTINEZ, M.IGASHIRA, S.ISAEV, E. JERICHA, Y.KADI, F.KAPPELER, D.KARAMANIS, D.KARADIMOS, M.KERVENO, V.KETLEROV, P.KOEHLER, V.KOLNOVALOV, E.KOSSIONIDES, M.KRTICKA, C.LAMBOUDIS, H.LEEB, A.LINDOTE, I.LOPES, M.LOZANO, S.LUKIC, J.MARGANIEC, L.MARQUES, S.MARRONE, C.MASSIMI, P.MASTINU, A.MENGONI, P.M.MILAZZO, C.MOREAU, M.MOSCONI, F.NEVES, H.OBERHUMMER, S.O'BRIEN, J.PANCIN, C.PAPACHRISTODOULOU, C. PAPADOPOULOS, C.PARADELA, N.PATRONIS, A.PAVLIK, P.PAVLOPOULOS, L.PERROT, M.PIGNATARI, R.PLAG, A.PLOMPEN, A.PLUKIS, A.POCH, C.PRETEL, J.QUESADA, T.RAUSCHER, R.REIFARTH, M.ROSETTI, C.RUBBIA, G.RUDOLF, P.RULLHUSEN, J.SALGADO, L.SARCHIAPONE, I.SAVVIDIS, C.STEPHAN, G.TAGLIENTE, J.L.TAIN, L.TASSAN-GOT, L.TAVORA, G.VANNINI, P.VAZ, A.VENTURA, D.VILLARMARIN, M.C.VINCENTE, V.VLACHOUDIS, R.VLASTOU, F.VOSS, S.WALTER, H.WENDLER, M.WIESCHER, and K.WISSHAK
Subjects: Nuclear Theory, Nuclear Physics - Experiment, Nuclear Experiment
Abstract: The nuclear resonance parameters and the capture cross section of the neutron magic isotope 139La has been measured n_TOF. The description of the experimental apparata is followed by the data analysis procedures. We extracted the resonance parameters, the main nuclear quantities such as the resonance integral, the average gamma widths for s- and p-waves, the nuclear level densities and the neutron strength functions. These results represent a signifcant improvement over previous data. The deduced Maxwellian-averaged capture cross sections are important for the interpretation of the most recent spectroscopic observations in low metallicity stars. The nuclear resonance parameters and the capture cross section of the neutron magic isotope 139La has been measured n_TOF. The description of the experimental apparata is followed by the data analysis procedures. We extracted the resonance parameters, the main nuclear quantities such as the resonance integral, the average gamma widths for s- and p-waves, the nuclear level densities and the neutron strength functions. These results represent a signifcant improvement over previous data. The deduced Maxwellian-averaged capture cross sections are important for the interpretation of the most recent spectroscopic observations in low metallicity stars.
Published: 2006

63. New measurement of neutron capture resonances inBi209

Author: S. David, A. Pavlik, G. Tagliente, C. Domingo-Pardo, M. Oshima, W.I. Furman, J. Andrzejewski, M. Rosetti, E. Gonzalez-Romero, Carlo Rubbia, A. Lindote, A. Plukis, A. J. M. Plompen, V. Vlachoudis, P. E. Koehler, V. Chepel, M. Dahlfors, P. Baumann, L. Perrot, D. Karamanis, G. Vannini, E. Kossionides, M. Krtička, M. C. Vincente, V. Konovalov, P. Vaz, L. Ferrant, F. Calviño, G. Rudolf, I. Lopes, A. Goverdovski, Alberto Ventura, Aaron Couture, L. Sarchiapone, P. Cennini, J. Salgado, F. Käppeler, L. Fitzpatrick, M. Embid-Segura, A. Poch, V. Ketlerov, Ralf Plag, C. Moreau, E. Jericha, G. Aerts, F. Gramegna, C. Papachristodoulou, Alfredo Ferrari, R. Ferreira-Marques, I. Duran, A. Herrera-Martinez, N. Patronis, R. Vlastou, J. Marganiec, Manuel Lozano, S. Andriamonje, F. Alvarez-Velarde, M. Mosconi, J. Pancin, E. Chiaveri, G. Cortes, H. Leeb, C. T. Papadopoulos, Carlos Guerrero, D. Cano-Ott, H. Frais-Koelbl, Heinz Oberhummer, R. C. Haight, S. Isaev, I. Goncalves, Alberto Mengoni, Thomas Rauscher, I. Dillman, P. F. Mastinu, C. Stephan, S. O'Brien, Roberto Capote, W. Dridi, P.A. Assimakopoulos, Gerald Badurek, R. Dolfini, U. Abbondanno, P. M. Milazzo, F. Gunsing, F. Neves, D. Karadimos, E. Griesmayer, M. Igashira, R. Terlizzi, C. Pretel, S. Marrone, L. Audouin, R. Gallino, L. Tavora, C. Paradela, J. Cox, Michael Heil, C. Lamboudis, J. L. Tain, E. Berthoumieux, K. Fujii, P. Rullhusen, Michael Wiescher, Laurent Tassan-Got, M. Kerveno, L. Marques, A. Carrillo de Albornoz, I. Savvidis, S. Lukic, S. Walter, C. Eleftheriadis, Yacine Kadi, D. Villamarin, K. Wisshak, H. Wendler, F. Voss, Nicola Colonna, H. Alvarez-Pol, Rene Reifarth, P. Pavlopoulos, J. M. Quesada, B. Haas, and F. Bečvář
Subjects: Physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, 7. Clean energy, 01 natural sciences, Nuclear physics, Neutron capture, 13. Climate action, Nucleosynthesis, 0103 physical sciences, Neutron cross section, r-process, Spallation, Neutron, Alpha decay, Nuclear Experiment, s-process, 010303 astronomy & astrophysics
Abstract: The neutron capture cross section of Bi-209 has been measured at the CERN n_TOF facility by employing the pulse-height-weighting technique. Improvements over previous measurements are mainly because of an optimized detection system, which led to a practically negligible neutron sensitivity. Additional experimental sources of systematic error, such as the electronic threshold in the detectors, summing of gamma-rays, internal electron conversion, and the isomeric state in bismuth, have been taken into account. gamma-Ray absorption effects inside the sample have been corrected by employing a nonpolynomial weighting function. Because Bi-209 is the last stable isotope in the reaction path of the stellar s-process, the Maxwellian averaged capture cross section is important for the recycling of the reaction flow by alpha decays. In the relevant stellar range of thermal energies between kT=5 and 8 keV our new capture rate is about 16 presently accepted value used for nucleosynthesis calculations. At this low temperature an important part of the heavy Pb-Bi isotopes are supposed to be synthesized by the s-process in the He shells of low mass, thermally pulsing asymptotic giant branch stars. With the improved set of cross sections we obtain an s-process fraction of 19 +/- 3 residual of 81 +/- 3 is also of relevance for the design of accelerator driven systems based on a liquid metal Pb/Bi spallation target.
Published: 2006
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64. Neutron capture cross section ofTh232measured at the n_TOF facility at CERN in the unresolved resonance region up to 1 MeV

Author: Roberto Capote, P.A. Assimakopoulos, R. Vlastou, E. Berthoumieux, J. Marganiec, S. Andriamonje, E. Chiaveri, P. F. Mastinu, F. Gramegna, L. Tavora, L. Sarchiapone, M. Oshima, J. Andrzejewski, P. Pavlopoulos, A. J. M. Plompen, G. Aerts, C. T. Papadopoulos, V. Chepel, M. C. Vincente, Christoph A. Stephan, Carlo Rubbia, M. Embid-Segura, V. Vlachoudis, G. Rudolf, I. Lopes, E. Kossionides, S. David, Manuel Lozano, P. Baumann, G. Vannini, A. Herrera-Martinez, N. Patronis, D. Villamarin, F. Käppeler, C. Pretel, S. Isaev, P. Rullhusen, Marco T. Pigni, J. Pancin, G. Taliente, James L. Cox, A. Carrillo de Albornoz, Alberto Mengoni, L. Ferrant, L. Fitzpatrick, E. Gonzalez-Romero, I. Duran, Corrie S. Moreau, S. Walter, A. Plukis, K. Wisshak, H. Frais-Koelbl, I. Savvidis, J. Salgado, I. Dillman, E. Jericha, P. Cennini, L. Marques, A. Poch, Masayuki Igashira, Michael Heil, M. Krtička, K. Fujii, M. Mosconi, V. Ketlerov, H. Wendler, P. E. Koehler, L. Perrot, S. O'Brien, Ralf Plag, F. Neves, P. M. Milazzo, F. Gunsing, R. Ferreira-Marques, Alfredo Ferrari, R. Terlizzi, Yacine Kadi, E. Griesmayer, A. Lindote, R. C. Haight, D. Karamanis, A. Goverdovski, F. Alvarez-Velarde, F. Calviño, H. Leeb, Gerald Badurek, R. Dolfini, M. Rosetti, L. Audouin, W.I. Furman, C. Eleftheriadis, D. Cano-Ott, Thomas Rauscher, D. Karadimos, C. A. Papachristodoulou, Michael Wiescher, Carlos Guerrero, U. Abbondanno, Heinz Oberhummer, V. Konovalov, C. Paradela, S. Lukic, F. Voss, F. Becvar, Nicola Colonna, Rene Reifarth, J. M. Quesada, L. Tassan-Got, B. Haas, W. Dridi, M. Dahlfors, P. Vaz, Isabel S. Gonçalves, Alberto Ventura, Aaron Couture, A. Pavlik, S. Marrone, C. Domingo-Pardo, M. Kerveno, H. Álvarez, C. Lamboudis, J. L. Tain, and G. Cortes
Subjects: Physics, Nuclear and High Energy Physics, Range (particle radiation), Large Hadron Collider, 010308 nuclear & particles physics, 7. Clean energy, 01 natural sciences, Resonance (particle physics), Nuclear physics, Cross section (physics), Neutron capture, 0103 physical sciences, Neutron cross section, Neutron, Atomic physics, Nuclear Experiment, 010306 general physics, Isotopes of thorium
Abstract: We have measured the neutron capture reaction yield of Th-232 at the neutron time-of-flight facility n_TOF at CERN in the energy range from 1 eV to 1 MeV. The average capture cross section has been extracted in the energy range from 4 keV up to 1 MeV with an overall accuracy better than 4 data. The average cross section has been expressed in terms of average resonance parameters using the partial waves l=0,1, and 2.
Published: 2006
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65. Measurement of theSm151(n,γ) cross section from 0.6 eV to 1 MeV via the neutron time-of-flight technique at the CERN n_TOF facility

Author: J.C. Soares, J. Andrzejewski, L. Ferrant, Carlo Rubbia, A. Herrera-Martinez, V. Vlachoudis, P. E. Koehler, S. Isaev, J. Salgado, A. Poch, U. Abbondanno, B. Haas, P. Cennini, I. Goncalves, V. Chepel, E. Gonzalez-Romero, Alberto Mengoni, A. Molina-Coballes, V. Konovalov, Thomas Rauscher, M. Kritĉka, Yacine Kadi, J. Cox, Laurent Tassan-Got, M. Embid-Segura, A. Plukis, I. Duran-Escribano, E. Griesmayer, M. Kerveno, P. Baumann, R. C. Haight, M. Mosconi, D. Karadimos, F. Voss, D. Cortina, Manuel Lozano, Rene Reifarth, José M. Martínez-Val, G. Vannini, A.J.P.L. Policarpo, F. Bečvář, S. David, C. Stephan, S. O'Brien, P. Pavlopoulos, J. M. Quesada, P. M. Milazzo, G. Tagliente, W. Rapp, A. Pavlik, José Manuel Perlado, G. Aerts, Heinz Oberhummer, Michael Wiescher, R. Terlizzi, A. J. M. Plompen, G. Rudolf, V. Ketlerov, Nicola Colonna, L. Perrot, Saed Dababneh, J. Marganiec, C. Domingo-Pardo, E. Berthomieux, W.I. Furman, H. Alvarez-Pol, Subramanian Raman, A. Goverdovski, F. Alvarez-Velarde, S. Andriamonje, G. Cortes, L. Tavora, C. Pretel, Marco T. Pigni, Gerald Badurek, P. F. Mastinu, R. Dolfini, S. Marrone, A. Lindote, R. Gallino, P. Rullhusen, Marco Pignatari, M. Vincente-Vincente, Michael Heil, M. Rosetti, Roberto Capote, C. Lamboudis, J. L. Tain, Ralf Plag, J. Benlliure, K. Fujii, C. Moreau, E. Jericha, F. Neves, F. Calviño, H. Leeb, H. Frais-Koelbl, T. Papaevangelou, J. Pancin, D. Villamarin-Fernandez, E. Chiaveri, C. Paradela, S. Lukic, K. Wisshak, D. Cano-Ott, H. Wendler, F. Gunsing, M. Dahlfors, P. Vaz, Alberto Ventura, Aaron Couture, Alfredo Ferrari, R. Ferreira-Marques, F. Gramegna, F. Käppeler, and M.I. Lopes
Subjects: Physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, Scintillator, 01 natural sciences, 7. Clean energy, Nuclear physics, 13. Climate action, Neutron flux, Nucleosynthesis, 0103 physical sciences, Neutron cross section, Nuclear astrophysics, Neutron, Spallation, Atomic physics, 010306 general physics, s-process
Abstract: The Sm151(n,γ) cross section was measured with the time-of-flight technique from 0.6 eV up to 1 MeV relative to the Au standard with an overall uncertainty of typically 6%. Neutrons were produced by spallation at the innovative n_TOF facility at CERN; the γ rays from capture events were detected with organic C6D6 scintillators. Experimental setup and data analysis procedures are described with emphasis on the corrections for detection efficiency, background subtraction, and neutron flux determination. At low energies, resonances could be resolved up to about 1 keV, yielding a resonance integral of 3575±210 b, an average s-wave resonance spacing of D0 =1.49±0.07 eV, and a neutron strength function of S0 =(3.87±0.33) ×10-4. Maxwellian-averaged capture cross sections are reported for thermal energies between 5 and 100 keV. These results are of relevance for nuclear structure studies, nuclear astrophysics, and nuclear technology. The new value of the Maxwellian-averaged cross section at kT=30 keV is 3.08±0.15 b, considerably larger than previous theoretical estimates, and provides better constraints for the thermodynamic conditions during the occurrence of the slow neutron capture process in low-mass stars during their asymptotic giant branch phase. © 2006 The American Physical Society.
Published: 2006
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66. Implications of $^{151}$Sm(n,$\gamma$) Cross Section at n_TOF

Author: S. Lukic, N. Colonna, C. T. Papadopoulos, K. Wisshak, C. Rubbia, Corrie S. Moreau, M. Embid-Segura, G. Aerts, Manuel Lozano, A. Plukis, M. Oshima, J. Andrzejewski, A. Carrillo de Albornoz, A. Ventura, Isabel S. Gonçalves, A. Pavlik, F. Voss, H. Wendler, C. Domingo-Pardo, J. Salgado, S. Marrone, A. Poch, P. Cennini, L. Sarchiapone, J. Marganiec, E. Kossionides, S. Andriamonje, I. Savvidis, M. Kerveno, S. Walter, M. Rosetti, C. Eleftheriadis, E. Chiaveri, Ralf Plag, B. Haas, P. F. Mastinu, V. Chepell, Vasilis Vlachoudis, E. Griesmayer, F. Gramegna, K. Fujii, A. Herrera-Martinez, M. Mosconi, V. Konovalov, F. Calviño, H. Leeb, Arnaud Ferrari, M. C. Vincente, A. Mengoni, S. O'Brien, F. Neves, Matthias Heil, J. Pancin, P. M. Milazzo, Leila Soares Marques, C. Stephan, F. Gunsing, R. Gallino, Carlos Guerrero, A. J. M. Plompen, M. Dahlfors, U. Abbondanno, V. Ketlerov, Heinz Oberhummer, Y. Kadi, R. Terlizzi, M. Krtička, W. Dridi, P. Vaz, F. Käppeler, S. David, P. Pavlopoulos, G. Tagliente, H. Frais‐Koelb, L. Tavora, S. Isaev, R. Ferreira-Marques, W.I. Furman, H. Álvarez, James L. Cox, Rene Reifarth, I. Duran, Aaron Couture, A. Goverdovski, F. Alvarez-Velarde, P. Rullhusen, C. Lamboudis, J. L. Tain, C. A. Papachristodoulou, C. Pretel, D. Cano-Ott, E. Jericha, Thomas Rauscher, Gerald Badurek, L. Ferrant, F. Bečvář, R. C. Haight, R. Dolfini, D. Karadimos, J. M. Quesada, L. Tassan-Got, R. Vlastou, C. Paradela, E. Berthoumieux, L. Fitzpatrick, L. Audouin, E. González-Romero, Michael Wiescher, D. Villamarin, A. Lindote, Masayuki Igashira, D. Karamanis, I. Dillmann, P. E. Koehler, N. Patronis, Isabel Lopes, L. Perrot, G. Rudolf, P. Baumann, G. Vannini, G. Cortes, Roberto Capote, P.A. Assimakopoulos, S.V. Harissopulos, P. Demetriou, E. Julin, Institut de Physique Nucléaire d'Orsay (IPNO), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Département Recherches Subatomiques (DRS-IPHC), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), European Organization for Nuclear Research (CERN), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and nTOF
Subjects: Physics, Mass number, 020206 networking & telecommunications, 02 engineering and technology, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 25.40.Lw, 27.70.+q, 29.30.-h, Nuclear physics, astronomy, Cross section (physics), Neutron capture, Nucleosynthesis, 0202 electrical engineering, electronic engineering, information engineering, Neutron cross section, nuclei with mass number 150 to 189, 020201 artificial intelligence & image processing, Neutron, samarium, Spectroscopy, s-process, time of flight spectroscopy, neutron radiative capture
Abstract: International audience; The accurate knowledge of the $^{151}$Sm(n,$\gamma$) cross section has important implications for the nuclear technologies as well as for fundamental studies. Due to its radioactivity, the only experimental data available on $^{151}$Sm were derived from a transmission measurement. Nowadays thanks to the innovative features of neutron time-of-flight facility (n_TOF), it was possible to measure $^{151}$Sm(n,$\gamma$) cross section in a wide energy range and with good accuracy. We present, here, the main experimental results together with the implications concerning the nuclear astrophysical part.
Published: 2006
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67. Measurement of the resonance capture cross section of 204,206Pb and termination of the s-process

Author: M. Rosetti, M. Embid-Segura, R. Vlastou, A. Pavlik, R. Gallino, E. Berthoumieux, E. Griesmayer, C. Domingo-Pardo, G. Vannini, Manuel Lozano, L. Tavora, F. Käppeler, D. Karamanis, I. Dillmann, N. Patronis, H. Álvarez, M. Oshima, D. Cano-Ott, J. Andrzejewski, C. Lamboudis, J. L. Tain, I. Savvidis, A. Goverdovski, Thomas Rauscher, Carlos Guerrero, U. Abbondanno, K. Fujii, M. Dahlfors, E. Jericha, F. Gramegna, F. Alvarez-Velarde, V. Chepel, G. Rudolf, Matthias Heil, C. Eleftheriadis, P. Vaz, J. Pancin, Heinz Oberhummer, I. Duran, N. Colonna, P. Baumann, D. Karadimos, P. Rullhusen, F. Bečvář, Aaron Couture, Isabel Lopes, P. Pavlopoulos, S. David, G. Tagliente, M. C. Vincente, E. González-Romero, Corrie S. Moreau, M. Kerveno, S. Walter, A. Herrera-Martinez, Gerald Badurek, R. C. Haight, V. Konovalov, Arnaud Ferrari, J. Marganiec, R. Dolfini, H. Leeb, C. Paradela, L. Audouin, V. Ketlerov, Ralf Plag, L. Perrot, E. Kossionides, G. Aerts, A. Ventura, Y. Kadi, G. Cortes, A. J. M. Plompen, Michael Wiescher, P. E. Koehler, J. Salgado, A. Poch, A. Carrillo de Albornoz, L. Ferrant, H. Frais-Koelbl, S. Isaev, A. Plukis, P. Cennini, Masayuki Igashira, L. Fitzpatrick, K. Wisshak, W.I. Furman, James L. Cox, Alberto Mengoni, Rene Reifarth, D. Villamarin, C. Pretel, C. T. Papadopoulos, H. Wendler, F. Voss, M. Krtička, F. Calviño, Roberto Capote, M. Mosconi, C. Stephan, F. Gunsing, F. Neves, P.A. Assimakopoulos, P. M. Milazzo, J. M. Quesada, L. Marques, C. Rubbia, L. Sarchiapone, S. O'Brien, C. A. Papachristodoulou, L. Tassan-Got, Isabel S. Gonçalves, R. Ferreira-Marques, S. Marrone, R. Terlizzi, Vasilis Vlachoudis, B. Haas, S. Andriamonje, A. Lindote, E. Chiaveri, P. F. Mastinu, S. Lukic, and W. Dridi
Subjects: Nuclear physics, Physics, Neutron capture, Time of flight, Cross section (physics), Stellar nucleosynthesis, Nucleosynthesis, Nuclear cross section, Neutron, s-process
Abstract: The neutron capture cross sections of 204Pb and 206Pb have been measured at the CERN n_TOF installation using the time of flight method with the pulse height weighting technique. In a preliminary analysis of 204Pb we have determined by first time the capture cross sections for two strong s‐wave resonances below 2.5 keV, which seem to enhance the Maxwellian Averaged Cross Section at kT = 5 keV by about a factor of two with respect to the value assumed so far. In 206Pb we have determined capture cross sections for a large number (97) of resonances, which were not reported in the two previous capture measurements. We discuss preliminary implications of the new cross sections in the stellar nucleosynthesis of the Pb isotopes.
Published: 2006
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68. Neutron cross section measurements at n_TOF for ADS related estudies

Author: S. Walter, L. Ferrant, M Embid Segura, L itzpatrick, E. Jericha, A. J. M. Plompen, Ralf Plag, I. Duran, G. Rudolf, I. Lopes, D. Villamarin, W.I. Furman, James L. Cox, M. C. Vincente, Masayuki Igashira, A. Ventura, V. Chepel, C. A. Papachristodoulou, J. Salgado, S. Lukic, A. Poch, F. Neves, P. M. Milazzo, Christoph A. Stephan, A. Herrera-Martinez, N. Patronis, Arnaud Ferrari, R. C. Haight, V. Ketlerov, Alberto Mengoni, G. Vannini, C. Paradela, M Krti ka, Carlos Guerrero, B. Haas, L. Tavora, Heinz Oberhummer, S. Isaev, F. Voss, L. Audouin, M. Oshima, A. Carrillo de Albornoz, J. Andrzejewski, F. Gunsing, U. Abbondanno, Manuel Lozano, Nicola Colonna, Corrie S. Moreau, F Be vá, H. Álvarez, Cristian Massimi, Vasilis Vlachoudis, C. Pretel, M. Dahlfors, P. Pavlopoulos, C. Lamboudis, J. L. Tain, F. Gramegna, I. Savvidis, P. Vaz, H Frais-Kölbl, W. Dridi, N. Bustreo, G. Cortes, E. Griesmayer, P. Rullhusen, Rene Reifarth, L. Perrot, D. Cano-Ott, Aaron Couture, K. Wisshak, M Wiescherand, S. O`Brien, V. Konovalov, P. E. Koehler, Thomas Rauscher, P aumann, S. David, J. M. Quesada, C. T. Papadopoulos, L. Tassan-Got, J. Pancin, Roberto Capote, P.A. Assimakopoulos, C. Rubbia, D. Karadimos, G. Tagliente, Isabel S. Gonçalves, S. Marrone, A. Lindote, R. Vlastou, E. Berthoumieux, M. Kerveno, A. Pavlik, C. Domingo-Pardo, E. González-Romero, H. Wendler, A. Goverdovski, F. Alvarez-Velarde, Gerald Badurek, R. Dolfini, P. Cennini, K. Fujii, M. Rosetti, H. Leeb, M. Mosconi, R. Terlizzi, L. Marques, L. Sarchiapone, Matthias Heil, Y. Kadi, F. Käppeler, E. Kossionides, G. Aerts, R. Gallino, J. Marganiec, S. Andriamonje, E. Chiaveri, P. F. Mastinu, D. Karamanis, I. Dillmann, A. Plukis, F. Calviño, R. Ferreira-Marques, C. Eleftheriadis, Universitat Politècnica de Catalunya. Departament de Física i Enginyeria Nuclear, and Universitat Politècnica de Catalunya. GREENER - Grup de recerca d'estudis energètics i de les radiacions
Subjects: History, Astrofísica nuclear, Neutron cross sections, Nuclear transmutation, Nuclear engineering, Nuclear Theory, Nuclear physics, Neutrons -- Seccions, Education, Radiació ionitzant -- Mesures de seguretat, Radioactive wastes, Neutron cross section, Nuclear astrophysics, Neutron, Nuclear Experiment, Physics, Large Hadron Collider, Física [Àrees temàtiques de la UPC], Time-of-flight mass spectrometry, Radioactive waste, Neutron radiation, Waste disposal, Residus radioactius, Computer Science Applications, Shielding (Radiation), Physics::Accelerator Physics, Física nuclear, Nucleon
Abstract: A neutron Time-of-Flight facility (n_TOF) is available at CERN since 2001. The innovative features of the neutron beam, in particular the high instantaneous flux, the wide energy range, the high resolution and the low background, make this facility unique for measurements of neutron induced reactions relevant to the field of Emerging Nuclear Technologies, as well as to Nuclear Astrophysics and Fundamental Nuclear Physics. The scientific motivations that have led to the construction of this new facility are here presented. The main characteristics of the n_TOF neutron beam are described, together with the features of the experimental apparata used for cross-section measurements. The main results of the first measurement campaigns are presented. Preliminary results of capture cross-section measurements of minor actinides, important to ADS project for nuclear waste transmutation, are finally discussed.
Published: 2006

69. Measurement of 139La(n,γ) Cross Section

Author: C. T. Papadopoulos, Matthias Heil, A. Goverdovski, J. Pancin, D. Karamanis, I. Dillmann, J. Salgado, F. Alvarez-Velarde, V. Chepel, G. Rudolf, C. Rubbia, Isabel S. Gonçalves, S. Marrone, M. C. Vincente, M. Kerveno, A. Herrera-Martinez, N. Patronis, A. Poch, F. Calviño, H. Leeb, Rene Reifarth, Gerald Badurek, R. Dolfini, G. Cortes, H. Álvarez, C. Lamboudis, J. L. Tain, Arnaud Ferrari, Y. Kadi, M. Embid-Segura, P. Pavlopoulos, C. Stephan, F. Gunsing, P. Baumann, H. Frais-Koelbl, P. Cennini, M. Dahlfors, L. Marques, J. M. Quesada, P. Vaz, S. Isaev, L. Tassan-Got, R. Gallino, Manuel Lozano, J. Marganiec, Roberto Capote, P.A. Assimakopoulos, Corrie S. Moreau, I. Duran, Aaron Couture, M. Krtička, K. Wisshak, S. David, M. Mosconi, A. Lindote, M. Rosetti, I. Savvidis, L. Ferrant, G. Tagliente, E. Kossionides, C. Eleftheriadis, G. Vannini, F. Käppeler, B. Haas, H. Wendler, A. Pavlik, L. Fitzpatrick, S. O'Brien, M. Oshima, A. J. M. Plompen, R. Ferreira-Marques, C. Domingo-Pardo, L. Sarchiapone, R. Vlastou, E. Berthoumieux, R. C. Haight, D. Villamarin, J. Andrzejewski, R. Terlizzi, Isabel Lopes, C. Paradela, James L. Cox, S. Andriamonje, L. Perrot, L. Audouin, A. Mengoni, E. Chiaveri, P. E. Koehler, P. F. Mastinu, G. Aerts, Michael Wiescher, V. Ketlerov, C. Pretel, L. Tavora, N. Colonna, E. Griesmayer, A. Plukis, P. Rullhusen, Thomas Rauscher, F. Voss, Masayuki Igashira, K. Fujii, D. Cano-Ott, V. Konovalov, D. Karadimos, E. González-Romero, W. Dridi, Vasilis Vlachoudis, A. Ventura, F. Bečvář, S. Lukic, F. Gramegna, A. Carrillo de Albornoz, E. Jericha, W.I. Furman, F. Neves, P. M. Milazzo, C. A. Papachristodoulou, Carlos Guerrero, U. Abbondanno, Heinz Oberhummer, S. Walter, and Ralf Plag
Subjects: Physics, Nuclear physics, Neutron capture, Large Hadron Collider, Neutron cross section, Resonance, Neutron, Average level, s-process, R-matrix
Abstract: We measured the neutron capture cross section of 139La relative to 197Au in the energy range of 0.6 eV to 9 keV at n_TOF, the neutron time‐of‐flight facility at CERN. After a description of the experimental apparatus, we discuss data analysis procedures. The data were fitted using R‐matrix formalism to extract resonance parameters which, in turn, were used to calculate average level spacings D0 = 268 ± 22 eV and D1 < 250 eV, and neutron strength functions S0 = (0.79 ± 0.03)×10−4 and S1 = (0.73 ± 0.05)×10−4 for s‐ and p‐wave resonances. The data also were used to determine Maxwellian‐averaged neutron capture cross sections which, in turn, were used to calculate the 139La abundance synthesized in a stellar model of the main component of the s process.
Published: 2006
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70. NEUTRON CAPTURE CROSS SECTION OF 232Th AT THE n_TOF FACILITY AT CERN IN THE UNRESOLVED RESONANCE REGION UP TO 1 MeV

Author: G. Aerts, U. Abbondanno, H. Alvarez, F. Alvarez Velarde, S. Andriamonje, J. Andrzejewski, P. Assimakopoulos, L. Audouin, G. Badurek, P. Baumann, F. Becvar, E. Berthomieux, F. Calvino, D. Cano Ott, R. Capote, A. Carrillo de Albornoz, P. Cennini, V. Chepel, E. Chiaveri, N. Colonna, G. Cortes, A. Couture, J. Cox, M. Dahlfors, S. David, I. Dilmann, R. Dolfini, C. Domingo Pardo, W. Dridi, I. Duran, C. Eleftheriadis, M. Embid Segura, L. Ferrant, A. Ferrari, R. Ferreira Marques, L. Fritzpatrick, H. Frais Koelbl, K. Fujii, W. Furman, I. Goncalves, E. Gonzalez Romero, A. Goverdovski, F. Gramegna, E. Griesmayer, C. Guerrero, F. Gunsing, B. Haas, R. Haight, M. Heil, A. Herrera Martinez, M. Igashira, S. Isaev, E. Jericha, F. Kappeler, Y. Kadi, D. Karadimos, D. Karamanis, M. Kerveno, V. Ketlerov, P. E. Koehler, V. Konovalov, E. Kossionides, M. Krticka, C. Lamboudis, H. Leeb, A. Lindote, I. Lopes, M. Lozano, S. Lukic, J. Marganiec, L. Marques, S. Marrone, P. Mastinu, A. Mengoni, P. M. Milazzo, C. Moreau, M. Mosconi, F. Neves, H. Oberhummer, S. O'Brien, M. Oshima, J. Pancin, C. Papachristodoulou, C. Papadopoulos, C. Paradela, N. Patronis, A. Pavlik, P. Pavlopoulos, L. Perrot, M. T. Pigni, R. Plag, A. Plompen, A. Plukis, A. Poch, C. Pretel, J. Quesada, T. Rauscher, R. Reifarth, M. Rosetti, C. Rubbia, G. Rudolf, P. Rullhusen, J. Salgado, L. Sarchiapone, I. Savvidis, C. Stephan, G. Tagliente, J. L. Tain, L. Tassan Got, L. Tavora, R. Terlizzi, P. Vaz, A. Ventura, D. Villamarin, M. Vincente, V. Vlachoudis, R. Vlastou, F. Voss, S. Walter, H. Wendler, M. Wiescher, K. Wisshak, VANNINI, GIANNI, G.Aert, U.Abbondanno, H.Alvarez, F.Alvarez-Velarde, S.Andriamonje, J.Andrzejewski, P.Assimakopoulo, L.Audouin, G.Badurek, P.Baumann, F.Becvar, E. Berthomieux, F. Calvino, D.Cano-Ott, R.Capote, A.Carrillo de Albornoz, P.Cennini, V.Chepel, E.Chiaveri, N.Colonna, G.Corte, A.Couture, J.Cox, M.Dahlfor, S.David, I.Dilmann, R.Dolfini, C.Domingo-Pardo, W.Dridi, I.Duran, C.Eleftheriadi, M.Embid-Segura, L.Ferrant, A.Ferrari, R.Ferreira-Marque, L.Fritzpatrick, H.Frais-Koelbl, K.Fujii, W.Furman, I.Goncalve, E.Gonzalez-Romero, A.Goverdovski, F.Gramegna, E.Griesmayer, C.Guerrero, F.Gunsing, B.Haa, R.Haight, M.Heil, A.Herrera-Martinez, M.Igashira, S.Isaev, E.Jericha, F.Kappeler, Y.Kadi, D.Karadimo, D.Karamani, M.Kerveno, V.Ketlerov, P.E.Koehler, V.Konovalov, E.Kossionide, M.Krticka, C.Lamboudi, H.Leeb, A.Lindote, I.Lope, M.Lozano, S.Lukic, J.Marganiec, L.Marque, S.Marrone, P.Mastinu, A.Mengoni, P.M.Milazzo, C.Moreau, M.Mosconi, F.Neve, H.Oberhummer, S.O'Brien, M.Oshima, J.Pancin, C.Papachristodoulou, C.Papadopoulo, C.Paradela, N.Patroni, A.Pavlik, P.Pavlopoulo, L.Perrot, M.T.Pigni, R.Plag, A.Plompen, A.Pluki, A. Poch, C.Pretel, J.Quesada, T.Rauscher, R.Reifarth, M.Rosetti, C.Rubbia, G.Rudolf, P.Rullhusen, J.Salgado, L.Sarchiapone, I.Savvidi, C.Stephan, G.Tagliente, J.L.Tain, L.Tassan-Got, L.Tavora, R.Terlizzi, G.Vannini, P.Vaz, A.Ventura, D.Villamarin, M.Vincente, V.Vlachoudi, R.Vlastou, F.Vo, S.Walter, H.Wendler, and M.Wiescher and K. Wisshak
Published: 2006

71. Neutron Capture Cross Section Measurements at n_TOF of 237Np, 240Pu and 243Am for the Transmutation of Nuclear Waste

Author: D. Karamanis, N. Patronis, M. Krtička, F. Calviño, V. Ketlerov, G. Cortes, C. Eleftheriadis, Matthias Heil, J. Pancin, R. Ferreira-Marques, T. Martinez, R. Gallino, A. J. M. Plompen, G. Aerts, Rene Reifarth, P. Cennini, E. Kossionides, Masayuki Igashira, Y. Kadi, J. Salgado, A. Pavlik, N. Colonna, A. Poch, C. Domingo-Pardo, H. Frais-Koelbl, J. M. Quesada, L. Tassan-Got, Roberto Capote, P.A. Assimakopoulos, M. Mosconi, V. Chepel, G. Rudolf, H. Leeb, M. Rosetti, James L. Cox, M. Oshima, P. Pavlopoulos, B. Haas, S. O'Brien, R. C. Haight, J. Andrzejewski, A. Plukis, P. Baumann, C. Paradela, L. Audouin, R. Terlizzi, L. Sarchiapone, D. Cano-Ott, H. Álvarez, K. Wisshak, Isabel Lopes, G. Vannini, S. Andriamonje, L. Tavora, I. Duran, C. Lamboudis, J. L. Tain, Michael Wiescher, I. Dillman, Thomas Rauscher, W. Dridi, K. Fujii, V. Konovalov, L. Ferrant, S. David, A. Lindote, G. Tagliente, D. Karadimos, E. Chiaveri, P. F. Mastinu, M. Dahlfors, P. Rullhusen, P. Vaz, Carlos Guerrero, L. Fitzpatrick, L. Marques, U. Abbondanno, H. Wendler, E. González-Romero, M. Kerveno, Aaron Couture, J. Marganiec, C. Stephan, F. Gunsing, Heinz Oberhummer, D. Villamarin, Corrie S. Moreau, F. Käppeler, P. E. Koehler, L. Perrot, F. Bečvář, C. Pretel, Alberto Mengoni, C. T. Papadopoulos, W.I. Furman, A. Carrillo de Albornoz, M. Embid-Segura, C. Rubbia, Isabel S. Gonçalves, S. Marrone, A. Goverdovski, F. Alvarez-Velarde, C. A. Papachristodoulou, E. Griesmayer, Gerald Badurek, Manuel Lozano, S. Walter, E. Jericha, R. Dolfini, Ralf Plag, F. Neves, P. M. Milazzo, R. Vlastou, E. Berthoumieux, F. Gramegna, I. Savvidis, F. Voss, M. C. Vincente, Vasilis Vlachoudis, S. Lukic, A. Ventura, A. Herrera-Martinez, Arnaud Ferrari, S. Isaev, Universitat Politècnica de Catalunya. Departament de Física i Enginyeria Nuclear, and Universitat Politècnica de Catalunya. GREENER - Grup de recerca d'estudis energètics i de les radiacions
Subjects: Neutron capture, Nuclear transmutation, Chemistry, Nuclear engineering, Radioactive waste, Residus radioactius, Neutrons -- Seccions, Calorimeter, Nuclear wastes, Plutonium-240, Neutron flux, Física::Astronomia i astrofísica [Àrees temàtiques de la UPC], Neutron cross section, Física nuclear, Neutron
Abstract: Accurate and reliable neutron capture cross section data for actinides are necessary for the proper design, safety regulation and precise performance assessment of transmutation devices such as Fast Critical Reactors or Accelerator Driven Systems. In particular, the neutron capture cross sections of 237Np, 240Pu and 243Am play a key role in the design and optimization of strategies for the Transmutation of Nuclear Waste. The listed cross sections have been measured in 2004 at n_TOF [1] with a high accuracy due to a combination of features unique in the world: high instantaneous neutron fluence and excellent energy resolution of the n_TOF facility, innovative Data Acquisition System based on flash ADCs and the use of a high performance BaF2 Total Absorption Calorimeter as a detection device.
Published: 2006
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72. Measurement of the 151Sm(n,γ) cross section from 0.6 eV to 1 MeV via the neutron time-of-flight technique at the CERN n_TOF facility

Author: S. Marrone, U. Abbondanno, G. Aerts, F. Alvarez Velarde, H. Alvarez Pol, S. Andriamonje, J. Andrzejewski, G. Badurek, P. Baumann, F. Becvar, J. Benlliure, E. Berthomieux, F. Calvino, D. Cano Ott, R. Capote, P. Cennini, V. Chepel, E. Chiaveri, N. Colonna, G. Cortes, D. Cortina, A. Couture, J. Cox, S. Dababneh, M. Dahlfors, S. David, R. Dolfini, C. Domingo Pardo, I. Duran Escribano, M. Embid Segura, L. Ferrant, A. Ferrari, R. Ferreira Marques, H. Frais Koelbl, K. Fujii, W. I. Furman, R. Gallino, I. Goncalves, E. Gonzalez Romero, A. Goverdovski, F. Gramegna, E. Griesmayer, F. Gunsing, B. Haas, R. Haight, M. Heil, A. Herrera Martinez, S. Isaev, E. Jericha, F. Kappeler, Y. Kadi, D. Karadimos, M. Kerveno, V. Ketlerov, P. E. Koehler, V. Konovalov, M. Krticka, C. Lamboudis, H. Leeb, A. Lindote, M. I. Lopes, M. Lozano, S. Lukic, J. Marganiec, J. Martinez Val, P. F. Mastinu, A. Mengoni, P. M. Milazzo, A. Molina Coballes, C. Moreau, M. Mosconi, F. Neves, H. Oberhummer, S. O'Brien, J. Pancin, T. Papaevangelou, C. Paradela, A. Pavlik, P. Pavlopoulos, J. M. Perlado, L. Perrot, M. Pignatari, M. T. Pigni, R. Plag, A. Plompen, A. Plukis, A. Poch, A. Policarpo, C. Pretel, J. M. Quesada, S. Raman, W. Rapp, T. Rauscher, R. Reifarth, M. Rosetti, C. Rubbia, G. Rudolf, P. Rullhusen, J. Salgado, J. C. Soares, C. Stephan, G. Tagliente, J. L. Tain, L. Tassan Got, L. M. N. Tavora, R. Terlizzi, P. Vaz, A. Ventura, D. Villamarin Fernandez, M. Vincente Vincente, V. Vlachoudis, F. Voss, H. Wendler, M. Wiescher, K. Wisshak, VANNINI, GIANNI, S.Marrone, U.Abbondanno, G. Aert, F.Alvarez-Velarde, H.Alvarez-Pol, S.Andriamonje, J.Andrzejewski, G.Badurek, P.Baumann, F.Becvar, J. Benlliure, E. Berthomieux, F. Calvino, D.Cano-Ott, R.Capote, P.Cennini, V.Chepel, E.Chiaveri, N.Colonna, G.Corte, D.Cortina, A.Couture, J.Cox, S.Dababneh, M.Dahlfor, S.David, R.Dolfini, C.Domingo-Pardo, I.Duran-Escribano, M.Embid-Segura, L.Ferrant, A.Ferrari, R.Ferreira-Marque, H.Frais-Koelbl, K.Fujii, W.I.Furman, R.Gallino, I.Goncalve, E.Gonzalez-Romero, A.Goverdovski, F.Gramegna, E.Griesmayer, F.Gunsing, B.Haa, R.Haight, M.Heil, A.Herrera-Martinez, S.Isaev, E.Jericha, F.Kappeler, Y.Kadi, D.Karadimo, M.Kerveno, V.Ketlerov, P.E.Koehler, V.Konovalov, M.Krticka, C.Lamboudi, H.Leeb, A.Lindote, M.I.Lope, M.Lozano, S.Lukic, J.Marganiec, J.Martinez-Val, P.F.Mastinu, A.Mengoni, P.M.Milazzo, A.Molina-Coballe, C.Moreau, M.Mosconi, F.Neve, H.Oberhummer, S.O'Brien, J.Pancin, T.Papaevangelou, C.Paradela, A.Pavlik, P.Pavlopoulo, J.M.Perlado, L.Perrot, M.Pignatari, M.T.Pigni, R.Plag, A.Plompen, A.Pluki, A. Poch, A.Policarpo, C.Pretel, J.M.Quesada, S.Raman, W.Rapp, T.Rauscher, R.Reifarth, M.Rosetti, C.Rubbia, G.Rudolf, P.Rullhusen, J.Salgado, J.C.Soare, C.Stephan, G.Tagliente, J.L.Tain, L.Tassan-Got, L.M.N.Tavora, R.Terlizzi, G.Vannini, P.Vaz, A.Ventura, D.Villamarin-Fernandez, M.Vincente-Vincente, V.Vlachoudi, F.Vo, H.Wendler, and M.Wiescher and K. Wisshak
Published: 2006

73. Measurements of neutron capture cross-sections at n_TOF

Author: H. Leeb, A. J. M. Plompen, A. Pavlik, C. Domingo-Pardo, K. Wisshak, F. Gunsing, H. Wendler, M. Embid-Segura, Cristian Massimi, D. Villamarin, G. Rudolf, I. Lopes, A. Goverdovski, P. Cennini, G. Vannini, F. Alvarez-Velarde, J. Marganiec, V. Ketlerov, W.I. Furman, D. Cortina, Manuel Lozano, S. Andriamonje, J. Salgado, A. Poch, Gerald Badurek, E. Berthoumieux, I. Duran, A. Lindote, R. Dolfini, M. Mosconi, F. Voss, P. F. Mastinu, G. Aerts, P. M. Milazzo, M. Dahlfors, Marco Pignatari, C. Stephan, S. O'Brien, F. Bečvář, P. Vaz, J. Cox, Rene Reifarth, R. Terlizzi, T. Papaevangelou, Alberto Ventura, Laurent Tassan-Got, C. Pretel, E. Griesmayer, Aaron Couture, M. Krtička, F. Calviño, L. Tavora, José M. Martínez-Val, H. Frais-Koelbl, Nicola Colonna, C. Lamboudis, J. L. Tain, S. David, Saed Dababneh, P. Pavlopoulos, H. Alvarez-Pol, I. Goncalves, G. Tagliente, L. Perrot, J. M. Quesada, Yacine Kadi, P. Rullhusen, P. E. Koehler, J. Pancin, Thomas Rauscher, M. C. Vincente, A. Herrera-Martinez, José Manuel Perlado, E. Gonzalez-Romero, J. Andrzejewski, R. Gallino, E. Chiaveri, J.C. Soares, Heinz Oberhummer, D. Cano-Ott, D. Karadimos, G. Cortes, F. Gramegna, A. Plukis, R. C. Haight, Carlo Rubbia, A.J.P.L. Policarpo, C. Paradela, E. Jericha, B. Haas, V. Vlachoudis, Alberto Mengoni, S. Lukic, A. Molina-Coballes, Michael Heil, S. Isaev, L. Ferrant, U. Abbondanno, Ralf Plag, J. Benlliure, V. Chepel, V. Konovalov, Roberto Capote, Michael Wiescher, F. Neves, S. Marrone, P. Baumann, M. Kerveno, F. Käppeler, Giuseppe Lorusso, Alfredo Ferrari, R. Ferreira-Marques, C. Moreau, W. Rapp, Département d'Astrophysique, de physique des Particules, de physique Nucléaire et de l'Instrumentation Associée (DAPNIA), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Département Recherches Subatomiques (DRS-IPHC), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire d'Orsay (IPNO), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Pole Universitaire Leonard de Vinci, Pôle Universitaire Léonard de Vinci (PULV), A.J. Kreiner, O. Civitarese, C. Dorso, G. Garcia Bermudez, A.J. Pacheco, N.N. Scoccola, nTOF, and Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)
Subjects: 28.20.-v, 28.41.Rc, 28.41.Kw, 26.30.+k, neutron flux, Materials science, Large Hadron Collider, Nuclear transmutation, Astrophysics::High Energy Astrophysical Phenomena, nucleosynthesis, 020206 networking & telecommunications, 02 engineering and technology, radioactive waste disposal, radioactive waste processing, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 7. Clean energy, Nuclear physics, Neutron capture, Time of flight, Stellar nucleosynthesis, Nucleosynthesis, Neutron flux, 0202 electrical engineering, electronic engineering, information engineering, Physics::Accelerator Physics, 020201 artificial intelligence & image processing, Neutron, Nuclear Experiment
Abstract: International audience; Capture cross-sections on isotopes relevant to accelerator driven systems for energy production and nuclear waste transmutation, and to stellar nucleosynthesis have been studied at the innovative neutron time of flight facility n_TOF at CERN. The extremely high instantaneous neutron flux and the low background conditions in the experimental area make this facility unique for accurate measurements on low-mass or radioactive samples. The n_TOF facility is described, together with the features of the experimental apparata used. First results of the experimental campaign 2002-2004 are presented.
Published: 2005
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74. Measurement of $^{139}$La(n,$\gamma$) Cross Section at n_TOF

Author: M. Mosconi, S. O'Brien, F. Käppeler, R. Terlizzi, W.I. Furman, Carlos Guerrero, U. Abbondanno, Heinz Oberhummer, C. A. Papachristodoulou, L. Tavora, A. Herrera-Martinez, S. Walter, V. Chepel, Ralf Plag, M. Krtička, G. Vannini, P. Rullhusen, F. Gramegna, P. Vaz, I. Savvidis, G. Rudolf, Corrie S. Moreau, R. Ferreira-Marques, R. C. Haight, P. Baumann, M. Oshima, K. Fujii, J. Andrzejewski, C. Paradela, S. Andriamonje, L. Audouin, G. Aerts, S. David, E. Chiaveri, G. Tagliente, P. F. Mastinu, Michael Wiescher, C. Stephan, G. Cortes, Masayuki Igashira, E. Jericha, D. Cano-Ott, E. Griesmayer, F. Gunsing, N. Colonna, V. Konovalov, L. Perrot, Matthias Heil, J. Pancin, R. Vlastou, Roberto Capote, A. J. M. Plompen, P.A. Assimakopoulos, S. Lukic, A. Plukis, E. Berthoumieux, J. Salgado, A. Poch, A. Lindote, J. Marganiec, Y. Kadi, D. Karamanis, I. Dillmann, M. C. Vincente, H. Frais-Koelbl, F. Neves, N. Patronis, F. Voss, Isabel Lopes, I. Duran, P. M. Milazzo, James L. Cox, A. Goverdovski, Vasilis Vlachoudis, S. Isaev, L. Sarchiapone, F. Alvarez-Velarde, A. Carrillo de Albornoz, F. Bečvář, R. Gallino, A. Ferrari, M. Dalhfors, Gerald Badurek, K. Wisshak, R. Dolfini, C. Pretel, P. E. Koehler, H. Wendler, F. Calviño, H. Leeb, E. Kossionides, A. Ventura, P. Pavlopoulos, Rene Reifarth, L. Ferrant, H. Álvarez, Aaron Couture, L. Fitzpatrick, C. Lamboudis, J. L. Tain, A. Pavlik, D. Villamarin, C. Domingo-Pardo, J. M. Quesada, M. Embid-Segura, L. Tassan-Got, Manuel Lozano, C. T. Papadopoulos, C. Rubbia, B. Haas, Isabel S. Gonçalves, L. Marques, S. Marrone, M. Kerveno, W. Dridi, A. Mengoni, V. Ketlerov, C. Eleftheriadis, Thomas Rauscher, D. Karadimos, E. González-Romero, M. Rosetti, P. Cennini, Institut de Physique Nucléaire d'Orsay (IPNO), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Département Recherches Subatomiques (DRS-IPHC), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), S.V. Harissopulos, P. Demetriou, E. Julin, and nTOF
Subjects: nuclei with mass number 90 to 149, lanthanum, Chemistry, Radiative capture, Analytical chemistry, Resonance, 020206 networking & telecommunications, 02 engineering and technology, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Abundance of the chemical elements, Cross section (physics), Neutron capture, 25.40.Lw, 29.30.-h, 0202 electrical engineering, electronic engineering, information engineering, 020201 artificial intelligence & image processing, Neutron, Spectroscopy, s-process, time of flight spectroscopy, neutron radiative capture
Abstract: International audience; The capture cross section of the 139La has been measured relative to 197Au standard at n_TOF. We provide here a short description of the experimental apparatus and of the data analysis procedures. The extracted resonance parameters allow to calculate the fundamental nuclear quantities such as average spacing $\langleD\rangle$ 1=0 = 268 ± 22 eV, $\langleD\rangle$ 1=1 < 250 eV neutron strength functions S0 = (0.79 ± 0.03)×10-4, and S1 = (0.73 ± 0.05)×10-4 and the Maxwellian-averaged capture cross section (MACS). The MACS is particularly useful for the determination of the abundance synthesized by the main component of the s process
Published: 2005
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75. High-Resolution Study of 237Np Fission Cross Section from 5 eV to 1 MeV

Author: M. Embid-Segura, L. Perrot, V. Ketlerov, G. Vannini, Ralf Plag, J. Benlliure, D. Cortina, Manuel Lozano, A. Goverdovski, F. Alvarez-Velarde, R. Vlastou, E. Jericha, Gerald Badurek, K. Wisshak, R. Gallino, E. Berthoumieux, L. Audouin, F. Voss, Masayuki Igashira, F. Becvar, H. Álvarez, Matthias Heil, R. Dolfini, C. Lamboudis, J. L. Tain, M. Kerveno, J. Pancin, M. Krtička, C. T. Papadopoulos, A. Mengoni, A. Herrera-Martinez, N. Patronis, Rene Reifarth, C. Rubbia, R. Ferreira-Marques, P. Pavlopoulos, Isabel S. Gonçalves, L. Tavora, S. Marrone, G. Aerts, Arnaud Ferrari, Y. Kadi, Vasilis Vlachoudis, G. Cortes, V. Chepel, G. Rudolf, H. Wendler, R. C. Haight, Carlos Guerrero, U. Abbondanno, A. J. M. Plompen, H. Frais-Koelbl, J. M. Quesada, P. E. Koehler, M. C. Vincente, N. Colonna, L. Tassan-Got, C. Paradela, E. Kossionides, P. Rullhusen, S. David, P. Baumann, C. Stephan, Heinz Oberhummer, Michael Wiescher, L. Marques, L. Ferrant, J. Marganiec, Roberto Capote, P. Vaz, P.A. Assimakopoulos, C. Pretel, F. Gunsing, A. Carrillo de Albornoz, L. Fitzpatrick, M. Sedysheva, D. Karamanis, S. Isaev, Isabel Lopes, P. Cennini, L. Sarchiapone, W.I. Furman, James L. Cox, S. Lukic, A. Lindote, G. Tagliente, Aaron Couture, F. Käppeler, A. Plukis, A. Ventura, E. Griesmayer, M. Mosconi, C. A. Papachristodoulou, A. Pavlik, D. Villamarin, D. Kolokolov, S. Andriamonje, M. Oshima, J. Andrzejewski, C. Domingo-Pardo, F. Gramegna, S. O'Brien, B. Haas, Corrie S. Moreau, R. Terlizzi, A. Dorochenko, D. Cano-Ott, E. Chiaveri, P. F. Mastinu, I. Duran, V. Konovalov, J. Salgado, M. Rosetti, A. Poch, W. Dridi, F. Neves, F. Calviño, H. Leeb, P. M. Milazzo, K. Fujii, Thomas Rauscher, D. Karadimos, E. González-Romero, Institut de Physique Nucléaire d'Orsay (IPNO), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), R.C. Haight, M.B. Chadwick, T. Kawano, P. Talou, nTOF, and Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear
Subjects: Physics, Nuclear reaction, Isotopes of uranium, Nuclear transmutation, 010308 nuclear & particles physics, Fission, Nuclear Theory, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, 7. Clean energy, Neutron temperature, Nuclear physics, 0103 physical sciences, Uranium-235, Neutron cross section, 25.85.Ec, 27.90.+b, 25.40.Sc, Neutron, Nuclear Experiment, 010306 general physics
Abstract: PACS; International audience; A series of measurements of 237Np fission cross section have been performed at the CERN spallation neutron facility n_TOF which covers a wide energy range from 1 eV up to 250 MeV. A fast ionization chamber (FIC) was used as a fission fragment detector with registration efficiency of not less than 97 %. Particular attention was paid to correct the fission cross section with use of 235U standard. Total experimental uncertainties are determined to be at the level of 3%. Analysis of the experimental data in the restricted neutron energy from 5 eV up to 1 MeV showed a systematic deviation from evaluated data (ENDF/B-VI). This discrepancy amounts to up to a factor 3 for resolved resonances in the neutron energy range of 5 eV - 2 KeV, and is in good agreement with some previous experiments. A similar disagreement at the level of 6-7% was found for higher energies around the threshold (En = 300 keV-1 MeV). This energy range is essential for the transmutation of neptunium in ADS or fast reactors. It is concluded that an updated evaluation of nuclear data for 237Np is required
Published: 2005
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76. Measurements at n_TOF of the neutron capture cross section of minor actinides relevant to the nuclear waste transmutation

Author: M. Oshima, J. Andrzejewski, M. Krtička, Alfredo Ferrari, F. Calviño, Carlo Rubbia, G. Aerts, V. Vlachoudis, Corrie S. Moreau, R. Ferreira-Marques, V. Chepel, G. Rudolf, S. Lukic, L. Tavora, K. Wisshak, A. Pavlik, C. Domingo-Pardo, V. Konovalov, J. Salgado, A. Poch, P. Baumann, P. Rullhusen, S. Andriamonje, G. Vannini, F. Voss, H. Wendler, Carlos Guerrero, E. Chiaveri, P. F. Mastinu, Isabel Lopes, A. J. M. Plompen, E. Jericha, A. Herrera-Martinez, N. Patronis, E. Griesmayer, Yacine Kadi, H. Leeb, R. C. Haight, N. Colonna, U. Abbondanno, Heinz Oberhummer, Alberto Mengoni, James L. Cox, R. Gallino, F. Gramegna, L. Perrot, C. Paradela, F. Bečvář, S. David, D. Karamanis, L. Audouin, T. Papaevangelou, G. Cortes, G. Tagliente, Ralf Plag, J. Benlliure, J. Pancin, A. Carillo de Albornoz, Michael Wiescher, Michael Heil, C. Stephan, F. Gunsing, Masayuki Igashira, D. Cano-Ott, F. Neves, P. M. Milazzo, A. Plukis, P. E. Koehler, Roberto Capote, H. Frais-Koelbl, W.I. Furman, P.A. Assimakopoulos, J. Marganiec, R. Vlastou, A. Goverdovski, I. Duran, Georgios Perdikakis, E. Kossionides, E. Berthoumieux, F. Alvarez-Velarde, M. C. Vincente, C. A. Papachristodoulou, L. Sarchiapone, Gerald Badurek, S. Isaev, R. Dolfini, P. Cennini, M. Mosconi, A. Lindote, S. O'Brien, R. Terlizzi, A. Ventura, P. Vaz, Aaron Couture, C. T. Papadopoulos, B. Haas, L. Ferrant, Isabel S. Gonçalves, S. Marrone, L. Fitzpatrick, H. Álvarez, C. Lamboudis, J. L. Tain, M. Embid-Segura, D. Villamarin, M. Kerveno, W. Dridi, D. Cortina, Manuel Lozano, Rene Reifarth, J. M. Quesada, L. Tassan-Got, P. Pavlopoulos, L. Marques, K. Fujii, M. Rosetti, C. Pretel, V. Ketlerov, Thomas Rauscher, D. Karadimos, E. González-Romero, F. Käppeler, Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear, European Commission 5th Framework Programme, Institut de Physique Nucléaire d'Orsay (IPNO), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and nTOF
Subjects: Materials science, Nuclear transmutation, 010308 nuclear & particles physics, Nuclear engineering, Radioactive waste, chemistry.chemical_element, Americium, 25.40.Lw, 28.20.-v, 28.41.Kw, 27.90.+b, 28.41.Ak, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, 7. Clean energy, Calorimeter, Plutonium, chemistry, Neutron flux, 0103 physical sciences, Neutron cross section, Neutron, 010306 general physics
Abstract: Accurate and reliable neutron-capture cross-section data for actinides are necessary for the proper design, safety regulation, and precise performance assessment of transmutation devices such as Fast Critical Reactors or Accelerator Driven Systems. In particular, the neutron-capture cross sections of 237Np, 240Pu, and 243Am play a key role in the design and optimization of a strategy for the Nuclear Waste Transmutation. The listed cross sections have been measured in 2004 at n_TOF with a high accuracy due to a combination of features unique in the world: high instantaneous neutron fluence and excellent energy resolution of the n_TOF facility, innovative Data Acquisition System based on flash ADCs, and the use of a high-performance BaF2 Total Absorption Calorimeter as a detection device. European Commission 5th Framework Programme FIKW-CT-2000-00107
Published: 2005
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77. Neutron Capture Cross Section Measurement ofSm151at the CERN Neutron Time of Flight Facility (n_TOF)

Author: I. Goncalves, C. Lamboudis, J. L. Tain, Thomas Rauscher, L. Tavora, M. Embid-Segura, D. Karadimos, Rene Reifarth, D. Cortina, Manuel Lozano, A.J.P.L. Policarpo, José M. Martínez-Val, F. Gramegna, P. Pavlopoulos, P. Rullhusen, J. Andrzejewski, M. Kerveno, F. Käppeler, M. Krtička, T. Papaevangelou, J. M. Quesada, Carlo Rubbia, A. Pavlik, José Manuel Perlado, L. Ferrant, Heinz Oberhummer, G. Cortes, C. Domingo-Pardo, V. Vlachoudis, Saed Dababneh, M. Rosetti, V. Konovalov, F. Voss, W.I. Furman, Alfredo Ferrari, R. Ferreira-Marques, Nicola Colonna, E. Gonzalez-Romero, S. Marrone, H. Alvarez-Pol, A. Plukis, A. Lindote, Subramanian Raman, J. Pancin, R. Gallino, J. Cox, C. Paradela, G. Aerts, V. Ketlerov, J. Marganiec, E. Griesmayer, P. M. Milazzo, E. Chiaveri, Laurent Tassan-Got, S. Lukic, S. Andriamonje, D. Cano-Ott, Michael Heil, P. F. Mastinu, Marco Pignatari, Roberto Capote, Ralf Plag, J. Benlliure, W. Rapp, H. Frais-Koelbl, M. Dahlfors, P. Vaz, Alberto Ventura, Aaron Couture, C. Pretel, F. Neves, E. Jericha, I. Duran, D. Villamarin, P. E. Koehler, E. Berthoumieux, A. Herrera-Martinez, R. C. Haight, Alberto Mengoni, A. Molina-Coballes, G. Vannini, F. Bečvář, L. Perrot, S. David, G. Tagliente, V. Chepel, J. Salgado, A. Poch, P. Baumann, Michael Wiescher, Yacine Kadi, C. Moreau, M. C. Vincente, J.C. Soares, S. Isaev, U. Abbondanno, F. Gunsing, A. J. M. Plompen, G. Rudolf, I. Lopes, P. Cennini, K. Wisshak, A. Goverdovski, F. Alvarez-Velarde, Gerald Badurek, R. Dolfini, M. Mosconi, C. Stephan, S. O'Brien, R. Terlizzi, H. Wendler, F. Calviño, H. Leeb, and B. Haas
Subjects: Physics, Luminosity (scattering theory), 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, General Physics and Astronomy, 01 natural sciences, 7. Clean energy, Nuclear physics, Neutron capture, Time of flight, Nucleosynthesis, 0103 physical sciences, Neutron cross section, Spallation, Neutron, Nuclear Experiment, 010306 general physics, s-process
Abstract: The Sm-151(n,gamma)Sm-152 cross section has been measured at the spallation neutron facility n_TOF at CERN in the energy range from 1 eV to 1 MeV. The new facility combines excellent resolution in neutron time-of-flight, low repetition rates, and an unsurpassed instantaneous luminosity, resulting in rather favorable signal/background ratios. The Sm-151 cross section is of importance for characterizing neutron capture nucleosynthesis in asymptotic giant branch stars. At a thermal energy of kT=30 keV the Maxwellian averaged cross section of this unstable isotope (t(1/2)=93 yr) was determined to be 3100+/-160 mb, significantly larger than theoretical predictions.
Published: 2004
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78. Measurement of the n-TOF beam profile with a micromegas detector

Author: J. Pancin, U. Abbondanno, G. Aerts, H. Alvarez, S. Andriamonje, A. Angelopoulos, P. Assimakopoulos, C. Bacri, G. Badurek, P. Baumann, F. Bečvář, H. Beer, J. Benlliure, B. Berthier, E. Berthoumieux, S. Boffi, C. Borcea, E. Boscolo-Marchi, N. Bustreo, F. Calvino, D. Cano-ott, R. Capote, P. Carlson, P. Cennini, V. Chepel, E. Chiaveri, N. Colonna, G. Cortes, D. Cortina, A. Couture, J. Cox, S. Dababneh, M. Dahlfors, S. David, A. Delbart, J. Derre, R. Dolfini, C. Domingo, I. Duran-Escribano, C. Eleftheriadis, M. Embid-Segura, L. Ferrant, A. Ferrari, L. Ferreira-Lourenco, R. Ferreiramarques, H. Frais-Koelbl, W. Furman, Y. Giomataris, I. Goncalves, E. Gonzalez-Romero, A. Goverdovski, F. Gramegna, E. Griesmayer, F. Gunsing, R. Haight, M. Heil, A. Herrera-Martinez, K. Ioannides, N. Janeva, F. Jeanneau, E. Jericha, F. Käppeler, Y. Kadi, D. Karamanis, A. Kelic, V. Ketlerov, G. Kitis, P. Koehler, V. Konovalov, E. Kossionides, V. Lacoste, H. Leeb, A. Lindote, I. Lopes, M. Lozano, S. Lukic, S. Markov, S. Marrone, J. Martinez-Val, P. Mastinu, A. Mengoni, P. Milazzo, E. Minguez, A. Molina-Coballes, C. Moreau, F. Neves, H. Oberhummer, S. O'brien, I. Papadopoulos, T. Papavengelou, C. Paradela, A. Pavlik, P. Pavlopoulos, A. Perez-Parra, J. Perlado, V. Peskov, L. Perrot, R. Plag, A. Plompen, A. Plukis, A. Poch, A. Policarpo, C. Pretel, J. Quesada, M. Radici, S. Raman, W. Rapp, R. Reifarth, F. Rejmund, M. Rosetti, C. Rubbia, G. Rudolf, P. Rullhusen, J. Salgado, E. Savvidis, C. Stephan, G. Tagliente, J. Tain, C. Tapia, L. Tassan-Got, L. Tavora, R. Terlizzi, M. Terrani, N. Tsangas, G. Vannini, P. Vaz, A. Ventura, D. Villamarin-Fernandez, M. Vincente-Vincente, V. Vlachoudis, R. Vlastou, F. Voss, H. Wendler, M. Wiescher, K. Wisshak, L. Zanini, J.Pancin, U.Abbondanno, G.Aert, H.Alvarez, S.Adriamonje, A.Angelopoulo, P.Assimakopoulo, C.Bacri, C.Badurek, P.Bauman, F.Becvar, H.Beer, J.Benlliure, B.Berthier, E.Berthoumieux, S.Boffi, C.Borcea, N.Bustreo, F.Calvino, D.Cano-Ott, R.Capote, P.Carlson, P.Cennini, V.Chepel, E.Chiaveri, N.Colonna, G.Corte, D.Cortina, A.Couture, J.Cox, S.Dababneh, M.Dahlfor, S.David, R.Dolfini, C.Domingo, I.Dura-Escribano, C.Eleftheriadi, M.Embid-Segura, L.Ferrant, A.Ferrari, L.Ferreira-Lourenco, R.Ferreira-Marque, H.Frais-Koelbl, W.Furman, Y.Giomatari, I.Goncalve, E.Gonzales-Romero, A.Goverdovski, F.Gramegna, E.Griiesmayer, F.GGunsing, R.Haight, M.Heil, A.Errera-Martinez, K.Ioannide, N.Janeva, E.Jericha, Y.Kadi, F.Kappeler, D.Karamani, A.Kelic, V.Ketlerov, G.Kiti, P.Koehler, V.Konovalov, E.Kossionide, V.Lacoste, H.Leeb, A.Lindote, I.Lope, M.Lozano, S.Lukic, S.Markov, S.Marrone, J.Martinez-Val, P.Mastinu, A.Mengoni, P.Milazzo, E.Minguez, C.Moreau, F.Neve, H.Oberhummer, S.O’Brien, C.Paradela, A.Pavlik, P.Pavlopoulo, A.Perez-Parra, J.Perlado, L.Perrot, V.Peskov, R.Plag, A.Plomplen, A.Pluki, A.Poch, A.policarpo, C.Pretel, J.Quesada, M.Radici, W.Rapp, R.Reifarth, F.Rejmund, M.Rosetti, C.Rubbia, G.Rudolf, P.Rullhusen, J.Salgado, E.Savvidi, C.Stephan, G.Tagliente, J.Tain, C.Tapia, L.Tassan-Got, L.Tavora, M.Terrani, N.Tsanga, G.Vannini, P.Vaz, A.Ventura, D.Villamarin-Fernandez, M.Vincente-Vincente, V.Vlachoudi, R.Vlastou, F.Vo, H.Wendler, M.Wiescher, K.Wisshak, and L.Zanini
Subjects: Elastic scattering, Physics, Nuclear and High Energy Physics, Argon, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Beam profile, Nuclear Theory, chemistry.chemical_element, MicroMegas detector, NUCLEAR PHYSICS, Neutron radiation, Nuclear physics, Neutron capture, chemistry, NEUTRON BEAMS, Neutron cross section, MICROMEGAS DETECTOR, Neutron detection, Neutron beam profiler, Neutron, Nuclear Experiment, Instrumentation, Micromegas
Abstract: A Micromegas detector was used in the neutron Time-Of-Flight (n_TOF) facility at CERN to evaluate the spatial distribution of the neutron beam as a function of its kinetic energy. This was achieved over a large range of neutron energies by using two complementary processes: at low energy by capture of a neutron via the 6Li(n,[alpha])t reaction, and at high energy by elastic scattering of neutrons on gas nuclei (argon+isobutane or helium+isobutane). Data are compared to Monte Carlo simulations and an analytic function fitting the beam profile has been calculated with a sufficient precision to use in neutron capture experiments at the n_TOF facility. http://www.sciencedirect.com/science/article/B6TJM-4BRSWVV-3/1/01dd54d28c7a57560574f1adfbd8a2f0
Published: 2004

79. Neutron capture cross section measurement of 151-Sm at the CERN neutron time of flight facility (n_TOF)

Author: U. Abbondanno, G. Aerts, H. Alvarez, S. Adriamonje, A. Angelopoulos, P. Assimakopoulos, C. Bacri, C. Badurek, P. Bauman, F. Becvar, H. Beer, J. Benlliure, B. Berthier, E. Berthoumieux, S. Boffi, C. Borcea, N. Bustreo, F. Calvino, D. Cano Ott, R. Capote, P. Carlson, P. Cennini, V. Chepel, E. Chiaveri, N. Colonna, G. Cortes, D. Cortina, A. Couture, J. Cox, S. Dababneh, M. Dahlfors, S. David, R. Dolfini, C. Domingo, I. Dura Escribano, C. Eleftheriadis, M. Embid Segura, L. Ferrant, A. Ferrari, L. Ferreira Lourenco, R. Ferreira Marques, H. Frais Koelbl, W. Furman, Y. Giomataris, I. Goncalves, E. Gonzales Romero, A. Goverdovski, F. Gramegna, E. Griiesmayer, F. GGunsing, R. Haight, M. Heil, A. Errera Martinez, K. Ioannides, N. Janeva, E. Jericha, Y. Kadi, F. Kappeler, D. Karamanis, A. Kelic, V. Ketlerov, G. Kitis, P. Koehler, V. Konovalov, E. Kossionides, V. Lacoste, H. Leeb, A. Lindote, I. Lopes, M. Lozano, S. Lukic, S. Markov, S. Marrone, J. Martinez Val, P. Mastinu, A. Mengoni, P. Milazzo, E. Minguez, C. Moreau, F. Neves, H. Oberhummer, S. O’Brien, J. Pancin, C. Paradela, A. Pavlik, P. Pavlopoulos, A. Perez Parra, J. Perlado, L. Perrot, V. Peskov, R. Plag, A. Plomplen, A. Plukis, A. Poch, A. policarpo, C. Pretel, J. Quesada, M. Radici, W. Rapp, R. Reifarth, F. Rejmund, M. Rosetti, C. Rubbia, G. Rudolf, P. Rullhusen, J. Salgado, E. Savvidis, C. Stephan, G. Tagliente, J. Tain, C. Tapia, L. Tassan Got, L. Tavora, M. Terrani, N. Tsangas, P. Vaz, A. Ventura, D. Villamarin Fernandez, M. Vincente Vincente, V. Vlachoudis, R. Vlastou, F. Voss, H. Wendler, M. Wiescher, K. Wisshak, L. Zanini, VANNINI, GIANNI, U.Abbondanno, G.Aert, H.Alvarez, S.Adriamonje, A.Angelopoulo, P.Assimakopoulo, C.Bacri, C.Badurek, P.Bauman, F.Becvar, H.Beer, J.Benlliure, B.Berthier, E.Berthoumieux, S.Boffi, C.Borcea, N.Bustreo, F.Calvino, D.Cano-Ott, R.Capote, P.Carlson, P.Cennini, V.Chepel, E.Chiaveri, N.Colonna, G.Corte, D.Cortina, A.Couture, J.Cox, S.Dababneh, M.Dahlfor, S.David, R.Dolfini, C.Domingo, I.Dura-Escribano, C.Eleftheriadi, M.Embid-Segura, L.Ferrant, A.Ferrari, L.Ferreira-Lourenco, R.Ferreira-Marque, H.Frais-Koelbl, W.Furman, Y.Giomatari, I.Goncalve, E.Gonzales-Romero, A.Goverdovski, F.Gramegna, E.Griiesmayer, F.GGunsing, R.Haight, M.Heil, A.Errera-Martinez, K.Ioannide, N.Janeva, E.Jericha, Y.Kadi, F.Kappeler, D.Karamani, A.Kelic, V.Ketlerov, G.Kiti, P.Koehler, V.Konovalov, E.Kossionide, V.Lacoste, H.Leeb, A.Lindote, I.Lope, M.Lozano, S.Lukic, S.Markov, S.Marrone, J.Martinez-Val, P.Mastinu, A.Mengoni, P.Milazzo, E.Minguez, C.Moreau, F.Neve, H.Oberhummer, S.O’Brien, J.Pancin, C.Paradela, A.Pavlik, P.Pavlopoulo, A.Perez-Parra, J.Perlado, L.Perrot, V.Peskov, R.Plag, A.Plomplen, A.Pluki, A.Poch, A.policarpo, C.Pretel, J.Quesada, M.Radici, W.Rapp, R.Reifarth, F.Rejmund, M.Rosetti, C.Rubbia, G.Rudolf, P.Rullhusen, J.Salgado, E.Savvidi, C.Stephan, G.Tagliente, J.Tain, C.Tapia, L.Tassan-Got, L.Tavora, M.Terrani, N.Tsanga, G.Vannini, P.Vaz, A.Ventura, D.Villamarin-Fernandez, M.Vincente-Vincente, V.Vlachoudi, R.Vlastou, F.Vo, H.Wendler, M.Wiescher, K.Wisshak, and L.Zanini
Published: 2004

80. IMPROVED ACCURACY (<font>N</font>, γ) MEASUREMENTS AT N_TOF

Author: J. Salgado, F. Gramegna, A. Poch, Rene Reifarth, A. Kelic, A. Pavlik, R. Vlastou, Gerald Badurek, R. Dolfini, E. Berthoumieux, M. Vincente-Vincente, Y. Giomataris, J. M. Quesada, L. Tassan-Got, A. Mengoni, I. Duran-Escribano, N. Colonna, E. Boscolo-Marchi, A. J. M. Plompen, V. Ketlerov, James L. Cox, F. Voss, W.I. Furman, Isabel Lopes, F. Neves, P. M. Milazzo, G. Cortes, D. Karamanis, C. Eleftheriadis, P. Cennini, E. Mínguez, F. Rejmund, A. Herrera-Martinez, H. Álvarez, J. L. Tain, A. Plukis, Marco Radici, Roberto Capote, Matthias Heil, J. Pancin, A. Angelopoulos, Arnaud Ferrari, E. Jericha, P.A. Assimakopoulos, Corrie S. Moreau, Vasilis Vlachoudis, C. Borcea, S. David, G. Tagliente, H. Leeb, C. Tapia, José M. Martínez-Val, S. Andriamonje, A. Molina-Coballes, A.J.P.L. Policarpo, L. Ferrant, E. González-Romero, L. Ferreira-Lourenco, L. Perrot, G. Vannini, S. O'Brien, D. Villamarin-Fernandez, U. Abbondanno, A. Lindote, B. Berthier, José Manuel Perlado, Heinz Oberhummer, G. Aerts, M. Rosetti, C. Stephan, F. Gunsing, R. Terlizzi, Y. Kadi, E. Griesmayer, S. Markov, E. Chiaveri, P. F. Mastinu, H. Frais-Koelbl, K. G. Ioannides, L. Tavora, N. Janeva, S. Lukic, F. Käppeler, V. Chepel, G. Rudolf, E. Savvidis, A. Perez-Parra, Ralf Plag, J. Benlliure, N. Bustreo, M. Terrani, P. Baumann, P. Rullhusen, P. E. Koehler, A. Ventura, Subramanian Raman, V. Konovalov, M. Embid-Segura, D. Cano-Ott, K. Wisshak, Per Carlson, P. Pavlopoulos, M. Dahlfors, P. Vaz, F. Bečvář, N. Tsangas, D. Cortina, Manuel Lozano, Aaron Couture, C.O. Bacri, H. Wendler, C. Domingo, E. Kossionides, V. Peskov, R. C. Haight, V. Lacoste, L. Zanini, F. Calviño, C. Paradela, H. Beer, C. Rubbia, Isabel S. Gonçalves, S. Marrone, Michael Wiescher, R. Ferreira-Marques, Saed Dababneh, C. Pretel, Sigfrido Boffi, George Kitis, W. Rapp, and A. Goverdovski
Published: 2003
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81. NEUTRON CAPTURE MEASUREMENTS AT THE CERN-NTOF FACILITY FOR ADS APPLICATIONS

Author: J. M. Quesada, M. Embid-Segura, G. Vannini, M. Rosetti, L. Tassan-Got, P. Cennini, J. Salgado, C. Pretel, K. G. Ioannides, D. Cortina, Manuel Lozano, A. Poch, S. O'Brien, C.O. Bacri, N. Bustreo, M. Dahlfors, B. Berthier, P. Vaz, C. Stephan, F. Gunsing, R. Terlizzi, V. Peskov, C. Eleftheriadis, E. Jericha, L. Ferrant, Ralf Plag, J. Benlliure, V. Konovalov, G. Cortes, D. Karamanis, W. Rapp, Aaron Couture, I. Duran-Escribano, A.J.P.L. Policarpo, Subramanian Raman, D. Cano-Ott, L. Tavora, E. González-Romero, A. Mengoni, V. Ketlerov, Roberto Capote, P. Rullhusen, A. Pavlik, F. Rejmund, P.A. Assimakopoulos, V. Lacoste, Sigfrido Boffi, S. David, Matthias Heil, L. Perrot, Marco Radici, Y. Giomataris, G. Tagliente, W.I. Furman, J. Pancin, A. Perez-Parra, E. Savvidis, E. Mínguez, A. Lindote, Y. Kadi, G. Aerts, M. Vincente-Vincente, M. Terrani, H. Frais-Koelbl, A. Goverdovski, P. E. Koehler, V. Chepel, F. Neves, P. M. Milazzo, G. Rudolf, F. Calviño, Gerald Badurek, H. Leeb, R. Dolfini, José M. Martínez-Val, P. Baumann, P. Pavlopoulos, D. Villamarin-Fernandez, Per Carlson, U. Abbondanno, George Kitis, Isabel Lopes, José Manuel Perlado, Heinz Oberhummer, K. Wisshak, F. Käppeler, A. Ventura, H. Wendler, F. Bečvář, A. J. M. Plompen, A. Angelopoulos, S. Andriamonje, E. Griesmayer, N. Tsangas, E. Kossionides, H. Álvarez, E. Chiaveri, P. F. Mastinu, James L. Cox, J. L. Tain, R. Vlastou, E. Berthoumieux, L. Zanini, E. Boscolo-Marchi, R. Ferreira-Marques, Saed Dababneh, C. Borcea, N. Colonna, L. Ferreira-Lourenco, Corrie S. Moreau, S. Markov, A. Plukis, C. Domingo, R. C. Haight, F. Gramegna, C. Paradela, H. Beer, Michael Wiescher, C. Rubbia, N. Janeva, S. Lukic, A. Herrera-Martinez, Arnaud Ferrari, A. Molina-Coballes, Isabel S. Gonçalves, F. Voss, S. Marrone, Vasilis Vlachoudis, C. Tapia, Rene Reifarth, and A. Kelic
Subjects: Physics, Nuclear physics, Neutron capture, Large Hadron Collider
Published: 2003
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82. Measurements of high-energy neutron-induced fission ofnatPb and209Bi

Author: H. Álvarez, J. L. Tain, D. Cano-Ott, P. E. Koehler, Marco T. Pigni, Rene Reifarth, P. Pavlopoulos, I. Dillmann, J. M. Quesada, Masayuki Igashira, M. Kerveno, Christoph A. Stephan, G. Cortes, S. Lukic, G. Aerts, D. Tarrío, Corrie S. Moreau, S. Isaev, U. Abbondanno, F. Gunsig, Ralf Plag, Roberto Capote, A. Plukis, P.A. Assimakopoulos, F. Alvarez-Velarde, Gerald Badurek, G. Vannini, G. Tagliente, A. Ventura, C. Eleftheriadis, A. Herrera-Martinez, N. Patronis, W.I. Furman, C. Rubbia, S. Walter, A. Lindote, Arnaud Ferrari, M. C. Vicente, Thomas Rauscher, A. J. M. Plompen, R. Vlastou, L. Perrot, J. Marganiec, Alberto Mengoni, C. A. Papachristodoulou, E. Berthoumieux, S. Andriamonje, I. Lopes, L. Sarchiapone, D. Karadimos, E. Chiaveri, P. F. Mastinu, I. Savvidis, James L. Cox, L. Tassan-Got, Carlos Guerrero, E. González-Romero, H. Leeb, Heinz Oberhummer, R. C. Haight, F. Becvar, C. Paradela, L. Audouin, M. Krtička, C. Le Naour, R. Ferreira-Marques, T. Martinez, D. Trubert, Michael Wiescher, F. Voss, Cristian Massimi, K. Wisshak, S. David, B. Berthier, Y. Kadi, Michael Heil, Marco Calviani, E. Kossionides, I. Duran, V. Chepel, M. Oshima, G. Rudolf, C. T. Papadopoulos, Javier Praena, L. Ferrant, J. Andrzejewski, V. Vlachoudis, F. Neves, P. M. Milazzo, P. Baumann, D. Villamarin, C. Pretel, E. Jericha, K. Fujii, C. Santos, M. Embid-Segura, Isabel S. Gonçalves, S. Marrone, Manuel Lozano, L. Tavora, P. Rullhusen, P. Cennini, M. Mosconi, S. O'Brien, Nicola Colonna, F. Gramegna, R. Terlizzi, F. Käppeler, J. Pancin, J. Salgado, A. Poch, M. Dahlfors, C. Carrapiço, P. Vaz, Aaron Couture, B. Haas, F. Calviño, W. Dridi, C. Lampoudis, A. Pavlik, C. Domingo-Pardo, D. Karamanis, D. Tarrío, L. Tassan-Got, L. Audouin, B. Berthier, I. Duran, L. Ferrant, S. Isaev, C. Le Naour, C. Paradela, C. Stephan, D. Trubert, U. Abbondanno, G. Aert, H. Álvarez, F. Álvarez-Velarde, S. Andriamonje, J. Andrzejewski, P. Assimakopoulo, G. Badurek, P. Baumann, F. Becvár, E. Berthoumieux, F. Calviño, M. Calviani, D. Cano-Ott, R. Capote, C. Carrapiço, P. Cennini, V. Chepel, E. Chiaveri, N. Colonna, G. Corte, A. Couture, J. Cox, M. Dahlfor, S. David, I. Dillmann, C. Domingo-Pardo, W. Dridi, C. Eleftheriadi, M. Embid-Segura, A. Ferrari, R. Ferreira-Marque, K. Fujii, W. Furman, I. Gonçalve, E. González-Romero, F. Gramegna, C. Guerrero, F. Gunsig, B. Haa, R. Haight, M. Heil, A. Herrera-Martinez, M. Igashira, E. Jericha, Y. Kadi, F. Käppeler, D. Karadimo, D. Karamani, M. Kerveno, P. Koehler, E. Kossionide, M. Krticka, C. Lampoudi, H. Leeb, A. Lindote, I. Lope, M. Lozano, S. Lukic, J. Marganiec, S. Marrone, T. Martínez, C. Massimi, P. Mastinu, A. Mengoni, P.M. Milazzo, C. Moreau, M. Mosconi, F. Neve, H. Oberhummer, S. O’Brien, M. Oshima, J. Pancin, C. Papachristodoulou, C. Papadopoulo, N. Patroni, A. Pavlik, P. Pavlopoulo, L. Perrot, M.T. Pigni, R. Plag, A. Plompen, A. Pluki, A. Poch, J. Praena, C. Pretel, J. Quesada, T. Rauscher, R. Reifarth, C. Rubbia, G. Rudolf, P. Rullhusen, J. Salgado, C. Santo, L. Sarchiapone, I. Savvidi, G. Tagliente, J.L. Tain, L. Tavora, R. Terlizzi, G. Vannini, P. Vaz, A. Ventura, D. Villamarin, M.C. Vicente, V. Vlachoudi, R. Vlastou, F. Vo, S. Walter, M. Wiescher, and K. Wisshak
Subjects: High energy, Engineering, Fission, business.industry, Physics, QC1-999, Nuclear engineering, Nuclear Theory, Creative commons, Engineering physics, neutron time-of-flight facility, Neutron, Nuclear Experiment, business, License
Abstract: he CERN Neutron Time-Of-Flight (n_TOF) facility is well suited to measure low cross sections as those of neutron-induced fission in subactinides. The cross section ratios of (nat)Pb and (209)Bi relative to (235)U and (238)U were measured using PPAC detectors and a fragment coincidence method that allows us to identify the fission events. The present experiment provides first results for neutron-induced fission up to 1 GeV. Good agreement is found with previous experimental data below 200 MeV. The comparison with proton-induced fission indicates that the limiting regime where neutron-induced and proton-induced fission reach equal cross sections is close to 1 GeV.
Published: 2010
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83. Neutron capture measurements on the s-process termination isotopes lead and bismuth

Author: Isabel Lopes, G. Cortes, Masayuki Igashira, P. Cennini, F. Gramegna, S. David, G. Tagliente, Costas G. Papadopoulos, M. Embid-Segura, Wiescher Michael, I. Duran, C. Lamboudis, J. L. Tain, C. Eleftheriadis, L. Sarchiapone, M. Mosconi, Rene Reifarth, Robert C. Haight, D. Karamanis, N. Patronis, C. Stephan, F. Gunsing, Andrea Venturi, Corrie S. Moreau, Carlos Guerrero, U. Abbondanno, R. Vlastou, L. Perrot, Thomas Rauscher, E. Berthoumieux, S. O'Brien, Michael Heil, Manuel Lozano, D. Karadimos, C. Rubbia, Heinz Oberhummer, E. Jericha, J. Salgado, A. Lindote, Roberto Capote, R. Terlizzi, P. Pavlopoulos, V. Chepel, M. C. Vincente, Isabel S. Gonçalves, G. Rudolf, A. Poch, S. Marrone, J. M. Quesada, L. Tassan-Got, E. González-Romero, M. Kerveno, W.I. Furman, P. Baumann, G. Aerts, J. Pancin, L. Ferrant, C. Carrapiço, A. Goverdovski, F. Alvarez-Velarde, L. Tavora, P.A. Assimakopoulos, Sara Bisterzo, V. Ketlerov, F. Calviño, H. Leeb, S. Isaev, Gerald Badurek, A. Pavlik, A. Herrera-Martinez, L. Fitzpatrick, C. Domingo-Pardo, C. A. Papachristodoulou, B. Haas, M. Oshima, D. Cano-Ott, R. Dolfini, Arnaud Ferrari, R. Ferreira Marques, A. Plukis, Y. Kadi, D. Villamarin, J. Andrzejewski, S. Walter, Alberto Mengoni, H. Frais-Koelbl, K. Wisshak, Iris Dillmann, F. Neves, I. Savvidis, F. Voss, P. M. Milazzo, Ralf Plag, P. Rullhusen, A. J. M. Plompen, G. Vannini, F. Becvar, E. Kossionides, C. Paradela, J. Marganiec, H. Wendler, P. E. Koehler, W. Dridi, L. Audouin, M. Dahlfors, S. Andriamonje, Nicola Colonna, P. Vaz, James L. Cox, Vasilis Vlachoudis, Aaron Couture, H. Alvarez-Pol, V. Konovalov, E. Chiaveri, F. Käppeler, E. Griesmayer, P. F. Mastinu, S. Lukic, M. Krtička, Roberto Gallino, K. Fujii, M. Rosetti, and C. Pretel
Subjects: Nuclear physics, Astrophysics and Astronomy, Neutron capture, Materials science, Lead (geology), Isotope, chemistry, chemistry.chemical_element, s-process, Bismuth

84. Recent results at n_TOF and future perspectives

Author: S. Marrone, U. Abbondanno, G. Aerts, H. Álvarez, F. Alvarez-Velarde, S. Andriamonje, J. Andrzejewski, P. Assimakopoulos, L. Audouin, G. Badurek, P. Baumann, F. Bec^vár, E. Berthoumieux, M. Calviani, F. Calviño, D. Cano-Ott, R. Capote, A. Carrillo de Albornoz, P. Cennini, V. Chepel, E. Chiaveri, N. Colonna, G. Cortes, A. Couture, J. Cox, M. Dahlfors, S. David, I. Dillmann, R. Dolfini, C. Domingo-Pardo, W. Dridi, I. Duran, C. Eleftheriadis, M. Embid-Segura, L. Ferrant, A. Ferrari, R. Ferreira-Marques, L. Fitzpatrick, H. Frais-Koelbl, K. Fujii, W. Furman, R. Gallino, I. Goncalves, E. Gonzalez-Romero, A. Goverdovski, F. Gramegna, E. Griesmayer, C. Guerrero, F. Gunsing, B. Haas, R. Haight, M. Heil, A. Herrera- Martinez, M. Igashira, S. Isaev, E. Jericha, Y. Kadi, F. Käppeler, D. Karamanis, D. Karadimos, M. Kerveno, V. Ketlerov, P. Koehler, V. Konovalov, E. Kossionides, M. Krtic^ka, C. Lamboudis, H. Leeb, A. Lindote, I. Lopes, M. Lozano, S. Lukic, J. Marganiec, L. Marques, C. Massimi, P. Mastinu, A. Mengoni, P. M. Milazzo, C. Moreau, M. Mosconi, F. Neves, H. Oberhummer, S. O'Brien, J. Pancin, C. Papachristodoulou, C. Papadopoulos, C. Paradela, N. Patronis, A. Pavlik, P. Pavlopoulos, L. Perrot, M. Pignatari, R. Plag, A. Plompen, A. Plukis, A. Poch, C. Pretel, J. Quesada, T. Rauscher, R. Reifarth, M. Rosetti, C. Rubbia, G. Rudolf, P. Rullhusen, J. Salgado, L. Sarchiapone, I. Savvidis, C. Stephan, G. Tagliente, J. L. Tain, L. Tassan-Got, L. Tavora, R. Terlizzi, G. Vannini, P. Vaz, A. Ventura, D. Villamarin, M. C. Vincente, V. Vlachoudis, R. Vlastou, F. Voss, S. Walter, H. Wendler, M. Wiescher, K. Wisshak, Roald Guandalini, Sara Palmerini, Maurizio Busso, Département d'Astrophysique, de physique des Particules, de physique Nucléaire et de l'Instrumentation Associée (DAPNIA), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Département Recherches Subatomiques (DRS-IPHC), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire d'Orsay (IPNO), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Pole Universitaire Leonard de Vinci, Pôle Universitaire Léonard de Vinci (PULV), Roald Guandalini, Sara Palmerini, Maurizio Busso, nTOF, and Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)
Subjects: supernovae, Fission, Nuclear Theory, 02 engineering and technology, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 7. Clean energy, Nuclear physics, 24.10.-i, 26.20.-f, 97.10.Cv, 97.10.Tk, 0202 electrical engineering, electronic engineering, information engineering, Nuclear astrophysics, Neutron, Nuclear Experiment, time of flight spectroscopy, Physics, stellar evolution, Large Hadron Collider, 020206 networking & telecommunications, Neutron capture, nuclear reactions and scattering, chemical analysis, neutron sources, Physics::Accelerator Physics, r-process, Neutron source, 020201 artificial intelligence & image processing, s-process
Abstract: International audience; The neutron Time-of-Flight facility at CERN has been used for a series of neutron capture and fission cross sections measurements. The facility, detectors and data analysis techniques are described, followed by a brief review of the capture results and of the preliminary results for selected fission cross sections. The problem of photon strength functions is discussed and preliminary first results are presented. All these subjects are discussed with respect to their implications in Nuclear Astrophysics. The last section is dedicated to the future perspectives concerning the next experimental campaign and the upgrade of the facility.
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85. Capture cross section measurements of 186,187,188-Os at n TOF: the resolved resonance region

Author: K. Fujii, M. Mosconi, P. M. Milazzo, C. Domingo-Pardo, F. Käppeler, A. Mengoni, U. Abbondanno, G. Aerts, H. Álvarez, F. Álvarez-Velarde, S. Andriamonje, J. Andrzejewski, P. Assimakopoulos, L. Audouin, G. Badurek, P. Baumann, F. Bečvář, E. Berthoumieux, F. Calviño, M. Calviani, D. Cano-Ott, R. Capote, C. Carrapiço, P. Cennini, V. Chepel, E. Chiaveri, N. Colonna, G. Cortes, A. Couture, J. Cox, M. Dahlfors, S. David, I. Dillmann, W. Dridi, I. Duran, C. Eleftheriadis, M. Embid-Segura, L. Ferrant, A. Ferrari, R. Ferreira-Marques, W. Furman, I. Goncalves, E. González-Romero, F. Gramegna, C. Guerrero, F. Gunsing, B. Haas, R. Haight, M. Heil, A. Herrera-Martinez, M. Igashira, E. Jericha, Y. Kadi, D. Karadimos, D. Karamanis, M. Kerveno, P. Koehler, E. Kossionides, M. Krtička, C. Lampoudis, H. Leeb, A. Lindote, I. Lopes, M. Lozano, S. Lukic, J. Marganiec, S. Marrone, T. Martínez, C. Massimi, P. Mastinu, C. Moreau, F. Neves, H. Oberhummer, S. O'Brien, J. Pancin, C. Papachristodoulou, C. Papadopoulos, C. Paradela, N. Patronis, A. Pavlik, P. Pavlopoulos, L. Perrot, M. T. Pigni, R. Plag, A. Plompen, A. Plukis, A. Poch, J. Praena, C. Pretel, J. Quesada, T. Rauscher, R. Reifarth, C. Rubbia, G. Rudolf, P. Rullhusen, J. Salgado, C. Santos, L. Sarchiapone, I. Savvidis, C. Stephan, G. Tagliente, J. L. Tain, L. Tassan-Got, L. Tavora, R. Terlizzi, G. Vannini, P. Vaz, A. Ventura, D. Villamarin, M. C. Vincente, V. Vlachoudis, R. Vlastou, F. Voss, S. Walter, M. Wiescher, K. Wisshak, Universitat Politècnica de Catalunya. Departament de Física i Enginyeria Nuclear, and Universitat Politècnica de Catalunya. GREENER - Grup de recerca d'estudis energètics i de les radiacions
Subjects: Physics, Neutron cross sections, Isotope, Física [Àrees temàtiques de la UPC], Reaccions nuclears, Nuclear data, Resonance (particle physics), Neutron temperature, Nuclear physics, Neutron capture, Nucleosynthesis, Neutron, s-process, Nuclear Experiment, Nucleosíntesi
Abstract: The neutron capture cross sections of 186,187,188Os have been measured at the CERN neutron time-of-flight facility, n TOF, in the neutron energy range from 1 eV up to 1MeV. In this contribution, we report the results of the analysis of the resolved resonance region (RRR). Resonance parameters have been extracted from a full R-matrix fit of the capture yields with the SAMMY code. A statistical analysis has been performed and the related average resonance parameters are derived. This information is crucial for a complete understanding and modeling in terms of the Hauser-Feshbach statistical model of the capture and inelastic reaction channels, required for the evaluation of the stellar reaction rates of these isotopes. Maxwellian average cross sections for the range of temperatures relevant for s-process nucleosynthesis have been derived from the combined information of the experimental data in the resolved and unresolved resonance regions. A brief account of the implications of this analysis in the estimation of the s-process component of the 187Os abundance and the related impact on the estimates of the time-duration of the galactic nucleosynthesis through the Re/Os clock is given.

86. Experimental challenges for the Re/Os clock

Author: L. Tavora, M. Krtička, Roberto Gallino, K. Wisshak, M. Dahlfors, G. Cortes, A. J. M. Plompen, M. Oshima, P. Vaz, J. Andrzejewski, I. Savvidis, P. Rullhusen, Aaron Couture, V. Konovalov, A. Goverdovski, Roberto Capote, P.A. Assimakopoulos, H. Wendler, James L. Cox, F. Alvarez-Velarde, A. Pavlik, F. Neves, W.I. Furman, P. Cennini, F. Voss, Gerald Badurek, F. Becvar, Wiescher Michael, P. M. Milazzo, S. David, A. Plukis, Andrea Venturi, R. Dolfini, Corrie S. Moreau, E. Kossionides, Isabel Lopes, C. A. Papachristodoulou, Nicola Colonna, M. Mosconi, G. Tagliente, S. Andriamonje, R. Vlastou, G. Vannini, E. Berthoumieux, Vasilis Vlachoudis, H. Alvarez-Pol, M. Rosetti, E. Chiaveri, Costas G. Papadopoulos, F. Käppeler, J. Marganiec, P. F. Mastinu, S. O'Brien, B. Haas, S. Lukic, Carlos Guerrero, J. Salgado, M. C. Vincente, U. Abbondanno, Iris Dillmann, F. Calviño, H. Leeb, A. Poch, A. Lindote, D. Cano-Ott, Heinz Oberhummer, C. Pretel, M. Embid-Segura, R. Terlizzi, E. Jericha, F. Gramegna, C. Eleftheriadis, S. Walter, Manuel Lozano, W. Dridi, Thomas Rauscher, Ralf Plag, Rene Reifarth, S. Isaev, J. Pancin, C. Carrapiço, C. Stephan, F. Gunsing, J. M. Quesada, Michael Heil, L. Tassan-Got, Masayuki Igashira, K. Fujii, D. Karadimos, E. González-Romero, César Domingo Pardo, C. Paradela, G. Aerts, D. Karamanis, N. Patronis, V. Ketlerov, L. Audouin, P. Pavlopoulos, L. Ferrant, L. Fitzpatrick, Y. Kadi, D. Villamarin, H. Frais-Koelbl, Sara Bisterzo, A. Herrera-Martinez, Arnaud Ferrari, R. Ferreira Marques, Alberto Mengoni, L. Sarchiapone, M. Kerveno, V. Chepel, G. Rudolf, P. Baumann, C. Lamboudis, J. L. Tain, Robert C. Haight, I. Duran, C. Rubbia, L. Perrot, Isabel S. Gonçalves, S. Marrone, P. E. Koehler, and E. Griesmayer
Subjects: Astrophysics and Astronomy, Chemistry

87. The 237Np(n,f) cross section at the CERN n-TOF facility

Author: R. C. Haight, A. Pavlik, C. Domingo-Pardo, C. Paradela, M. Oshima, M. Rosetti, S. Andriamonje, J. Andrzejewski, A. Goverdovski, Masayuki Igashira, Michael Wiescher, F. Alvarez-Velarde, C. Pretel, K. Wisshak, L. Audouin, F. Bečvář, R. Dolfini, Carlos Guerrero, U. Abbondanno, C. Eleftheriadis, V. Konovalov, H. Wendler, D. Karamanis, N. Patronis, S. Lukic, E. Chiaveri, C. Stephan, P. F. Mastinu, F. Gunsing, P. Vaz, F. Neves, P. M. Milazzo, A. Mengoni, Corrie S. Moreau, Aaron Couture, Heinz Oberhummer, A. Ventura, G. Aerts, M. Embid-Segura, G. Vannini, P. Cennini, V. Ketlerov, E. Berthoumieux, S. David, G. Tagliente, H. Álvarez, D. Cortina, Manuel Lozano, D. Cano-Ott, F. Voss, C. Lamboudis, J. L. Tain, M. C. Vincente, F. Calviño, H. Leeb, M. Diakaki, L. Ferrant, R. Gallino, B. Haas, A. Carrillo de Albornoz, L. Fitzpatrick, W.I. Furman, M. Mosconi, G. Badurek, A. J. M. Plompen, A. Lindote, J. Salgado, M. Kerveno, Vasilis Vlachoudis, A. Poch, Isabel Lopes, D. Villamarin, F. Gramegna, S. O'Brien, E. Jericha, W. Dridi, Rene Reifarth, A. Dorochenko, G. Cortes, Thomas Rauscher, J. Marganiec, C. A. Papachristodoulou, James L. Cox, A. Herrera-Martinez, J. M. Quesada, S. Isaev, L. Tassan-Got, E. Kossionides, Arnaud Ferrari, D. Kolokolov, Matthias Heil, J. Pancin, D. Karadimos, R. Terlizzi, Ralf Plag, J. Benlliure, Roberto Capote, P.A. Assimakopoulos, L. Tavora, K. Fujii, R. Vlastou, I. Savvidis, P. Rullhusen, E. González-Romero, C. T. Papadopoulos, Y. Kadi, C. Rubbia, H. Frais-Koelbl, Isabel S. Gonçalves, S. Marrone, L. Sarchiapone, M. Sedysheva, E. Griesmayer, P. E. Koehler, I. Duran, L. Perrot, F. Käppeler, P. Pavlopoulos, L. Marques, V. Chepel, G. Rudolf, N. Colonna, P. Baumann, A. Plukis, M. Krtička, R. Ferreira-Marques, Universitat Politècnica de Catalunya. Departament de Física, and Universitat Politècnica de Catalunya. ANT - Advanced Nuclear Technologies Research Group
Subjects: Nuclear reaction, Physics, Energies::Energia nuclear [Àrees temàtiques de la UPC], Neutrons, Fission, Física [Àrees temàtiques de la UPC], Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Nuclear physics, Neutron induced fission, Neutron, Neutron temperature, Uranium-238, CERN, Uranium-235, Neutron source, n_TOF, Física nuclear, Nuclear Experiment, Spallation Neutron Source
Abstract: The 237Np(n,f) cross sections have been measured at the n-TOF facility relative to the 235U and 238U fission cross sections. The n-TOF spallation neutron source at CERN is characterized by a high intensity flux, an excellent time resolution and an extensive neutron energy range (from eV to GeV). A fast ionization chamber was used as a fission fragment detector with efficiency better than 97%. Preliminary 237Np(n,f) cross sections have been deduced in the energy range from 20 keV to 10 MeV and are found in good agreement with data from literature.

88. Measurement of the neutron induced fission cross section on transuranic (TRU) elements at the n_TOF facility at CERN

Author: P. F. Mastinu, U. Abbondanno, G. Aerts, H. Álvarez, F. Álvarez-Velarde, S. Andriamonje, J. Andrzejewski, P. Assimakopoulos, L. Audouin, G. Badurek, P. Baumann, F. Becvár, E. Berthoumieux, F. Calviño, M. Calviani, D. Cano-Ott, R. Capote, C. Carrapiço, P. Cennini, V. Chepel, E. Chiaveri, N. Colonna, G. Cortes, A. Couture, J. Cox, M. Dahlfors, S. David, I. Dillman, C. Domingo-Pardo, W. Dridi, I. Duran, C. Eleftheriadis, M. Embid-Segura, L. Ferrant, A. Ferrari, R. Ferreira-Marques, K. Fujii, W. Furman, I. Goncalves, E. González-Romero, F. Gramegna, C. Guerrero, F. Gunsing, B. Haas, R. Haight, M. Heil, A. Herrera-Martinez, M. Igashira, E. Jericha, F. Käppeler, Y. Kadi, D. Karadimos, D. Karamanis, M. Kerveno, P. Koehler, E. Kossionides, M. Krticka, C. Lampoudis, H. Leeb, A. Lindote, I. Lopes, M. Lozano, S. Lukic, J. Marganiec, S. Marrone, T. Martínez, C. Massimi, A. Mengoni, P.M. Milazzo, C. Moreau, M. Mosconi, F. Neves, H. Oberhummer, S. O'Brien, J. Pancin, C. Papachristodoulou, C. Papadopoulos, C. Paradela, N. Patronis, A. Pavlik, P. Pavlopoulos, L. Perrot, M. T. Pigni, R. Plag, A. Plompen, A. Plukis, A. Poch, J. Praena, C. Pretel, J. Quesada, T. Rauscher, R. Reifarth, C. Rubbia, G. Rudolf, P. Rullhusen, J. Salgado, C. Santos, L. Sarchiapone, I. Savvidis, C. Stephan, G. Tagliente, J. L. Tain, L. Tassan-Got, L. Tavora, R. Terlizzi, G. Vannini, P. Vaz, A. Ventura, D. Villamarin, M. C. Vincente, V. Vlachoudis, R. Vlastou, F. Voss, S. Walter, M. Wiescher, K. Wisshak, Ricardo Alarcon, Philip L. Cole, Chaden Djalali, Fernando Umeres, Département d'Astrophysique, de physique des Particules, de physique Nucléaire et de l'Instrumentation Associée (DAPNIA), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Institut de Physique Nucléaire d'Orsay (IPNO), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Département Recherches Subatomiques (DRS-IPHC), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Pole Universitaire Leonard de Vinci, Pôle Universitaire Léonard de Vinci (PULV), R. Alarcon, Ph.L. Cole, Ch. Djalali, F. Umeres, nTOF, Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear, and Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Physics, Large Hadron Collider, Isotope, Fission, 020206 networking & telecommunications, ionisation chambers, 02 engineering and technology, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 7. Clean energy, Nuclear physics, fission reactor design, Uranium-238, nuclear reactions and scattering, Uranium-233, Ionization chamber, 25.85.Ec, 25.40.-h, 28.20.-v, 29.40.Cs, 28.41.Kw, 0202 electrical engineering, electronic engineering, information engineering, Uranium-235, radioactive waste, nuclear power, 020201 artificial intelligence & image processing, Neutron, neutron-nucleus reactions
Abstract: International audience; During the 2004 campaign, the n_TOF collaboration measured neutron fission cross sections for ^{233}U, ^{241,243}Am, ^{245}Cm, as well as the fission standards ^{235,238}U, using a sealed Fission Ionization Chamber (FIC). The setup included a total of 16 targets and 18 electrodes mounted together in a 50-cm length chamber, allowing the measurements of all isotopes at the same time, thus in the same experimental conditions. A brief description of the facility and of the detector setup will be presented followed by the preliminary results of the analysis of ^{235}U, ^{233}U, and ^{245}Cm from thermal energies up to some tenths of MeV.
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89. Measurement of the neutron-induced fission cross-section of 241Am at the time-of-flight facility n_TOF

Author: S. David, G. Tagliente, P. E. Koehler, G. Cortes, D. Tarrío, A. J. M. Plompen, A. Goverdovski, F. Alvarez-Velarde, Manuel Lozano, M. Krtička, J. Salgado, F. Calviño, A. Poch, E. Kossionides, G. Rudolf, I. Lopes, Marco T. Pigni, I. Dillmann, Roberto Capote, R. Ferreira-Marques, T. Martinez, L. Tavora, M. Kerveno, Gerald Badurek, J. Marganiec, Javier Praena, S. Andriamonje, C. Carrapiço, M. Embid-Segura, James L. Cox, E. Gonzalez-Romero, E. Chiaveri, G. Aerts, P. F. Mastinu, G. Vannini, M. Dahlfors, P. Vaz, Mario Barbagallo, Corrie S. Moreau, H. Leeb, E. Jericha, F. Belloni, L. Sarchiapone, Alberto Ventura, Rene Reifarth, Aaron Couture, K. Wisshak, K. Fujii, I. Duran, M. Meaze, A. Pavlik, Michael Heil, J. M. Quesada, P. Rullhusen, L. Tassan-Got, C. Domingo-Pardo, A. Herrera-Martinez, N. Patronis, B. Haas, C. Eleftheriadis, A. Plukis, R. C. Haight, Arnaud Ferrari, S. Walter, Thomas Rauscher, C. Paradela, F. Gunsing, W.I. Furman, A. Lindote, Alberto Mengoni, C. Santos, W. Dridi, R. Vlastou, Cristian Massimi, Michael Wiescher, D. Karadimos, Masayuki Igashira, F. Neves, J. Andrzejewski, P. Pavlopoulos, P. Cennini, Y. Kadi, F. Bečvář, P. M. Milazzo, D. Karamanis, L. Perrot, C. T. Papadopoulos, F. Käppeler, M. Rosetti, F. Voss, Marco Calviani, M. Mosconi, D. Cano-Ott, V. Chepel, C. Pretel, C. Stephan, S. O'Brien, D. Villamarin, P. Baumann, R. Terlizzi, C. Rubbia, L. Audouin, C. A. Papachristodoulou, Isabel S. Gonçalves, S. Marrone, H. Álvarez, C. Lamboudis, J. L. Tain, Ralf Plag, Carlos Guerrero, Heinz Oberhummer, M. C. Vincente, U. Abbondanno, I. Savvidis, E. Berthoumieux, Nicola Colonna, Vasilis Vlachoudis, S. Lukic, F. Gramegna, Belloni F., Calviani M., Colonna N., Mastinu P., Milazzo P.M., Abbondanno U., Aerts G., Álvarez H., Alvarez-Velarde F., Andriamonje S., Andrzejewski J., Audouin L., Badurek G., Barbagallo M., Baumann P., Bečvář F., Berthoumieux E., Calviño F., Cano-Ott D., Capote R., Carrapiço C., Cennini P., Chepel V., Chiaveri E., Cortes G., Couture A., Cox J., Dahlfors M., David S., Dillmann I., Domingo-Pardo C., Dridi W., Duran I., Eleftheriadis C., Embid-Segura M., Ferrari A., Ferreira-Marques R., Fujii K., Furman W., Goncalves I., Gonzalez-Romero E., Goverdovski A., Gramegna F., Guerrero C., Gunsing F., Haas B., Haight R., Heil M., Herrera-Martinez A., Igashira M., Jericha E., Käppeler F., Kadi Y., Karadimos D., Karamanis D., Kerveno M., Koehler P., Kossionides E., Krtička M., Lamboudis C., Leeb H., Lindote A., Lopes I., Lozano M., Lukic S., Marganiec J., Marrone S., Martínez T., Massimi C., Meaze M.H., Mengoni A., Moreau C., Mosconi M., Neves F., Oberhummer H., O’Brien S., Papachristodoulou C., Papadopoulos C., Paradela C., Patronis N., Pavlik A., Pavlopoulos P., Perrot L., Pigni M.T., Plag R., Plompen A., Plukis A., Poch A., Praena J., Pretel C., Quesada J., Rauscher T., Reifarth R., Rosetti M., Rubbia C., Rudolf G., Rullhusen P., Salgado J., Santos C., Sarchiapone L., Savvidis I., Stephan C., Tagliente G., Tain J.L., Tarrio D., Tassan-Got L., Tavora L., Terlizzi R., Vannini G., Vaz P., Ventura A., Villamarin D., Vincente M.C., Vlachoudis V., Vlastou R., Voss F., Walter S., Wiescher M., Wisshak K., Ventura, A., and Rosetti, M.
Subjects: Physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, Fission, Hadron, Nuclear data, FISSION, 01 natural sciences, NEUTRON TIME-OF-FLIGHT, Nuclear physics, Time of flight, 13. Climate action, Neutron flux, 0103 physical sciences, Ionization chamber, Nuclear fusion, Neutron, MEASUREMENTS, Nuclear Experiment, 010306 general physics
Abstract: The neutron-induced fission cross-section of 241Am has been measured relative to the standard fission cross-section of 235U between 0.5 and 20MeV. The experiment was performed at the CERN n_TOF facility. Fission fragments were detected by a fast ionization chamber by discriminating against the α- particles from the high radioactivity of the samples. The high instantaneous neutron flux and the low background of the n_TOF facility enabled us to obtain uncertainties of ≈ 5%. With the present results it was possible to resolve discrepancies between previous data sets and to confirm current evaluations, thus providing important information for design studies of future reactors with improved fuel burn-up. © The Author(s) 2013.
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90. A low-mass neutron flux monitor for the n_TOF facility at CERN

Author: S. David, G. Tagliente, G. Vannini, F. Käppeler, E. Savvidis, F. Rejmund, M. Terrani, V. Chepel, L. Ferrant, A. Lindote, D. Karamanis, P. Baumann, T. Papaevangelou, E. Chiaveri, Per Carlson, A. Perez-Parra, P. E. Koehler, P. F. Mastinu, Corrie S. Moreau, J. Salgado, V. Peskov, B. Berthier, A. Poch, M. Loriggiola, S. Andriamonje, J.C. Soares, G. Cortes, C. Borcea, C. Eleftheriadis, M. Embid-Segura, M. Vincente-Vincente, W.I. Furman, H. Leeb, A. Goverdovski, E. Mínguez, F. Neves, L. Ferreira-Lourenco, Y. Kadi, D. Villamarin-Fernandez, H. Frais-Koelbl, V. Lacoste, P. M. Milazzo, D. Cortina, Manuel Lozano, Gerald Badurek, A. Angelopoulos, Roberto Capote, P.A. Assimakopoulos, F. Voss, F. Becvar, I. Duran, N. Tsangas, M. Rosetti, R. C. Haight, Nicola Colonna, K. Wisshak, H. Álvarez, J. L. Tain, L. Zanini, E. Jericha, Thomas Rauscher, C. Paradela, Vasilis Vlachoudis, R. Dolfini, M.I. Lopes, R. Ferreira-Marques, R. Vlastou, H. Beer, L. Perrot, C. Tapia, I. F. Gonçalves, H. Wendler, K.G. Ioannides, F. Gramegna, Saed Dababneh, George Kitis, E. Kossionides, F. Gunsing, E. Boscolo-Marchi, Sigfrido Boffi, Michael Wiescher, A. Ventura, D. Cano-Ott, E. Gonzalez-Romero, Y. Giomataris, Ralf Plag, J. Benlliure, Marco Radici, N. Janeva, C. Rubbia, P. Pavlopoulos, Ch.O. Bacri, A. Plukis, E. Griesmayer, A.J.P.L. Policarpo, Subramanian Raman, S. Lukic, N. Bustreo, S. Marrone, A. J. M. Plompen, José M. Martínez-Val, U. Abbondanno, José Manuel Perlado, Heinz Oberhummer, G. Rudolf, W. Rapp, Michael Heil, P. Calviño, E. Berthomieux, V. Konovalov, C. Pretel, James L. Cox, V. Ketlerov, G. Aerts, P. Cennini, A. Herrera-Martinez, Arnaud Ferrari, C. Stephan, S. O'Brien, Alberto Mengoni, R. Terlizzi, A. Molina-Coballes, L. Tavora, P. Rullhusen, J. Pancin, S. Markov, S. Marigo, M. Dahlfors, P. Vaz, Aaron Couture, A. Pavlik, C. Domingo-Pardo, Rene Reifarth, A. Kelic, J. M. Quesada, L. Tassan-Got, C. Coceva, Institut de Physique Nucléaire d'Orsay (IPNO), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), and TOF
Subjects: TheoryofComputation_COMPUTATIONBYABSTRACTDEVICES, Silicon, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, General Physics and Astronomy, chemistry.chemical_element, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, ComputingMethodologies_ARTIFICIALINTELLIGENCE, Nuclear physics, 0103 physical sciences, Neutron, 010306 general physics, Nuclear Experiment, Physics, Large Hadron Collider, 010308 nuclear & particles physics, Scattering, Detector, TheoryofComputation_GENERAL, Neutron radiation, Neutron capture, ComputingMethodologies_PATTERNRECOGNITION, chemistry, Physics::Accelerator Physics, Low Mass
Abstract: A small-mass system has been developed for monitoring the flux of neutrons with energy up to 1 MeV at the new time-of-flight facility at CERN, n_TOF. The monitor is based on a thin Mylar foil with a 6Li deposit, placed in the neutron beam, and an array of Silicon detectors, placed outside the beam, for detecting the products of the 6Li(n, alpha)³H reaction. The small amount of material on the beam ensures a minimal perturbation of the flux and minimizes the background related to scattered neutrons. Moreover, a further reduction of the gamma-ray background has been obtained by constructing the scattering chamber hosting the device in carbon fibre. A detailed description of the flux monitor is here presented, together with the characteristics of the device, in terms of efficiency, resolution and induced background. The use of the monitor in the measurement of neutron capture cross-sections at n_TOF is discussed

91. Measurement of the neutron-induced fission cross-section of 243Am relative to 235U from 0.5 to 20 MeV

Author: Rene Reifarth, Manuel Lozano, J. M. Quesada, L. Tassan-Got, M. Krtička, G. Aerts, Mario Barbagallo, I. Duran, I. Dillmann, E. Berthoumieux, R. Ferreira-Marques, T. Martinez, L. Perrot, S. David, V. Chepel, L. Audouin, M. C. Vincente, P. Baumann, J. Marganiec, S. Andriamonje, C. Santos, Ralf Plag, G. Tagliente, L. Tavora, Masayuki Igashira, C. T. Papadopoulos, F. Gunsing, F. Bečvář, M. Dahlfors, B. Haas, U. Abbondanno, E. Chiaveri, P. F. Mastinu, J. Andrzejewski, G. Cortes, P. Rullhusen, Carlos Guerrero, P. Vaz, D. Karamanis, Carlo Rubbia, A. Goverdovski, Nicola Colonna, F. Alvarez-Velarde, Heinz Oberhummer, Vasilis Vlachoudis, Alberto Ventura, Aaron Couture, E. Kossionides, A. Herrera-Martinez, N. Patronis, I. Savvidis, Isabel S. Gonçalves, Gerald Badurek, R. C. Haight, D. Tarrío, Cristian Massimi, A. Pavlik, W. Dridi, C. Domingo-Pardo, S. Marrone, P. Cennini, Arnaud Ferrari, E. Jericha, C. Paradela, S. Lukic, M. Kerveno, F. Käppeler, M. Mosconi, J. Salgado, D. Cano-Ott, P. E. Koehler, A. Poch, W.I. Furman, C. Stephan, S. O'Brien, P. Pavlopoulos, S. Walter, Javier Praena, C. A. Papachristodoulou, Alberto Mengoni, R. Terlizzi, A. Lindote, K. Wisshak, Michael Wiescher, A. Plukis, F. Gramegna, D. Villamarin, Roberto Capote, M. Embid-Segura, F. Neves, H. Álvarez, Marco T. Pigni, P. M. Milazzo, C. Lamboudis, J. L. Tain, F. Calviño, H. Leeb, F. Belloni, G. Vannini, Michael Heil, C. Pretel, C. Carrapiço, A. J. M. Plompen, E. Gonzalez-Romero, G. Rudolf, I. Lopes, James L. Cox, Corrie S. Moreau, K. Fujii, L. Sarchiapone, M. Meaze, M. Rosetti, F. Voss, J. Pancin, R. Vlastou, C. Eleftheriadis, Y. Kadi, Thomas Rauscher, D. Karadimos, Marco Calviani, Universitat Politècnica de Catalunya. Departament de Física i Enginyeria Nuclear, Universitat Politècnica de Catalunya. GREENER - Grup de recerca d'estudis energètics i de les radiacions, Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Département Recherches Subatomiques (DRS-IPHC), Institut Pluridisciplinaire Hubert Curien (IPHC), Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Aval du cycle et Energie Nucléaire (ACEN), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Pôle Universitaire Léonard de Vinci, Pôle Universitaire Léonard de Vinci (PULV), Institut de Physique Nucléaire d'Orsay (IPNO), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), TOF, Belloni F., Calviani M., Colonna N., Mastinu P., Milazzo P., Abbondanno U., Aerts G., Álvarez H., Alvarez-Velarde F., Andriamonje S., Andrzejewski J., Audouin L., Badurek G., Barbagallo M., Baumann P., Bečvář F., Berthoumieux E., Calviño F., Cano-Ott D., Capote R., Carrapiço C., Cennini P., Chepel V., Chiaveri E., Cortes G., Couture A., Cox J., Dahlfors M., David S., Dillmann I., Domingo-Pardo C., Dridi W., Duran I., Eleftheriadis C., Embid-Segura M., Ferrari A., Ferreira-Marques R., Fujii K., Furman W., Goncalves I., Gonzalez-Romero E., Goverdovski A., Gramegna F., Guerrero C., Gunsing F., Haas B., Haight R., Heil M., Herrera-Martinez A., Igashira M., Jericha E., Käppeler F., Kadi Y., Karadimos D., Karamanis D., Kerveno M., Koehler P., Kossionides E., Krtička M., Lamboudis C., Leeb H., Lindote A., Lopes I., Lozano M., Lukic S., Marganiec J., Marrone S., Martínez T., Massimi C., Meaze M., Mengoni A., Moreau C., Mosconi M., Neves F., Oberhummer H., O’Brien S., Pancin J., Papachristodoulou C., Papadopoulos C., Paradela C., Patronis N., Pavlik A., Pavlopoulos P., Perrot L., Pigni M., Plag R., Plompen A., Plukis A., Poch A., Praena J., Pretel C., Quesada J., Rauscher T., Reifarth R., Rosetti M., Rubbia C., Rudolf G., Rullhusen P., Salgado J., Santos C., Sarchiapone L., Savvidis I., Stephan C., Tagliente G., Tain J., Tarrio D., Tassan-Got L., Tavora L., Terlizzi R., Vannini G., Vaz P., Ventura A., Villamarin D., Vincente M., Vlachoudis V., Vlastou R., Voss F., Walter S., Wiescher M., Wisshak K., Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Nuclear and High Energy Physics, NEUTRON-INDUCED FISSION, Fission, Flux, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 7. Clean energy, 01 natural sciences, Nuclear physics, Nuclear reactors, Reactors nuclears, 0103 physical sciences, Nuclear fusion, Neutron, 010306 general physics, Nuclear Experiment, Physics, Energies::Energia nuclear [Àrees temàtiques de la UPC], Neutrons, Range (particle radiation), Large Hadron Collider, 010308 nuclear & particles physics, Time of flight, TIME-OF-FLIGHT, Energies::Energia nuclear::Reactors nuclears de fusió [Àrees temàtiques de la UPC], Ionization chamber, CROSS SECTION
Abstract: See paper for full list of authors.; The ratio of the neutron-induced fission cross-sections of 243Am and 235U was measured in the energy range from 0.5 to 20 MeV with uncertainties of ≈ 4%. The experiment was performed at the CERN n_TOF facility using a fast ionization chamber. With the good counting statistics that could be achieved thanks to the high instantaneous flux and the low backgrounds, the present results are useful for resolving discrepancies in previous data sets and are important for future reactors with improved fuel burn-up.
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92. 96Zr(n, γ) measurement at the n_TOF facility at CERN

Author: TAGLIENTE, G., M. MILAZZO, P., FUJII, K., ABBONDANNO, U., AERTS, G., ÁLVAREZ, H., ALVAREZ-VELARDE, F., ANDRIAMONJE, S., ANDRZEJEWSKI, J., AUDOUIN, L., BADUREK, G., BAUMANN, P., BEČVÁŘ, F., BELLONI, F., BERTHOUMIEUX, E., CALVIÑO, F., CALVIANI, M., CANO-OTT, D., CAPOTE, R., CARRAPIÇO, C., CENNINI, P., CHEPEL, V., CHIAVERI, E., COLONNA, N., CORTES, G., COUTURE, A., DAHLFORS, M., DAVID, S., DILLMANN, I., DOMINGO-PARDO, C., DRIDI, W., DURAN, I., ELEFTHERIADIS, C., EMBID-SEGURA, M., FERRARI, Anthony, FERREIRA-MARQUES, R., FURMAN, W., GONCALVES, I., GONZALEZ-ROMERO, E., GRAMEGNA, F., GUERRERO, C., GUNSING, F., HAAS, B., HAIGHT, R., HEIL, M., HERRERA-MARTINEZ, A., JERICHA, E., KÄPPELER, F., KADI, Y., KARADIMOS, D., KARAMANIS, D., KERVENO, M., KOSSIONIDES, E., KRTIČKA, M., LAMBOUDIS, C., LEEB, H., LINDOTE, A., LOPES, I., LUKIC, S., MARGANIEC, J., MARRONE, S., MARTÍNEZ, T., MASSIMI, C., MASTINU, P., MENGONI, A., MOREAU, C., MOSCONI, M., NEVES, F., OBERHUMMER, H., O'BRIEN, S., PANCIN, J., PAPACHRISTODOULOU, C., PAPADOPOULOS, C., PARADELA, C., PATRONIS, N., PAVLIK, A., PAVLOPOULOS, P., PERROT, L., T. PIGNI, M., PLAG, R., PLOMPEN, A., PLUKIS, A., POCH, A., PRAENA, J., PRETEL, C., QUESADA, J., REIFARTH, R., ROSETTI, M., RUBBIA, C., RUDOLF, G., RULLHUSEN, P., SALGADO, J., SANTOS, C., SARCHIAPONE, L., SAVVIDIS, I., STEPHAN, C., L. TAIN, J., TASSAN-GOT, L., TAVORA, L., TERLIZZI, R., VANNINI, G., VAZ, P., VENTURA, A., VILLAMARIN, D., C. VINCENTE, M., VLACHOUDIS, V., VLASTOU, R., VOSS, F., WALTER, S., WIESCHER, M., WISSHAK, K., Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Institut de Physique Nucléaire d'Orsay (IPNO), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Département Recherches Subatomiques (DRS-IPHC), Institut Pluridisciplinaire Hubert Curien (IPHC), Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Aval du cycle et Energie Nucléaire (ACEN), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Pôle Universitaire Léonard de Vinci, Pôle Universitaire Léonard de Vinci (PULV), nTOF, G. Tagliente, P. M. Milazzo, K. Fujii, U. Abbondanno, G. Aert, H. Álvarez, F. Alvarez-Velarde, S. Andriamonje, J. Andrzejewski, L. Audouin, G. Badurek, P. Baumann, F. Bečvář, F. Belloni, E. Berthoumieux, F. Calviño, M. Calviani, D. Cano-Ott, R. Capote, C. Carrapiço, P. Cennini, V. Chepel, E. Chiaveri, N. Colonna, G. Corte, A. Couture, M. Dahlfor, S. David, I. Dillmann, C. Domingo-Pardo, W. Dridi, I. Duran, C. Eleftheriadi, M. Embid-Segura, A. Ferrari, R. Ferreira-Marque, W. Furman, I. Goncalve, E. Gonzalez-Romero, F. Gramegna, C. Guerrero, F. Gunsing, B. Haa, R. Haight, M. Heil, A. Herrera-Martinez, E. Jericha, F. Käppeler, Y. Kadi, D. Karadimo, D. Karamani, M. Kerveno, E. Kossionide, M. Krtička, C. Lamboudi, H. Leeb, A. Lindote, I. Lope, S. Lukic, J. Marganiec, S. Marrone, T. Martínez, C. Massimi, P. Mastinu, A. Mengoni, C. Moreau, M. Mosconi, F. Neve, H. Oberhummer, S. O’Brien, J. Pancin, C. Papachristodoulou, C. Papadopoulo, C. Paradela, N. Patroni, A. Pavlik, P. Pavlopoulo, L. Perrot, M. T. Pigni, R. Plag, A. Plompen, A. Pluki, A. Poch, J. Praena, C. Pretel, J. Quesada, R. Reifarth, M. Rosetti, C. Rubbia, G. Rudolf, P. Rullhusen, J. Salgado, C. Santo, L. Sarchiapone, I. Savvidi, C. Stephan, J. L. Tain, L. Tassan-Got, L. Tavora, R. Terlizzi, G. Vannini, P. Vaz, A. Ventura, D. Villamarin, M. C. Vincente, V. Vlachoudi, R. Vlastou, F. Vo, S. Walter, M. Wiescher, K. Wisshak, Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)
Subjects: s proce, neutron reaction, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], NEUTRON CAPTURE CROSS SECTION
Abstract: The (n, γ) cross section of 96Zr has been investigated at the CERN n_TOF spallation neutron source. High-resolution time-of-flight measurements using an enriched ZrO2 sample allowed us to analyze 15 resonances below 40 keV with improved accuracy. On average, the capture widths were found to be 25% smaller than reported in earlier experiments. If complemented with the contribution by direct radiative capture, the derived Maxwellian averaged cross sections are consistent with activation data at kT=25 keV. The present results confirm the astrophysical implications for the s-process branching at 95Zr.
Published: 2011
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93. Neutron cross-sections for next generation reactors: New data from n_TOF

Author: C. Eleftheriadis, Carlos Guerrero, S. David, L. Tavora, G. Cortes, Alfredo Ferrari, R. Ferreira-Marques, Heinz Oberhummer, G. Tagliente, Yacine Kadi, P. Rullhusen, A. Herrera-Martinez, N. Patronis, L. Perrot, K. Wisshak, D. Villamarin, W.I. Furman, Masayuki Igashira, A. J. M. Plompen, J. Marganiec, S. Andriamonje, V. Chepel, S. Walter, Ralf Plag, S. Lukic, Marco T. Pigni, G. Rudolf, I. Lopes, F. Neves, C. A. Papachristodoulou, P. M. Milazzo, P. Cennini, M. Oshima, H. Wendler, Roberto Capote, E. Kossionides, P. Baumann, P.A. Assimakopoulos, J. Andrzejewski, James L. Cox, J. Salgado, G. Aerts, E. Chiaveri, Carlo Rubbia, P. F. Mastinu, D. Cano-Ott, V. Vlachoudis, M. Mosconi, F. Voss, A. Poch, L. Sarchiapone, I. Duran, F. Becvar, E. Griesmayer, H. Leeb, I. Dillman, C. Stephan, S. O'Brien, A. Carrillo de Albornoz, R. Terlizzi, M. C. Vicente, Marco Calviani, V. Konovalov, F. Käppeler, Nicola Colonna, G. Vannini, Corrie S. Moreau, R. C. Haight, P. E. Koehler, D. Karamanis, E. Jericha, S. Isaev, U. Abbondanno, C. Paradela, F. Gunsing, L. Audouin, E. Gonzalez-Romero, R. Vlastou, Michael Wiescher, A. Plukis, Cristian Massimi, E. Berthoumieux, F. Gramegna, M. Krtička, F. Calviño, T. Martinez, A. Lindote, Rene Reifarth, I. Savvidis, J. M. Quesada, L. Tassan-Got, A. Goverdovski, F. Alvarez-Velarde, Gerald Badurek, R. Dolfini, L. Ferrant, A. Ventura, P. Pavlopoulos, C. Lampoudis, H. Álvarez, A. Pavlik, J. L. Tain, C. Domingo-Pardo, Martin Heil, H. Frais-Koelbl, Manuel Lozano, J. Pancin, B. Haas, M. Dahlfors, P. Vaz, Aaron Couture, C. T. Papadopoulos, W. Dridi, L. Marques, Isabel S. Gonçalves, S. Marrone, M. Kerveno, K. Fujii, Alberto Mengoni, V. Ketlerov, C. Pretel, M. Rosetti, Thomas Rauscher, D. Karadimos, Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Institut de Physique Nucléaire d'Orsay (IPNO), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Département Recherches Subatomiques (DRS-IPHC), Institut Pluridisciplinaire Hubert Curien (IPHC), Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Pôle Universitaire Léonard de Vinci, Pôle Universitaire Léonard de Vinci (PULV), TOF, N. Colonna, U. Abbondanno, G. Aerts, H. Álvarez, F. Álvarez-Velarde, S. Andriamonje, J. Andrzejewski, P. Assimakopoulos, L. Audouin, G. Badurek, P. Baumann, F. Bečvář, F. Belloni, B. Berthier, E. Berthoumieux, M. Calviani, F. Calviño, D. Cano-Ott, R. Capote, C. Carrapiço, P. Cennini, V. Chepel, E. Chiaveri, G. Cortes, A. Couture, J. Cox, M. Dahlfors, S. David, I. Dillmann, C. Domingo-Pardo, W. Dridi, I. Duran, C. Eleftheriadis, M. Embid-Segura, L. Ferrant,†, A. Ferrari, R. Ferreira-Marques, K. Fujii, W. Furman, I. Goncalves, E. González-Romero, A. Goverdovski, F. Gramegna, E Griesmayer, C. Guerrero, F. Gunsing, B. Haas, R. Haight, M. Heil, A. Herrera-Martinez, M. Igashira, E. Jericha, F. Käppeler, Y. Kadi, D. Karadimos, D. Karamanis, V. Ketlerov, M. Kerveno, P. Koehler, V. Konovalov, E. Kossionides, M. Krtička, C. Lampoudis, H. Leeb, A. Lindote, I. Lopes, M. Lozano, S. Lukic, J. Marganiec, S. Marrone, T. Martínez, C. Massimi, P. Mastinu, A. Mengoni, P. M. Milazzo, C. Moreau, M. Mosconi, F. Neves, H. Oberhummer, S. O'Brien, J. Pancin, C. Papachristodoulou, C. Papadopoulos, C. Paradela, N. Patronis, A. Pavlik, P. Pavlopoulos, L. Perrot, M. T. Pigni, R. Plag, A. Plompen, A. Plukis, A. Poch, C. Pretel, J. Quesada, T. Rauscher, R. Reifarth, M. Rosetti, C. Rubbia, G. Rudolf, P. Rullhusen, J. Salgado, L. Sarchiapone, I. Savvidis, C. Stephan, G. Tagliente, J. L. Tain, L. Tassan-Got, L. Tavora, R. Terlizzi, G. Vannini, P. Vaz, A. Ventura, D. Villamarin, M. C. Vincente, V. Vlachoudis, R. Vlastou, F. Voss, S. Walter, M. Wiescher, K. Wisshak, Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Fission, Nuclear Theory, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 7. Clean energy, 01 natural sciences, Sensitivity and Specificity, Nuclear physics, Data acquisition, Neutron flux, Nuclear Reactors, 0103 physical sciences, Nuclear astrophysics, Neutron, 010306 general physics, Nuclear Experiment, Physics, Neutrons, Radiation, Large Hadron Collider, 010308 nuclear & particles physics, Reproducibility of Results, Equipment Design, Neutron Capture Therapy, NUCLEAR FISSION, Equipment Failure Analysis, 13. Climate action, Nuclear fission, Spallation Neutron Source
Abstract: 7th International Topical Meeting on Industrial Radiation and Radioisotope Measurement Application. Czech Tech univ, Prague, CZECH REPUBLIC. JUN 22-27, 2008, In 2002, an innovative neutron time-of-flight facility started operation at CERN: n_TOF. The main characteristics that make the new facility unique are the high instantaneous neutron flux, high resolution and wide energy range. Combined with state-of-the-art detectors and data acquisition system, these features have allowed to collect high accuracy neutron cross-section data on a variety of isotopes, many of which radioactive, of interest for Nuclear Astrophysics and for applications to advanced reactor technologies. A review of the most important results on capture and fission reactions obtained so far at n_TOF is presented, together with plans for new measurements related to nuclear industry.
Published: 2010
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94. Measurement of the neutron capture cross section of the s-only isotope 204Pb from 1 eV to 440 keV

Author: DOMINGO-PARDO, C., ABBONDANNO, U., AERTS, G., ÁLVAREZ-POL, H., ALVAREZ-VELARDE, F., ANDRIAMONJE, S., ANDRZEJEWSKI, J., ASSIMAKOPOULOS, P., AUDOUIN, L., BADUREK, G., BAUMANN, P., BE&#269VÁ, F., BERTHOUMIEUX, E., BISTERZO, S., CALVIÑO, F., CANO-OTT, D., CAPOTE, R., CARRAPIÇO, C., CENNINI, P., CHEPEL, V., CHIAVERI, E., COLONNA, N., CORTES, G., COUTURE, A., COX, J., DAHLFORS, M., DAVID, S., DILLMANN, I., DOLFINI, R., DRIDI, W., DURAN, I., ELEFTHERIADIS, C., EMBID-SEGURA, M., FERRANT, L., FERRARI, Anthony, FERREIRA-MARQUES, R., FITZPATRICK, L., FRAIS-KOELBL, H., FUJII, K., FURMAN, W., GALLINO, R., GONCALVES, I., GONZALEZ-ROMERO, E., GOVERDOVSKI, A., GRAMEGNA, F., GRIESMAYER, E., GUERRERO, C., GUNSING, F., HAAS, B., HAIGHT, R., HEIL, M., HERRERA-MARTINEZ, A., IGASHIRA, M., ISAEV, S., JERICHA, E., KADI, Y., KÄPPELER, F., KARAMANIS, D., KARADIMOS, D., KERVENO, M., KETLEROV, V., KOEHLER, P., KONOVALOV, V., KOSSIONIDES, E., KRTIČKA, M., LAMBOUDIS, C., LEEB, H., LINDOTE, A., LOPES, I., LOZANO, M., LUKIC, S., MARGANIEC, J., MARRONE, S., MASTINU, P., MENGONI, A., M. MILAZZO, P., MOREAU, C., MOSCONI, M., NEVES, F., OBERHUMMER, H., OSHIMA, M., O'BRIEN, S., PANCIN, J., PAPACHRISTODOULOU, C., PAPADOPOULOS, C., PARADELA, C., PATRONIS, N., PAVLIK, A., PAVLOPOULOS, P., PERROT, L., PLAG, R., PLOMPEN, A., PLUKIS, A., POCH, A., PRETEL, C., QUESADA, J., RAUSCHER, T., REIFARTH, R., ROSETTI, M., RUBBIA, C., RUDOLF, G., RULLHUSEN, P., SALGADO, J., SARCHIAPONE, L., SAVVIDIS, I., STEPHAN, C., TAGLIENTE, G., L. TAIN, J., TASSAN-GOT, L., TAVORA, L., TERLIZZI, R., VANNINI, G., VAZ, P., VENTURA, A., VILLAMARIN, D., VINCENTE, M.C., VLACHOUDIS, V., VLASTOU, R., VOSS, F., WALTER, S., WENDLER, H., WIESCHER, M., WISSHAK, K., C. Domingo-Pardo, U. Abbondanno, G. Aert, H. Álvarez-Pol, F. Alvarez-Velarde, S. Andriamonje, J. Andrzejewski, P. Assimakopoulo, L. Audouin, G. Badurek, P. Baumann, F. Becvár, E. Berthoumieux, S. Bisterzo, F. Calviño, D. Cano-Ott, R. Capote, C. Carrapiço, P. Cennini, V. Chepel, E. Chiaveri, N. Colonna, G. Corte, A. Couture, J. Cox, M. Dahlfor, S. David, I. Dillman, R. Dolfini, W. Dridi, I. Duran, C. Eleftheriadi, M. Embid-Segura, L. Ferrant, A. Ferrari, R. Ferreira-Marque, L. Fitzpatrick, H. Frais-Koelbl, K. Fujii, W. Furman, R. Gallino, I. Goncalve, E. Gonzalez-Romero, A. Goverdovski, F. Gramegna, E. Griesmayer, C. Guerrero, F. Gunsing, B. Haa, R. Haight, M. Heil, A. Herrera-Martinez, M. Igashira, S. Isaev, E. Jericha, Y. Kadi, F. Käppeler, D. Karamani, D. Karadimo, M. Kerveno, V. Ketlerov, P. Koehler, V. Konovalov, E. Kossionide, M. Krtička, C. Lamboudi, H. Leeb, A. Lindote, I. Lope, M. Lozano, S. Lukic, J. Marganiec, S. Marrone, P. Mastinu, A. Mengoni, P. M. Milazzo, C. Moreau, M. Mosconi, F. Neve, H. Oberhummer, M. Oshima, S. O'Brien, J. Pancin, C. Papachristodoulou, C. Papadopoulo, C. Paradela, N. Patroni, A. Pavlik, P. Pavlopoulo, L. Perrot, R. Plag, A. Plompen, A. Pluki, A. Poch, C. Pretel, J. Quesada, T. Rauscher, R. Reifarth, M. Rosetti, C. Rubbia, G. Rudolf, P. Rullhusen, J. Salgado, L. Sarchiapone, I. Savvidi, C. Stephan, G. Tagliente, J. L. Tain, L. Tassan-Got, L. Tavora, R. Terlizzi, G. Vannini, P. Vaz, A. Ventura, D. Villamarin, M. C. Vincente, V. Vlachoudi, R. Vlastou, F. Vo, S. Walter, H. Wendler, M. Wiescher, K. Wisshak(n_TOF Collaboration), Département d'Astrophysique, de physique des Particules, de physique Nucléaire et de l'Instrumentation Associée (DAPNIA), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Département Recherches Subatomiques (DRS-IPHC), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire d'Orsay (IPNO), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), nTOF, Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), and Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)
Subjects: 25.40.Lw, 27.80.+w, 97.10.Cv, Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, Nuclear Physics - Experiment, Nuclear Experiment (nucl-ex), [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], NEUTRON TIME OF FLIGHT, Nuclear Experiment, S-PROCESS, NEUTRON CAPTURE CROSS SECTION
Abstract: The neutron capture cross section of 204Pb has been measured at the CERN n_TOF installation with high resolution in the energy range from 1 eV to 440 keV. An R-matrix analysis of the resolved resonance region, between 1 eV and 100 keV, was carried out using the SAMMY code. In the interval between 100 keV and 440 keV we report the average capture cross section. The background in the entire neutron energy range could be reliably determined from the measurement of a 208Pb sample. Other systematic effects in this measurement could be investigated and precisely corrected by means of detailed Monte Carlo simulations. We obtain a Maxwellian average capture cross section for 204Pb at kT=30 keV of 79(3) mb, in agreement with previous experiments. However our cross section at kT=5 keV is about 35% larger than the values reported so far. The implications of the new cross section for the s-process abundance contributions in the Pb/Bi region are discussed., Comment: 8 pages, 3 figures, article submitted to Phys. Rev. C
Published: 2007
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95. Neutron capture cross section measurement of 151Sm at the CERN neutron time of flight facility (n_TOF).

Author: Abbondanno U, Aerts G, Alvarez-Velarde F, Alvarez-Pol H, Andriamonje S, Andrzejewski J, Badurek G, Baumann P, Becvár F, Benlliure J, Berthoumieux E, Calviño F, Cano-Ott D, Capote R, Cennini P, Chepel V, Chiaveri E, Colonna N, Cortes G, Cortina D, Couture A, Cox J, Dababneh S, Dahlfors M, David S, Dolfini R, Domingo-Pardo C, Duran I, Embid-Segura M, Ferrant L, Ferrari A, Ferreira-Marques R, Frais-Koelbl H, Furman W, Goncalves I, Gallino R, Gonzalez-Romero E, Goverdovski A, Gramegna F, Griesmayer E, Gunsing F, Haas B, Haight R, Heil M, Herrera-Martinez A, Isaev S, Jericha E, Käppeler F, Kadi Y, Karadimos D, Kerveno M, Ketlerov V, Koehler P, Konovalov V, Krticka M, Lamboudis C, Leeb H, Lindote A, Lopes I, Lozano M, Lukic S, Marganiec J, Marrone S, Martinez-Val J, Mastinu P, Mengoni A, Milazzo PM, Molina-Coballes A, Moreau C, Mosconi M, Neves F, Oberhummer H, O'Brien S, Pancin J, Papaevangelou T, Paradela C, Pavlik A, Pavlopoulos P, Perlado JM, Perrot L, Pignatari M, Plag R, Plompen A, Plukis A, Poch A, Policarpo A, Pretel C, Quesada J, Raman S, Rapp W, Rauscher T, Reifarth R, Rosetti M, Rubbia C, Rudolf G, Rullhusen P, Salgado J, Soares JC, Stephan C, Tagliente G, Tain J, Tassan-Got L, Tavora L, Terlizzi R, Vannini G, Vaz P, Ventura A, Villamarin D, Vincente MC, Vlachoudis V, Voss F, Wendler H, Wiescher M, and Wisshak K
Abstract: The151Sm(n,gamma)152Sm cross section has been measured at the spallation neutron facility n_TOF at CERN in the energy range from 1 eV to 1 MeV. The new facility combines excellent resolution in neutron time-of-flight, low repetition rates, and an unsurpassed instantaneous luminosity, resulting in rather favorable signal/background ratios. The 151Sm cross section is of importance for characterizing neutron capture nucleosynthesis in asymptotic giant branch stars. At a thermal energy of kT=30 keV the Maxwellian averaged cross section of this unstable isotope (t(1/2)=93 yr) was determined to be 3100+/-160 mb, significantly larger than theoretical predictions.
Published: 2004
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95 results on '"M. Embid-Segura"'

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