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411 results on '"Becvar, F"'

201. Resonance capture cross section of Pb-207

Author: Sarchiapone, L., Savvidis, I., Kerveno, M., Stephan, C., Tagliente, G., Koehler, P., Rubbia, C., Ketlerov, V., Rudolf, G., Kossionides, E., Rullhusen, P., Goncalves, I., Gallino, R., Ferreira-Marques, R., Fitzpatrick, L., Frais-Koelbl, H., Fujii, K., Eleftheriadis, C., Embid-Segura, M., Ferrant, L., Ferrari, A., Poch Parés, Agustí, Duran, I., Dridi, W., Dolfini, R., David, S., Dillmann, I., Cox, J., Dahlfors, M., Colonna, N., Couture, A., Chiaveri, E., Perrot, L., Cortés Rossell, Guillem Pere, Rosetti, M., Reifarth, R., Plompen, A., Plag, R., Quesada, J., Rauscher, T., Pretel Sánchez, Carme, Plukis, A., Pavlopoulos, P., Pavlik, A., Patronis, N., Mosconi, M., Pancin, J., Wisshak, K., Papachristodoulou, C., Wiescher, M., Papadopoulos, C., Paradela, C., The nTOF Collaborat, Oberhummer, H., Oshima, M., O'Brien, S., Wendler, H., Moreau, C., Milazzo, P.M., Neves, F., Voss, F., Cennini, P., Carrapico, C., Mastinu, P., Capote, R., Mengoni, A., Cano-Ott, D., Marganiec, J., Bisterzo, S., Konovalov, V., Marrone, S., Calviño Tavares, Francisco, Lozano, M., Berthoumieux, E., Lukic, S., Becvar, F., Baumann, P., Badurek, G., Chepel, V., Lopes, I., Salgado, J., Lindote, A., Leeb, H., Lamboudis, C., Krticka, M., Tain, J.L., Tassan-Got, L., Audouin, L., Isaev, S., Domingo-Pardo, C., Jericha, E., Abbondanno, U., Kadi, Y., Aerts, G., Kaeppeler, F., Álvarez-Pol, H., Karamanis, D., Álvarez-Velarde, F., Karadimos, D., Andriamonje, S., Andrzejewski, J., Assimakopoulos, P., Vlachoudis, V., Vlastou, R., Villamarin, D., Vincente, M.C., Igashira, M., Vaz, P., Herrera-Martinez, A., Ventura, A., Heil, M., Terlizzi, R., Haight, R., Vannini, G., Walter, S., Gramegna, F., Tavora, L., Griesmayer, E., Gonzalez-Romero, E., Goverdovski, A., Haas, B., Guerrero, C., Gunsing, F., Furman, W., 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: Estels -- Estructura, Física [Àrees temàtiques de la UPC], Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Radiative capture, Stars -- Structure, Radiació
Abstract: The radiative neutron capture cross section of 207Pb has been measured at the CERN neutron time of flight installation n TOF using the pulse height weighting technique in the resolved energy region. The measurement has been performed with an optimized setup of two C6D6 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 207Pb. 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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202. New measurement of neutron capture resonances in Bi-209

Author: Domingo-Pardo, C, Abbondanno, U, Aerts, G, Alvarez-Pol, H, Alvarez-Velarde, F, Andriamonje, S, Andrzejewski, J, Assimakopoulos, P, Audouin, L, Badurek, G, Baumann, P, Rudolf, G, Rullhusen, P, Salgado, J, Sarchiapone, L, Savvidis, I, Stephan, C, Tagliente, G, Tain, JL, Tassan-Got, L, Tavora, L, Becvar, F, Terlizzi, R, Vannini, G, Vaz, P, Ventura, A, Villamarin, D, Vincente, MC, Vlachoudis, V, Vlastou, R, Voss, F, Walter, S, Berthoumieux, E, Wendler, H, Wiescher, M, Wisshak, K, Calvino, F, Cano-Ott, D, Capote, R, de Albornoz, A Carrillo, Cennini, P, Chepel, V, Chiaveri, E, Colonna, N, Cortes, G, Couture, A, Cox, J, Dahlfors, M, David, Solomon Arulraj, Dillman, I, Dolfini, R, Dridi, W, Duran, I, Eleftheriadis, C, Embid-Segura, M, Ferrant, L, Ferrari, A, 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, Kappeler, F, Karamanis, D, Karadimos, D, Kerveno, M, Ketlerov, V, Koehler, P, Konovalov, V, Kossionides, E, Krticka, M, Lamboudis, C, Leeb, H, Lindote, A, Lopes, I, Lozano, M, Lukic, S, Marganiec, J, Marques, L, Marrone, S, Mastinu, P, Mengoni, A, Milazzo, PM, Moreau, C, Mosconi, M, Neves, F, Oberhummer, H, Oshima, M, O'Brien, S, Pancin, J, Papachristodoulou, C, Papadopoulos, C, Paradela, C, Patronis, Nikolaos, Pavlik, A, Pavlopoulos, P, Perrot, L, Plag, R, Plompen, A, Plukis, A, Poch, A, Pretel, C, Quesada, J, Rauscher, T, Reifarth, R, Rosetti, M, and Rubbia, C
Subjects: cross-section, stars, elements, facility, detector, abundances, system, Nuclear Experiment, galactic chemical evolution, s-process, chronometers
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% higher than the 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% of the solar bismuth abundance, resulting in an r-process residual of 81 +/- 3%. The present (n,gamma) cross-section measurement is also of relevance for the design of accelerator driven systems based on a liquid metal Pb/Bi spallation target. ispartof: Physical Review. C, Nuclear physics vol:74 issue:2 pages:1-10 status: published
Published: 2006

203. Resonance capture cross section of Pb-207

Author: Domingo-Pardo, C, Abbondanno, U, Aerts, Goele, Alvarez-Pol, H, Alvarez-Velarde, F, Andriamonje, S, Andrzejewski, J, Assimakopoulos, P, Audouin, L, Badurek, G, Baumann, P, Mosconi, M, Neves, F, Oberhummer, H, Oshima, M, O'Brien, S, Pancin, J, Papachristodoulou, C, Papadopoulos, C, Paradela, C, Patronis, Nikolaos, Rudolf, G, Pavlik, A, Pavlopoulos, P, Perrot, L, Plag, R, Plompen, A, Plukis, A, Poch, A, Pretel, C, Quesada, J, Rauscher, T, Rullhusen, P, Reifarth, R, Rosetti, M, Rubbia, C, Salgado, J, Sarchiapone, L, Savvidis, I, Stephan, C, Tagliente, G, Tain, JL, Tassan-Got, L, Tavora, L, Becvar, F, Terlizzi, R, Vannini, G, Vaz, P, Ventura, A, Villamarin, D, Vincente, MC, Vlachoudis, V, Vlastou, R, Voss, F, Walter, S, Berthoumieux, E, Wendler, H, Wiescher, M, Wisshak, K, Bisterzo, S, Calvino, F, Cano-Ott, D, Capote, R, Carrapico, C, Cennini, P, Chepel, V, Chiaveri, E, Colonna, N, Cortes, G, Couture, A, Cox, J, Dahlfors, M, David, S, Dillman, I, Dolfini, R, Dridi, W, Duran, I, Eleftheriadis, C, Embid-Segura, M, Ferrant, L, Ferrari, A, 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, Kaeppeler, F, Karamanis, D, Karadimos, D, Kerveno, M, Ketlerov, V, Koehler, P, Konovalov, V, Kossionides, E, Krticka, M, Lamboudis, C, Leeb, H, Lindote, A, Lopes, I, Lozano, M, Lukic, S, Marganiec, J, Marrone, S, Mastinu, P, Mengoni, A, Milazzo, PM, and Moreau, C
Subjects: elements, abundances, nucleosynthesis, giant branch stars, galactic chemical evolution, neutron-capture, solar, chronometers
Abstract: The radiative neutron capture cross section of Pb-207 has been measured at the CERN neutron time of flight installation n_TOF using the pulse height weighting technique in the resolved energy region. The measurement has been performed with an optimized setup of two C6D6 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 Pb-207. This corresponds to an r-process component of 23 +/- 8%, which is important for deriving the U/Th ages of metal poor halo stars. ispartof: Physical Review. C, Nuclear physics vol:74 issue:5 status: published
Published: 2006

204. The data acquisition system of the neutron time-of-flight facility n- TOF at CERN

Author: Abbondanno, U., Aerts, G., Alvarez-Velarde, F., Alvarez, H., Andriamonje, S., Andrzejewski, J., Badurek, G., Baumann, P., Becvar, F., Benlliure, J., Berthomieux, E., Betev, B., Calvino, P., Cano-Ott, D., Capote, R., Cennini, P., Chepel, V., Chiaveri, E., Colonna, N., Cortes, G., Cortina, D., Couture, A., Cox, J., Dababneh, S., David, S., Dolfini, R., Domingo-Pardo, C., Duran, I., Eleftheriadis, C., Embid-Segura, M., Ferrant, L., Ferrari, Anthony, Ferreira-Marques, R., Frais-Koelbl, H., Furman, W.I., Goncalves, I.F., 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., Kerveno, M., Ketlerov, V., Koehler, P.E., Konovalov, V., Kossionides, E., Krticka, M., Leeb, H., Lindote, A., Lopes, M.I., Lozano, M., Lukic, S., Marganiec, J., Marrone, S., Martinez-Val, J., Mastinu, P.F., Mengoni, A., Milazzo, P.M., 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, J.M., Perrot, L., Peskov, V., Plag, R., Plompen, A., Plukis, A., Poch, A., Policarpo, A., Pretel, C., Quesada, J.M., Rapp, W., Rauscher, T., Reifarth, R., Rosetti, M., Rubbia, C., Rudolf, G., Rulhusen, P., Salgado, J., Schäfer, E., Soares, J.C., Stephan, C., Tagliente, G., Tain, J.L., Tassan-Got, L., Tavora, L.M.N., Terlizzi, R., Vannini, G., Vaz, P., Ventura, A., Villamarin-Fernandez, D., Vincente-Vincente, M., Vlachoudis, V., Voss, F., Wendler, H., Wiescher, M., Wisshak, K., 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, U.Abbondanno, G. Aert, F.Alvarez, H.Alvarez, S.Andriamonje, J.Andrzejewski, G.Badurek, P.Baumann, F.Becvar, J. Benlliure, E. Berthomieux, B.Betev, 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, S.David, R.Dolfini, C.Domingo-Pardo, I.Duran, M.Embid-Segura, L.Ferrant, A.Ferrari, R.Ferreira-Marque, H.Frais-Koelbl, W.Furman, 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, Y.Kadi, F.Kappeler, M.Kerveno, V.Ketlerov, P.E.Koehlera, V.Konovalov, M.Krticka, H.Leeb, A.Lindote, M.I.Lope, M. Lozano, S.Lukic, J.Marganiec, S.Marrone, J.Martinez-Val, P.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, V.Peskov, R.Plag, A.Plompen, A.Pluki, A. Poch, A.Policarpo, C.Pretel, J.M.Quesada, W. Rapp, T. Rauscher, R. Reifarth, M. Rosetti, C. Rubbia, G. Rudolf, P. Rullhusena, J. Salgado, E. Schaeffer, 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, M. Wiescher, K. Wisshak., 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), 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), and TOF
Subjects: Nuclear and High Energy Physics, Memory buffer register, TheoryofComputation_COMPUTATIONBYABSTRACTDEVICES, Radiative capture, Computer interfaces, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, ComputingMethodologies_ARTIFICIALINTELLIGENCE, Radiació, Nuclear physics--Experiments, Nuclear magnetic resonance, Data acquisition, Neutron flux, 0103 physical sciences, Pulse shape analysis, Neutron, 010306 general physics, Instrumentation, Physics, Large Hadron Collider, Física [Àrees temàtiques de la UPC], 010308 nuclear & particles physics, business.industry, 25.40.Lw, 25.40.Ny, 29.50.+v, 29.85.+c, Neutron time-of-flight spectroscopy, TheoryofComputation_GENERAL, Dead time, Flash-ADC, Time of flight, Neutron capture, Física nuclear -- Experiments, ComputingMethodologies_PATTERNRECOGNITION, business, Computer hardware
Abstract: The n_TOF facility at CERN has been designed for the measurement of neutron capture, fission and (n; n) crosssections with high accuracy. This requires a flexible and—due to the high instantaneous neutron flux—almost dead time free data acquisition system. A scalable and versatile data solution has been designed based on 8-bit flash-ADCs with sampling rates up to 2GHz and 8 Mbyte memory buffer. The software is written in C and Cþþand is running on PCs equipped with RedHat Linux.
Published: 2005

205. New Measurement of the Capture Cross Section of Bismuth and Lead Isotopes

Author: Domingo-Pardo, C., Tain, J. L., Abbondanno, U., Aerts, G., Alvarez, H., Alvarez-Velarde, F., Andriamonje, S., Andrzejewski, J., Assimakopoulos, R., Audouin, L., Badurek, G., Baumann, P., Becvar, F., Benlliure, J., Berthoumieux, E., Calvino, F., Cano-Ott, D., Capote, R., Albornoz, A. C., Cennini, P., Chepel, V., Chiaveri, E., Colonna, N., Cortes, G., Cortina, D., Couture, A., Cox, J., David, S., Dolfini, R., Dridi, W., Duran, I., Embid-Segurao, M., Ferrant, L., Ferrari, A., Fitzpatrick, L., Ferreira-Marques, R., Frais-Koelbl, H., Fujii, K., Furman, W., Guerrero, C., Goncalves, I., Gallino, R., Gonzalez-Romero, E., Goverdovski, A., Gramegna, F., Griesmayer, E., Gunsing, F., Haas, B., Haight, R., Heil, M., Herrera-Martinez, A., Igashira, M., Isaev, S., Jericha, E., Kadi, Y., Kappeler, F., Karamanis, D., Karadimos, D., Kerveno, M., Ketlerov, V., Koehler, R., Konovalov, V., Kossionides, E., Krticka, M., Lamboudis, C., Leeb, H., Lindote, A., Lopes, I., Lozano, M., Lukic, S., Marganiec, J., Marques, L., Marrone, S., Mastinu, P., Mengoni, A., Milazzo, P. M., Moreau, C., Mosconi, M., Neves, F., Oberhummer, H., O Brien, S., Oshima, M., Pancin, J., Papachristodoulou, C., Papadopouloso, C., Paradela, C., Patronis, N., Pavlik, A., Pavlopoulos, P., Perrot, L., Plag, R., Plompen, A., Plukis, A., Poch, A., Carme Pretel, Quesada, J., Rauscher, T., Reifarth, R., Rosetti, M., Rubbia, C., Rudolf, G., Rullhusen, P., Salgado, J., Sarchiapone, L., Stephan, C., Tagliente, G., Tassan-Got, L., Tavora, L., Terlizzi, R., Vannini, G., Vaz, R., Ventura, A., Villamarin, D., Vincente, M. C., Vlachoudis, V., Vlastou, R., Voss, F., Wendle, H., Wiescher, M., Wisshak, K., Tof Collaboration, N., Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear, 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: Large Hadron Collider, Isotope, Detector, chemistry.chemical_element, 25.40.Lw, 27.80.+w, 020206 networking & telecommunications, 02 engineering and technology, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Weighting, Bismuth, Nuclear physics, Cross section (physics), chemistry, 0202 electrical engineering, electronic engineering, information engineering, 020201 artificial intelligence & image processing, Neutron, Sensitivity (control systems)
Abstract: PACS; International audience; All the stable lead isotopes and 209Bi have been recently measured at n_TOF (CERN) in the range from 1 eV up to 1 MeV, using an optimized experimental setup, A set of two homemade C6D6 detectors with carbon-fibre canning was designed to greatly reduce the sensitivity to scattered neutrons. Surrounding elements like the sample holder and the sample exchanger have been made also of carbon fibre.The pulse-height weighting technique has been used in order to determine the (n,gamma) cross sections. Concerning this technique, special care has been taken in the treatment of several sources of error leading to a total systematic uncertainty of less than 3%.Results on the analysed 209Bi and 207Pb capture data and a comparison with previous experiments and evaluations are presented.
Published: 2005

206. The (upcoming) digital real-time positron lifetime measurement of EPOS

Author: Krille, A., Krause-Rehberg, R., Becvar, F., and Brauer, G.
Abstract: not available
Published: 2005

207. Characterization of various crystalline structures at the SiO2/Si interface by positrons

Author: Brauer, G., Kuriplach, J., Anwand, W., Becvar, F., and Skorupa, W.
Abstract: The nature of the interface of the Si (001) surface with grown, native oxide is examined by a slow-positron beam equipped with coincidence Doppler broadening (DB). Measurements are combined with theoretical calculations of high-momentum DB profiles of Si, divacancy in Si, Brazilian quartz and the interface itself. From this comparison, the conclusion is drawn that an ordered structure exists at the interface. This structure resembles low quartz or a SiO2 structure with a lower density than low quartz.
Published: 2005

208. Evidence of a low quartz structure at the SiO2/Si interface from coincidence Doppler broadening spectroscopy

Author: Brauer, G., Becvar, F., Anwand, W., and Skorupa, W.
Subjects: slow-positron spectroscopy, silicon divacancy, silicon, SiO2/Si interface, coincidence Doppler broadening, Brazilian quartz
Abstract: Results from coincidence Doppler broadening measurements on various Si samples and Brazilian quartz having low quartz structure are presented with the aim to give further strong evidence for the existence of a low quartz structure, but not Si divacancies, at the SiO2/Si interface.
Published: 2005

209. Neutron capture cross section measurement of $^{151}$Sm 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., Becvar, F., Benlliure, J., Berthoumieux, E., Calvino, 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, Anthony, 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., Kardimos, 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, P.M., 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, J.M., 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., Ruhlhusen, P., Salgado, J., Soares, J.C., Stephan, C., Tagliente, G., Tain, J., Tassan-Got, L., Tavora, L., Terlizzi, R., Vannini, G., Vaz, P., Ventura, A., Villamarin, D., Vincente, M.C., Vlachoudis, V., Voss, F., Wendler, H., Wiescher, M., Wisshak, K., 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), 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), and TOF
Subjects: ComputingMethodologies_PATTERNRECOGNITION, TheoryofComputation_COMPUTATIONBYABSTRACTDEVICES, 25.40.L.w, 26.20.+f,27.70.+q,97.10.Cv, TheoryofComputation_GENERAL, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], ComputingMethodologies_ARTIFICIALINTELLIGENCE, Nuclear Physics
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

210. A low-mass neutron flux monitor for the n_TOF facility at CERN

Author: Mastinu, Pf, Abbondanno, U., Aerts, G., Alvarez, H., Andriamonje, S., Angelopoulos, A., Assimakopoulos, P., Bacri, Co, Badurek, G., Baumann, P., Becvar, F., Beer, H., Benlliure, J., Berthier, B., Berthomieux, E., Boffi, S., Borcea, C., Boscolo-Marchi, E., Bustreo, N., Calvino, P., Cano-Ott, D., Capote, R., Carlson, P., Cennini, P., Chepel, V., Chiaveri, E., Coceva, C., Colonna, N., Cortes, G., Cortina, D., Couture, A., Cox, J., Dababneh, S., Dahlfors, M., David, S., Dolfini, R., Domingo-Pardo, C., Duran, I., Eleftheriadis, C., Embid-Segura, M., Ferrant, L., Ferrari, A., Ferreira-Lourenco, L., Ferreira-Marques, R., Frais-Koelbl, H., Furman, Wi, Giomataris, Y., Goncalves, If, Gonzalez-Romero, E., Goverdovski, A., Gramegna, F., Griesmayer, E., Gunsing, F., Haight, R., Heil, M., Herrera-Martinez, A., Ioannides, Kg, Janeva, N., Jericha, E., Kappeler, F., Kadi, Y., Karamanis, D., Kelic, A., Ketlerov, V., Kitis, G., Koehler, Pe, Konovalov, V., Kossionides, E., Lacoste, V., Leeb, H., Lindote, A., Lopes, Mi, Loriggiola, M., Lozano, M., Lukic, S., Markov, S., Marigo, S., Marrone, S., Martinez-Val, J., Mengoni, A., Milazzo, Pm, Minguez, E., Molina-Coballes, A., Moreau, C., Neves, F., Oberhummer, H., O Brien, S., Pancin, J., Papaevangelou, T., Paradela, C., Pavlik, A., Pavlopoulos, P., Perez-Parra, A., Perlado, Jm, Perrot, L., Peskov, V., Plag, R., Plompen, A., Plukis, A., Poch, A., Policarpo, A., Pretel, C., Quesada, Jm, Radici, M., Raman, S., Rapp, W., Rauscher, T., Reifarth, R., Rejmund, F., Rosetti, M., Rubbia, C., Rudolf, G., Rullhusen, P., Salgado, J., Savvidis, E., Soares, Jc, Stephan, C., Tagliente, G., Tain, Jl, Tapia, C., Tassan-Goth, L., Tavora, Lmn, Terlizzi, R., Terrani, M., Tsangas, N., Vannini, G., Vaz, P., Ventura, A., Villamarin-Fernandez, D., Vincente-Vincente, M., Vlachoudis, V., Vlastou, R., Voss, F., Wendler, H., Wiescher, M., Wisshak, K., Zanini, L., and nTOF Collaboration
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 Li-6 deposit, placed in the neutron beam, and an array of Silicon detectors, placed outside the beam, for detecting the products of the Li-6(n, alpha)H-3 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. Brazilian Journal of Physics
Published: 2004

211. Measurement of the n(-)TOF beam profile with a micromegas detector

Author: Pancin, J., Abbondanno, U., Aerts, G., Alvarez, H., Andriamonje, S., Angelopoulos, A., Assimakopoulos, P., Bacri, C. O., Badurek, G., Baumann, P., Becvar, F., Plukis, A., Poch, A., Policarpo, A., Pretel, C., Quesada, J., Radici, M., Raman, S., Rapp, W., Reifarth, R., Rejmund, F., Beer, H., Rosetti, M., Rubbia, C., Rudolf, G., Rullhusen, P., Salgado, J., Savvidis, E., Stephan, C., Tagliente, G., Tain, J., Tapia, C., Benlliure, J., Tassan-Got, L., Tavora, L., Terlizzi, R., Terrani, M., Tsangas, N., Vannini, G., Vaz, P., Ventura, A., Villamarin-Fernandez, D., Vincente-Vincente, M., Berthier, B., Vlachoudis, V., Vlastou, R., Voss, F., Wendler, H., Wiescher, M., Wisshak, K., Zanini, L., Berthoumieux, E., Boffi, S., Borcea, C., Boscolo-Marchi, E., Bustreo, N., Calvino, F., Cano-ott, D., Capote, R., Carlson, P., Cennini, P., Chepel, V., Chiaveri, E., Colonna, N., Cortes, G., Cortina, D., Couture, A., Cox, J., Dababneh, S., Dahlfors, M., David, S., Delbart, A., Derre, J., Dolfini, R., Domingo, C., Duran-Escribano, I., Eleftheriadis, C., Embid-Segura, M., Ferrant, L., Ferrari, A., Ferreira-Lourenco, L., Ferreiramarques, R., Frais-Koelbl, H., Furman, W., Giomataris, Y., Goncalves, I., Gonzalez-Romero, E., Goverdovski, A., Gramegna, F., Griesmayer, E., Gunsing, F., Haight, R., Heil, M., Herrera-Martinez, A., Ioannides, K., Janeva, N., Jeanneau, F., Jericha, E., Kappeler, F., Kadi, Y., Karamanis, D., Kelic, A., Ketlerov, V., Kitis, G., Koehler, P., Konovalov, V., Kossionides, E., Lacoste, V., Leeb, H., Lindote, A., Lopes, I., Lozano, M., Lukic, S., Markov, S., Marrone, S., Martinez-Val, J., Mastinu, P., Mengoni, A., Milazzo, P., Minguez, E., Molina-Coballes, A., Moreau, C., Neves, F., Oberhummer, H., O'brien, S., Papadopoulos, I., Papavengelou, T., Paradela, C., Pavlik, A., Pavlopoulos, P., Perez-Parra, A., Perlado, J., Peskov, V., Perrot, L., Plag, R., and Plompen, A.
Subjects: micromegas, n(-)tof, beam profile, gaseous detector, neutron beam profiler
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 Li-6(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. (C) 2004 Elsevier B.V. All rights reserved. Nuclear Instruments & Methods in Physics Research Section a-Accelerators Spectrometers Detectors and Associated Equipment
Published: 2004

212. Measurement of the neutron capture cross section of $^{233}$U, $^{237}$Np, $^{240, 242}$Pu, $^{241, 243}$Am and $^{245}$Cm with a total absorption calorimeter at n_TOF

Author: Abbondanno, U, Aerts, G, Alvarez, F, Alvarez, H, Andriamonje, Samuel A, Andrzejewski, J, Angelopoulos, Angelos, Assimakopoulos, P A, Badurek, G, Baumann, P, Becvar, F, Beer, H, Benlliure, J, Bertomieux, E, Borcea, C, Calviño, F, Cano-Ott, D, Capote, R, Cennini, P, Chepel, V Yu, Chiaveri, Enrico, Colonna, N, Conrazier, P, Cortés, G, Cortina-Gil, D, Couture, A, Cox, J, Dababneh, S, David, S, Deberles, S, Dolfini, R, Domingo, C, Durán, I, Eleftheriadis, C, Embid-Segura, M, Ferrant, L, Ferreira, M R, Frais-Kölbl, H, Furman, W I, Gonçalves, I F, González-Romero, E M, Goverdovski, A A, Gramegna, F, Griesmayer, E, Gunsing, F, Haas, B, Haight, R C, Heil, M, Herrera-Martínez, A, Ioannides, K G, Isaev, S, Jericha, E, Kadi, Y, Käppeler, F K, Karadimos, D, Karamanis, D, Kelic, A, Kerveno, M, Ketlerov, V, Kitis, G, Köhler, P E, Konovalov, V, Kossionides, E, Kritcka, M, Lacoste, V, Lamboudis, C, Leeb, H, Lindote, A, Lopes, I M, Lorusso, G, Lozano, M, Lukic, S, Marganiec, J, Marrone, S, Mastinu, P, Mengoni, A, Milazzo, P M, Molina, A, Musacchio, F, Neves, F, Oberhummer, Heinz, O'Brien, S, Pancin, J, Papaevangelou, T, Paradela, C, Pavlik, A, Pavlopoulos, P, Perlado, M, Perrot, L, Plag, R, Plompen, A, Poch, A, Policarpo, Armando, Pretel, C, Quesda, J M, Rapp, W, Rauscher, T, Reifarth, R, Maurizio, M, Rubbia, Carlo, Rudolf, G, Rullhusen, P, Salgado, J, Savvidis, E, Soares, J C, Stéphan, C, Tagliente, G, Taín, J L, Tassan-Got, L, Tavora, L M N, Terlizzi, R, Tsangas, N, Vannini, G, Vaz, P, Ventura, A, Villamarín-Fernández, D, Vicente, M C, Vlachoudis, V, Vlastou, R, Voss, F, Wendler, H, Wiescherm, M, Wisshak, K, and Giacchini, M
Subjects: Detectors and Experimental Techniques
Published: 2003

213. Measurements of Fission Cross Sections of Actinides

Author: Stéphan, C, Cennini, P, Mengoni, A, Abbondanno, U, Aerts, G, Alvarez, H, Andriamonje, Samuel A, Angelopoulos, Angelos, Assimakopoulos, P A, Bacri, C O, Badurek, G, Baumann, P, Becvar, F, Beer, H, Benlliure, J, Berthier, B, Berthoumieux, E, Bertuzzi, J P, Blanc, D, Bonzano, R, Borcea, C, Bourquin, P, Bustreo, N, Buttkus, J, Calviño, F, Cano-Ott, D, Capote, R, Cappi, R, Carlier, J C, Carlson, P J, Chapuis, D, Chepel, V Yu, Chiaveri, Enrico, Chohan, V, Coceva, C, Colonna, N, Come, J P, Cortés, G, Cortina-Gil, D, Couture, A, Cox, J, Dababneh, S, Daems, G, Dahlfors, M, Dangendorf, V, David, S, Dobers, T, Dolfini, R, Domingo-Pardo, C, Duran-Escribano, I, Durieu, L, Eleftheriadis, C, Embid-Segura, M, Ferrari, A, Ferreira-Lourenço, L, Ferreira-Marques, R, Flament, C, Frais-Kölbl, H, Furman, W I, Gaidon, M, Gascon, J, Gasser, D, Giomataris, Ioanis, Giovannozzi, Massimo, Gonçalves, I F, González, E, Goulas, I, Goverdovski, A A, Gramegna, F, Griesmayer, E, Gunsing, F, Haight, R C, Heil, M, Herrera-Martínez, A, Ioannides, K G, Janeva, N, Jericha, E, Kadi, Y, Käppeler, F K, Karamanis, D, Kerveno, V, Ketlerov, V, Kitis, G, Köhler, P E, Konovalov, V, Kossionides, E, Kowalik, G, Kühnl-Kinel, J, Lacoste, V, Lacroix, Jean Michel, Leeb, H, Lindote, A, Lopes, I M, Lozano, M, Lukic, S, Magnin, R, Mahner, E, Marie, F, Markov, S, Marrone, S, Martínez-Val, J M, Mastinu, P, Messerli, R, Métral, G, Milazzo, P M, Minguez, E, Molina-Coballes, A, Monteiro, J, Moreau, C, Neves, F, Nicquevert, B, Nolte, R, Oberhummer, Heinz, O'Brien, S, Pancin, J, Paradela-Dobarro, C, Pavlik, A, Pavlopoulos, P, Pérez-Parra, A, Perlado, J M, Perrot, L, Peskov, Vladimir, Plag, R, Plompen, A, Plukis, A, Poch, A, Poehler, M, Policarpo, Armando, Pretel, C, Quesada, J M, Radermacher, J P, Raich, U, Raman, S, Rapp, W, Rauscher, T, Reifarth, R, Rejmund, F, Riunaud, J P, Rollinger, G, Rosetti, M, Rubbia, Carlo, Rudolf, G, Rullhusen, P, Saldaña, F, Salgado, J, Savvidis, E, Silari, Marco, Soares, J C, Tagliente, G, Taín, J L, Tapia, C, Tassan-Got, L, Tavora, L M N, Terlizzi, R, Terrani, M, Tsangas, N, Van Baaren, W, Vannini, G, Vaz, P, Ventura, A, Villamarín-Fernández, D, Vincente-Vincente, M, Vlachoudis, V, Vlastou, R, Voss, F, Weierganz, M, Wendler, H, Wiescher, M, Wisshak, K, Zanini, L, and Zanolli, M
Subjects: Detectors and Experimental Techniques
Published: 2003

214. A new CVD diamond mosaic-detector for (n, ) cross-section measurements at the n_TOF experiment at CERN

Author: 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, Weiss, Christina, Griesmayer, E., Guerrero, C., Altstadt, S., Andrzejewski, J., Audouin, L., Badurek, G., Barbagallo, M., Bécares, V., Becvar, F., Calviño Tavares, Francisco, Cortés Rossell, Guillem Pere, Riego Pérez, Albert, 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, Weiss, Christina, Griesmayer, E., Guerrero, C., Altstadt, S., Andrzejewski, J., Audouin, L., Badurek, G., Barbagallo, M., Bécares, V., Becvar, F., Calviño Tavares, Francisco, Cortés Rossell, Guillem Pere, and Riego Pérez, Albert
Abstract: At then_TOFexperimentatCERNadedicatedsingle-crystalchemicalvapordeposition(sCVD)Diamond Mosaic-Detectorhasbeendevelopedfor(n,α) cross-sectionmeasurements.Thedetector,characterized by anexcellenttimeandenergyresolution,consistsofanarrayof9sCVDdiamonddiodes.Thedetector has beencharacterizedandacross-sectionmeasurementhasbeenperformedforthe 59Ni(n,α)56Fe reaction in2012.Thecharacteristicsofthedetector,itsperformanceandthepromisingpreliminary results oftheexperimentarepresented., Postprint (published version)
Published: 2013

215. Neutron induced reactions for the s process, and the case of Fe and Ni isotopes

Author: Altstadt, S, Audouin, L, Barbagallo, M, Becvar, F, Billowes, J., Dillmann, I., Guerrero, C, Heil, M., Lederer, C, Schumann, D., Wallner, Anton, Altstadt, S, Audouin, L, Barbagallo, M, Becvar, F, Billowes, J., Dillmann, I., Guerrero, C, Heil, M., Lederer, C, Schumann, D., and Wallner, Anton
Abstract: Neutron capture cross sections are the key nuclear physics input to understand nucleosynthesis of the slow neutron capture process (s process). At the neutron time of flight facility n-TOF at CERN neutron capture cross sections of astrophysical interest a
Published: 2013

216. High-accuracy determination of the neutron flux at n TOF

Author: 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, Barbagallo, M., Guerrero, C., Tsinganis, A., Tarrío, D., Altstadt, S., Andriamonje, S., Andrzejewski, J., Audouin, L., Bécares, V., Becvar, F., Belloni, Fabio, Calviño Tavares, Francisco, Cortés Rossell, Guillem Pere, Gómez Hornillos, María Belén, Hernández-Prieto, A., Riego Pérez, Albert, 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, Barbagallo, M., Guerrero, C., Tsinganis, A., Tarrío, D., Altstadt, S., Andriamonje, S., Andrzejewski, J., Audouin, L., Bécares, V., Becvar, F., Belloni, Fabio, Calviño Tavares, Francisco, Cortés Rossell, Guillem Pere, Gómez Hornillos, María Belén, Hernández-Prieto, A., and Riego Pérez, Albert
Abstract: The neutron flux of the n TOF facility at CERN was measured, after installation of the new spallation target, with four different systems based on three neutron-converting reactions, which represent accepted cross sections standards in different energy regions. A careful comparison and combination of the different measurements allowed us to reach an unprecedented accuracy on the energy dependence of the neutron flux in the very wide range (thermal to 1 GeV) that characterizes the n TOF neutron beam. This is a pre-requisite for the high accuracy of cross section measurements at n TOF. An unexpected anomaly in the neutron-induced fission cross section of 235U is observed in the energy region between 10 and 30 keV, hinting at a possible overestimation of this important cross section, well above currently assigned uncertainties., Postprint (published version)
Published: 2013

217. Neutron Capture Cross Sections of Zr and La: Probing Neutron Exposure and Neutron Flux in Red Giant Stars

Author: Käppeler, F, Pavlopoulos, P, Mengoni, A, Abbondanno, U, Aerts, G, Alvarez, H, Andriamonje, Samuel A, Angelopoulos, Angelos, Assimakopoulos, P A, Bacri, C O, Badurek, G, Baumann, P, Becvar, F, Beer, H, Benlliure, J, Berthier, B, Berthoumieux, E, Calviño, F, Cano-Ott, D, Capote, R, Carlson, P J, Cennini, P, Chepel, V Yu, Chiaveri, Enrico, Colonna, N, Cortés, G, Cortina-Gil, D, Couture, A, Dababneh, S, Dahlfors, M, David, S, Dolfini, R, Domingo, C, Durán-Escribano, I, Eleftheriadis, C, Embid-Segura, M, Ferrant, L, Ferrari, A, Ferreira-Lourenço, L, Ferreira-Marques, R, Frais-Kölbl, H, Furman, W I, Giomataris, Ioanis, Gonçalves, I, González-Romero, E M, Goverdovski, A A, Gramegna, F, Griesmayer, E, Gunsing, F, Haight, R C, Heil, M, Herrera-Martínez, A, Igashira, M, Ioannides, K G, Javena, N, Jericha, E, Kadi, Y, Karamanis, D, Ketlerov, V, Kitis, G, Köhler, P E, Konovalov, V, Kossionides, E, Lacoste, V, Leeb, H, Lindote, A, Lopes, I, Lozano, M, Lukic, S, Marie, F, Markov, S, Marrone, S, Martínez-Val, J M, Mastinu, P, Milazzo, P M, Minguez, E, Molina-Coballes, A, Moreau, C, Nagai, Y, Neves, F, Oberhummer, Heinz, O'Brien, S, Ohsaki, T, Pancin, J, Paradela, C, Pavlik, A, Pérez-Parra, A, Perlado, J, Perrot, L, Peskov, Vladimir, Plag, R, Plompen, A, Plukis, A, Poch, A, Policarpo, Armando, Pretel, C, Quesada, J, Raman, S, Rapp, W, Reifarth, R, Rejmund, F, Rosetti, M, Rubbia, Carlo, Rudolf, G, Rullhusen, P, Salgado, J, Savvidis, E, Shima, T, Soares, J, Stéphan, C, Tagliente, G, Takahisa, K, Taín, J L, Tapia, C, Tassan-Got, L, Tavora, L M N, Terrani, M, Tsangas, N, Vannini, G, Vaz, P, Ventura, A, Villamarín-Fernández, D, Vincente-Vincente, M, Vlachoudis, V, Vlastou, R, Voss, F, Wendler, H, Wiescher, M, Wisshak, K, and Zanini, L
Subjects: Detectors and Experimental Techniques
Published: 2002

218. Ni-62(n,gamma) and Ni-63(n,gamma) cross sections measured at the n_TOF facility at CERN

Author: Lederer C., Massimi C., Berthoumieux E., Colonna N., Dressler R., Guerrero C., Gunsing F., Kaeppeler F., Kivel N., Pignatari M., Reifarth R., Schumann D., Wallner A., Altstadt S., Andriamonje S., Andrzejewski J., Audouin L., Barbagallo M., Becares V., Becvar F., Belloni F., Berthier B., Billowes J., Boccone V., and Bosnar D.
Published: 2014

219. Present status and future programs of the n-TOF experiment

Author: Chiaveri, E, Calviani, M, Vlachoudis, V, Weiss, C., Andriamonje, S., Andrzejewski, J., Audouin, L, Avrigeanu, V, Barbagallo, M, Becares, V, Becvar, F, Belloni, F, Berthoumieux, E., Billowes, J., Boccone, V, Brugger, M, Calvino, F, Cano-Ott, D., Carrapico, C, Cerutti, F, Chin, M, Colonna, N., Cortes, G, Cortes-Giraldo, M A, Diakaki, M, Dillmann, I., Domingo-Pardo, C, Duran, I, Dzysiuk, N, Eleftheriadis, C, Fernandez-Ordonez, M., Ferrari, A, Guerrero, C, Heil, M., Lederer, C, Milazzo, P M, Tsinganis, A., Wallner, Anton, Chiaveri, E, Calviani, M, Vlachoudis, V, Weiss, C., Andriamonje, S., Andrzejewski, J., Audouin, L, Avrigeanu, V, Barbagallo, M, Becares, V, Becvar, F, Belloni, F, Berthoumieux, E., Billowes, J., Boccone, V, Brugger, M, Calvino, F, Cano-Ott, D., Carrapico, C, Cerutti, F, Chin, M, Colonna, N., Cortes, G, Cortes-Giraldo, M A, Diakaki, M, Dillmann, I., Domingo-Pardo, C, Duran, I, Dzysiuk, N, Eleftheriadis, C, Fernandez-Ordonez, M., Ferrari, A, Guerrero, C, Heil, M., Lederer, C, Milazzo, P M, Tsinganis, A., and Wallner, Anton
Abstract: The neutron time-of-flight facility n-TOF at CERN, Switzerland, operational since 2001, delivers neutrons using the Proton Synchrotron (PS) 20 GeV/c proton beam impinging on a lead spallation target. The facility combines a very high instantaneous neutron flux, an excellent time of flight resolution due to the distance between the experimental area and the production target (185 meters), a low intrinsic background and a wide range of neutron energies, from thermal to GeV neutrons. These characteristics provide a unique possibility to perform neutron-induced capture and fission cross-section measurements for applications in nuclear astrophysics and in nuclear reactor technology. The most relevant measurements performed up to now and foreseen for the future will be presented in this contribution. The overall efficiency of the experimental program and the range of possible measurements achievable with the construction of a second experimental area (EAR-2), vertically located 20 m on top of the n-TOF spallation target, might offer a substantial improvement in measurement sensitivities. A feasibility study of the possible realisation of the installation extension will be also presented.
Published: 2012

220. The stellar (n,γ) cross section of ¹⁸⁰sup(m)Ta, the rarest stable isotope in nature

Author: Wisshak, K., Voss, F., Arlandini, C., Käppeler, F., Heil, M., Reifarth, R., Krticka, M., and Becvar, F.
Subjects: Physics, ddc:530
Published: 2000
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221. Neutron measurements for advanced nuclear systems: The n-TOF project at CERN

Author: Colonna, N., Andriamonje, S., Andrzejewski, J., Audouin, L, Barbagallo, M, Becares, V, Becvar, F, Heil, M., Lederer, C, Milazzo, P M, Wallner, Anton, Brugger, M, Calviani, M, Cerutti, F, Chiaveri, E, Chin, M, Domingo-Pardo, C, Duran, I, Mosconi, M., Nolte, R., Vlachoudis, V, Colonna, N., Andriamonje, S., Andrzejewski, J., Audouin, L, Barbagallo, M, Becares, V, Becvar, F, Heil, M., Lederer, C, Milazzo, P M, Wallner, Anton, Brugger, M, Calviani, M, Cerutti, F, Chiaveri, E, Chin, M, Domingo-Pardo, C, Duran, I, Mosconi, M., Nolte, R., and Vlachoudis, V
Abstract: A few years ago, the neutron time-of-flight facility n-TOF was built at CERN to address some of the urgent needs of high-accuracy nuclear data for Accelerator Driven Systems and other advanced nuclear energy systems, as well as for nuclear astrophysics and fundamental nuclear physics. Thanks to the characteristics of the neutron beam, and to state-of-the-art detection and acquisition systems, high quality neutron cross-section data have been obtained for a variety of isotopes, many of which radioactive. Following an important upgrade of the spallation target and of the experimental area, a new measurement campaign has started last year. After a brief review of the most important results obtained so far at n-TOF, the new features of the facility are presented, together with the first results on the commissioning of the neutron beam. The plans for future measurements, in particular related to nuclear technology are finally discussed.
Published: 2011

222. The measurement of the Pb-206(n,gamma) cross section and stellar implications

Author: 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, Vaz, P., Ventura, A., Lozano, M., Villamarin, D., Vincente, M.C., Marganiec, J., Tassan-Got, L., Lukic, S., Tavora, L., Massimi, C., Terlizzi, R., Pavlik, A., Patronis, N., Perrot, L., Pavlopoulos, P., Cennini, P., Carrapico, C., Papadopoulos, C., Capote, R., Paradela, C., Cano-Ott, Daniel, Calviño Tavares, Francisco, Pancin, J., Calviani, M., Papachristodoulou, C., Oberhummer, H., Bisterzo, S., O'Brien, S., Berthoumieux, E., Becvar, F., Baumann, P., Chepel, V., Neves, F., Mosconi, M., Marrone, S., Milazzo, P.M., Mengoni, A., Mastinu, P., Vannini, G., Vlachoudis, V., Vlastou, R., Badurek, G., Kossionides, E., Domingo-Pardo, C., Krticka, M., Abbondanno, U., Lamboudis, C., Aerts, G., Leeb, H., Álvarez-Velarde, F., Lindote, A., Andriamonje, S., Lopes, I., Andrzejewski, J., Assimakopoulos, P., Audouin, L., Koehler, P., Wisshak, K., Kerveno, M., Karamanis, D., Walter, S., Karadimos, D., Wiescher, M., Herrera-Martinez, A., Voss, F., Igashira, M., Haight, R., Heil, M., Kaeppeler, F., Jericha, E., Kadi, Y., Guerrero, C., Haas, B., Gunsing, F., Gallino, R., Goncalves, I., Gonzalez-Romero, E., Gramegna, F., Ferrari, A., Ferreira-Marques, R., Fujii, K, Furman, W., Ferrant, L., Embid-Segura, M., Eleftheriadis, C., Dridi, W., Duran, I., David, S., Dillmann, I., Couture, A., Cox, J., Colonna, N., Cortés Rossell, Guillem Pere, Tain, J.L., Tagliente, G., Rullhusen, P., Salgado, J., Rubbia, C., Rudolf, G., Savvidis, I., Stephan, C., Santos, C., Sarchiapone, L., Reifarth, R., Rauscher, T., Quesada, J., Pretel Sánchez, Carme, Plompen, A., Alvarez, A., Plukis, A., Pigni, M.T., Plag, R., Poch Parés, Agustí, 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, Vaz, P., Ventura, A., Lozano, M., Villamarin, D., Vincente, M.C., Marganiec, J., Tassan-Got, L., Lukic, S., Tavora, L., Massimi, C., Terlizzi, R., Pavlik, A., Patronis, N., Perrot, L., Pavlopoulos, P., Cennini, P., Carrapico, C., Papadopoulos, C., Capote, R., Paradela, C., Cano-Ott, Daniel, Calviño Tavares, Francisco, Pancin, J., Calviani, M., Papachristodoulou, C., Oberhummer, H., Bisterzo, S., O'Brien, S., Berthoumieux, E., Becvar, F., Baumann, P., Chepel, V., Neves, F., Mosconi, M., Marrone, S., Milazzo, P.M., Mengoni, A., Mastinu, P., Vannini, G., Vlachoudis, V., Vlastou, R., Badurek, G., Kossionides, E., Domingo-Pardo, C., Krticka, M., Abbondanno, U., Lamboudis, C., Aerts, G., Leeb, H., Álvarez-Velarde, F., Lindote, A., Andriamonje, S., Lopes, I., Andrzejewski, J., Assimakopoulos, P., Audouin, L., Koehler, P., Wisshak, K., Kerveno, M., Karamanis, D., Walter, S., Karadimos, D., Wiescher, M., Herrera-Martinez, A., Voss, F., Igashira, M., Haight, R., Heil, M., Kaeppeler, F., Jericha, E., Kadi, Y., Guerrero, C., Haas, B., Gunsing, F., Gallino, R., Goncalves, I., Gonzalez-Romero, E., Gramegna, F., Ferrari, A., Ferreira-Marques, R., Fujii, K, Furman, W., Ferrant, L., Embid-Segura, M., Eleftheriadis, C., Dridi, W., Duran, I., David, S., Dillmann, I., Couture, A., Cox, J., Colonna, N., Cortés Rossell, Guillem Pere, Tain, J.L., Tagliente, G., Rullhusen, P., Salgado, J., Rubbia, C., Rudolf, G., Savvidis, I., Stephan, C., Santos, C., Sarchiapone, L., Reifarth, R., Rauscher, T., Quesada, J., Pretel Sánchez, Carme, Plompen, A., Alvarez, A., Plukis, A., Pigni, M.T., Plag, R., and Poch Parés, Agustí
Abstract: The neutron capture cross section of 206Pb has been measured at the CERN n TOF spectrometer using a setup of two C6D6 detectors. In the energy interval from 1 eV to 600 keV the cross section is dominated by resonances, which were analyzed via the R-matrix analysis code SAMMY. In the relevant energy ranges for stellar nucleosynthesis, i.e., at thermal energies of kT = 8 keV and kT = 23 keV, the present Maxwellian average cross section differs by 20% and 9% from the recommended values of Bao et al respectively. From the new cross section the s-abundance of 206Pb could be reliably determined as 70(4)%. This result is of importance in order to test and constrain r-process abundance calculations in the actinide region, because the r-process portion of 206Pb is dominated by α-back decays of short-lived transbismuth isotopes., Peer Reviewed, Postprint (published version)
Published: 2008

223. Nuclear physics for the Re/Os clock

Author: 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, Ventura, A., Villamarin, D., Lamboudis, C., Vincente, M.C., Vlachoudis, V., Lindote, A., Tassan-Got, L., Leeb, H., Tavora, L., Lozano, M., Vannini, G., Carrapico, C., Cennini, P., Cano-Ott, D., Capote, R., Becvar, F., Calviani, M., Tain, J.L., Tagliente, G., Rullhusen, P., Salgado, J., Stephan, C., Rubbia, C., Rudolf, G., Savvidis, I., Santos, C., Sarchiapone, L., Reifarth, R., Rauscher, T., Quesada, J., Plompen, A., Poch Parés, Agustí, Plukis, A., Pretel Sánchez, Carme, Paradela, C., Pavlopoulos, P., Perrot, L., Pigni, M.T., Papadopoulos, C., Pavlik, A., Patronis, N., Baumann, P., Badurek, G., Pancin, J., Audouin, L., Papachristodoulou, C., Assimakopoulos, P., Andriamonje, S., Oberhummer, H., Andrzejewski, J., O'Brien, S., Milazzo, P.M., Álvarez-Velarde, H., Neves, F., Álvarez, H., Abbondanno, U., Gallino, R., Calviño Tavares, Francisco, Mastinu, P., Massimi, C., Lopes, I., Marrone, S., Marganiec, J., Lukic, S., Vaz, P., Vlastou, R., Voss, F., Terlizzi, R., Karadimos, D., Mosconi, M., Karamanis, D., Heil, M., Kerveno, M., Kappeler, F, Koehler, P., Plag, R., Kossionides, E., Mengoni, A., Krticka, M., Fujii, K., Domingo-Pardo, C., Aerts, G., Kadi, Y., The n_TOF Collaboration, Jericha, E., Igashira, M., Wiescher, M., Herrera-Martinez, A., Wisshak, K., Gramegna, F., Walter, S., Guerrero, C., Goncalves, I., Gonzalez-Romero, E., Haight, R., Gunsing, F., Haas, B., Ferrari, A., Furman, W., Ferreira-Marques, R., Duran, I., Eleftheriadis, C., Embid-Segura, M., Ferrant, L., Dahlfors, M., David, S., Dillmann, I., Dridi, W., Cox, J., Couture, A., Cortés Rossell, Guillem Pere, Chepel, V., Colonna, N., 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, Ventura, A., Villamarin, D., Lamboudis, C., Vincente, M.C., Vlachoudis, V., Lindote, A., Tassan-Got, L., Leeb, H., Tavora, L., Lozano, M., Vannini, G., Carrapico, C., Cennini, P., Cano-Ott, D., Capote, R., Becvar, F., Calviani, M., Tain, J.L., Tagliente, G., Rullhusen, P., Salgado, J., Stephan, C., Rubbia, C., Rudolf, G., Savvidis, I., Santos, C., Sarchiapone, L., Reifarth, R., Rauscher, T., Quesada, J., Plompen, A., Poch Parés, Agustí, Plukis, A., Pretel Sánchez, Carme, Paradela, C., Pavlopoulos, P., Perrot, L., Pigni, M.T., Papadopoulos, C., Pavlik, A., Patronis, N., Baumann, P., Badurek, G., Pancin, J., Audouin, L., Papachristodoulou, C., Assimakopoulos, P., Andriamonje, S., Oberhummer, H., Andrzejewski, J., O'Brien, S., Milazzo, P.M., Álvarez-Velarde, H., Neves, F., Álvarez, H., Abbondanno, U., Gallino, R., Calviño Tavares, Francisco, Mastinu, P., Massimi, C., Lopes, I., Marrone, S., Marganiec, J., Lukic, S., Vaz, P., Vlastou, R., Voss, F., Terlizzi, R., Karadimos, D., Mosconi, M., Karamanis, D., Heil, M., Kerveno, M., Kappeler, F, Koehler, P., Plag, R., Kossionides, E., Mengoni, A., Krticka, M., Fujii, K., Domingo-Pardo, C., Aerts, G., Kadi, Y., The n_TOF Collaboration, Jericha, E., Igashira, M., Wiescher, M., Herrera-Martinez, A., Wisshak, K., Gramegna, F., Walter, S., Guerrero, C., Goncalves, I., Gonzalez-Romero, E., Haight, R., Gunsing, F., Haas, B., Ferrari, A., Furman, W., Ferreira-Marques, R., Duran, I., Eleftheriadis, C., Embid-Segura, M., Ferrant, L., Dahlfors, M., David, S., Dillmann, I., Dridi, W., Cox, J., Couture, A., Cortés Rossell, Guillem Pere, Chepel, V., and Colonna, N.
Abstract: Dating the age of the universe by the β-decay of 187Re (t1/2 = 41.2 Gyr) requires the accurate assessment of the s-process reaction flow. The daughter nucleus 187Os as well as its immediate s-only neighbor 186Os are shielded from the r-process. Therefore, the radiogenic contribution to 187Os can be derived via the local approximation of the s-process, which is well justified in this mass region: ( σ Ns)187 = ( σ Ns)186. Accordingly, accurate Maxwellianaveraged (n, γ ) cross sections have to be known for 186Os and 187Os over the full range of s-process temperatures. Because 187Os has low-lying excited states, which are significantly populated during the s-process, neutron captures on these excited states have to be properly taken into account. The input for the corresponding Hauser–Feshbach calculations can be constrained by deriving the strength functions from a detailed resonance analysis of the measured (n, γ ) cross sections as well as by an additional measurement of the inelastic scattering cross section for the first exited level, which dominates the competition between the capture and scattering channels. This contribution reports on measurements of the neutron capture cross sections of 186Os, 187Os and 188Os from the eV region to 1MeV at the CERN/n TOF facility and of the inelastic scattering cross section of 187Os around 30 keV at the Karlsruhe 3.7 MV Van de Graaff accelerator. Based on these results and on a detailed resonance analysis, improved Maxwellian-averaged cross sections were obtained for thermal energies between 5 keV and 100 keV. The implications of these results for the Re/Os clock are discussed., Peer Reviewed, Postprint (published version)
Published: 2008

224. Digital positron lifetime spectroscopy at EPOS

Author: Krille, A., Krause-Rehberg, R., Jungmann, M., Becvar, F., Brauer, G., Krille, A., Krause-Rehberg, R., Jungmann, M., Becvar, F., and Brauer, G.
Abstract: As the digital equipment to measure positron lifetimes gets cheaper and more widely used, it is decided that EPOS, the ELBE positron source will sample the signals from the photomultipliers directly and evaluate it online or offline by digital means. Still using isotope sources, the EPOS lifetime spectrometer results in a timing resolution of around 170 ps (with Co-60), which compares good to analog equipment. A distinct improvement is expected when a coincidence setup will be used at ELBE. However, also the software needs further improvement: while one of the goals is of course to achieve the best time resolution, there is also the aspect of runtime and expandability. Results of evaluations will be presented and compared with results from other groups.
Published: 2008

225. THE Am-243 NEUTRON CAPTURE MEASUREMENT AT THE n_TOF FACILITY

Author: MENDOZA, E., primary, CANO-OTT, D., additional, GUERRERO, C., additional, ÁLVAREZ-VELARDE, F., additional, GARCÍA-RÍOS, A., additional, GONZÁLEZ-ROMERO, E., additional, MARTÍNEZ, T., additional, VILLAMARIN, D., additional, KADI, Y., additional, COLONNA, N., additional, MARRONE, S., additional, MEAZE, M. H., additional, TAGLIENTE, G., additional, TERLIZZI, R., additional, ABBONDANNO, U., additional, BELLONI, F., additional, FUJII, K., additional, MILAZZO, P. M., additional, MOREAU, C., additional, ANDRIAMONJE, S., additional, CALVIANI, M., additional, VLACHOUDIS, V., additional, CHIAVERI, E., additional, ANDRZEJEWSKI, J., additional, MARGANIEC, J., additional, ASSIMAKOPOULOS, P., additional, KARADIMOS, D., additional, KARAMANIS, D., additional, PAPACHRISTODOULOU, C., additional, PATRONIS, N., additional, AUDOUIN, L., additional, DAVID, S., additional, FERRANT, L., additional, ISAEV, S., additional, STEPHAN, C., additional, TASSAN-GOT, L., additional, BADUREK, G., additional, JERICHA, E., additional, LEEB, H., additional, OBERHUMMER, H., additional, PIGNI, M. T., additional, POCH, A., additional, BAUMANN, P., additional, KERVENO, M., additional, LUKIC, S., additional, RUDOLF, G., additional, BECVAR, F., additional, KRTICKA, M., additional, CALVINO, F., additional, CAPOTE, R., additional, FRAIS-KOELBL, H., additional, GRIESMAYER, E., additional, MENGONI, A., additional, LOZANO, M., additional, QUESADA, J. M., additional, CARRILLO DE ALBORNOZ, A., additional, TAVORA, L., additional, MARQUES, L., additional, SALGADO, J., additional, VAZ, P., additional, CENNINI, P., additional, DAHLFORS, M., additional, FERRARI, A., additional, GRAMEGNA, F., additional, HERRERA-MARTINEZ, A., additional, MASTINU, P., additional, PRAENA, J., additional, SARCHIAPONE, L., additional, WENDLER, H., additional, CHEPEL, V., additional, FERREIRA-MARQUES, R., additional, GONCALVES, I., additional, LINDOTE, A., additional, LOPES, I., additional, NEVES, F., additional, BERTHOUMIEUX, E., additional, DRIDI, W., additional, GUNSING, F., additional, AERTS, G., additional, PANCIN, J., additional, PERROT, L., additional, PLUKIS, A., additional, CORTES, G., additional, PRETEL, C., additional, COUTURE, A. J., additional, COX, J., additional, O'BRIEN, S., additional, WIESCHER, M., additional, DILLMAN, I., additional, HEIL, M., additional, KÄPPELER, F., additional, MOSCONI, M., additional, PLAG, R., additional, VOSS, F., additional, WALTER, S., additional, WISSHAK, K., additional, DOLFINI, R., additional, RUBBIA, C., additional, DOMINGO PARDO, C., additional, TAIN, J. L., additional, ELEFTHERIADIS, C., additional, LAMPOUDIS, C., additional, SAVVIDIS, I., additional, FURMAN, W., additional, KONOVALOV, V., additional, GOVERDOVSKI, A., additional, KETLEROV, V., additional, DURAN, I., additional, PARADELA, C., additional, ÁLVAREZ, H., additional, HAAS, B., additional, HAIGHT, R., additional, REIFARTH, R., additional, IGASHIRA, M., additional, KOEHLER, P., additional, KOSSIONIDES, E., additional, MASSIMI, C., additional, VANNINI, G., additional, OSHIMA, M., additional, PAPADOPOULOS, C., additional, VLASTOU, R., additional, PAVLIK, A., additional, PAVLOPOULOS, P., additional, PLOMPEN, A., additional, RULLHUSEN, P., additional, RAUSCHER, T., additional, ROSETTI, M., additional, and VENTURA, A., additional
Published: 2013
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226. THE LATEST ON NEUTRON-INDUCED CAPTURE AND FISSION MEASUREMENTS AT THE CERN n_TOF FACILITY

Author: GUERRERO, C., primary, BOCCONE, V., additional, BRUGGER, M., additional, CALVIANI, M., additional, CERUTTI, F., additional, CHIAVERI, E., additional, CHIN, M., additional, FERRARI, A., additional, KADI, Y., additional, LOSITO, R., additional, TSINGANIS, A., additional, VERSACI, R., additional, VLACHOUDIS, V., additional, GRIESMAYER, E., additional, JERICHA, E., additional, WEISS, C., additional, LEDERER, C., additional, PAVLIK, A., additional, WALLNER, A., additional, BECVAR, F., additional, KROLL, J., additional, KRTICKA, M., additional, VALENTA, S., additional, KAEPPELER, F., additional, SIMON LANGER, C., additional, REIFARTH, R., additional, BELLONI, F., additional, BERTHOUMIEUX, E., additional, FRAVAL, K., additional, GUNSING, F., additional, AUDOUIN, L., additional, SAI LEONG, L., additional, TASSAN-GOT, L., additional, DIAKAKI, M., additional, KARADIMOS, D., additional, KOKKORIS, M., additional, VLASTOU, R., additional, ELEFTHERIADIS, C., additional, MANOUSOS, A., additional, GANESAN, S., additional, RAJ, D., additional, MASSIMI, C., additional, MINGRONE, F., additional, MENGONI, A., additional, DZYSIUK, N., additional, MASTINU, P., additional, BARBAGALLO, M., additional, COLONNA, N., additional, MASTROMARCO, M., additional, MEAZE, M. H., additional, TAGLIENTE, G., additional, VARIALE, V., additional, MILAZZO, P. M., additional, ANDRZEJEWSKI, J., additional, MARGANIEC, J., additional, PERKOWSKI, J., additional, SARMENTO, R., additional, CARRAPICO, C., additional, GONCALVES, I., additional, AVRIGEANU, V., additional, MIREA, M., additional, ROMAN, F., additional, CANO-OTT, D., additional, GARCÍA-RÍOS, A., additional, MENDOZA, E., additional, GONZÁLEZ-ROMERO, E., additional, DOMINGO PARDO, C., additional, GIUBRONE, G., additional, TAIN, J. L., additional, CORTES, M., additional, PRAENA, J., additional, QUESADA, J. M., additional, PARADELA, C., additional, TARRIO, D., additional, DURAN, I., additional, CALVINO, F., additional, CORTES, G., additional, GOMEZ, B., additional, RIEGO, A., additional, BILLOWES, J., additional, WARE, T., additional, WRIGHT, T., additional, JENKINS, D., additional, VERMEULEN, M., additional, and KOEHLER, P., additional
Published: 2013
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227. (n,γ) Experiments on tin isotopes

Author: Baramsai, B., primary, Mitchell, G. E., additional, Walker, C. L., additional, Bredeweg, T. A., additional, Couture, A., additional, Haight, R. C., additional, Jandel, M., additional, Mosby, S., additional, O'Donnell, J. M., additional, Rundberg, R. S., additional, Rusev, G., additional, Ullmann, J. L., additional, Vieira, D. J., additional, Becvar, F., additional, Krticka, M., additional, Kroll, J., additional, Agvaanluvsan, U., additional, Dashdorj, D., additional, Erdenehuluun, B., additional, and Tsend-Ayush, T., additional
Published: 2013
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228. Neutron reactions and nuclear cosmo-chronology

Author: 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, Tagliente, G., Taín Enríquez, José Luis, Ketlerov, V., Tassan-Got, L., Tavora, L., Konovalov, V., Salgado, J., Koehler, P., Sarchiapone, L., Krticka, M., Savvidis, I., Rauscher, T., Reifarth, R., Plompen, A., Perrot, L., Pavlopoulos, P., Papadopoulos, C., Paradela, C., Patronis, N., Pavlik, A., O'Brien, S., Baumann, P., Pancin, J., Papachristodoulou, C., Neves, F., Moreau, C., Oshima, M., Oberhummer, H., Berthoumieux, E., Becvar, F., Mastinu, P.F., Milazzo, P.M., Badurek, G., Marques, L., Audouin, L., Marrone, S., Assimakopoulos, P., Lukic, S., Andrzejewski, J., Marganiec, J., Kossionides, E., Andriamonje, S., Álvarez-Velarde, F., Álvarez-Pol, H., Bisterzo, S., Lozano, M, Lopes, I., Lindote, A., Leeb, H., Lamboudis, C., Stephan, C., Vannini, G., Vaz, P., Abbondanno, U., Isaev, S., Mosconi, M., Jericha, E., Heil, M., Kadi, Y., Kappeler, F., Karamanis, D., Mengoni, A., Karadimos, D., Plag, R., Kerveno, M., Fujii, K., Aerts, G., Terlizzi, R., Wendler, H., Wiescher, M., Voss, F., Walter, S., Igashira, M., Vlachoudis, V., Herrera-Martinez, A., Vlastou, R., Haight, R., Villamarin, D., Haas, B., Vincente, M.C., Wisshak, K., Goverdovski, A., Ventura, A., Gramegna, F., Goncalves, I., Gonzalez-Romero, E., Gunsing, F., Griesmayer, E., Guerrero, C., Embid-Segura, M., Ferrari, A., Ferrant, L., Domingo-Pardo, C., Dridi, W., Duran, I., Eleftheriadis, C., Dahlfors, M., David, S., Dillmann, I., Dolfini, R., Cox, J., Couture, A., Colonna, N., Chiaveri, E., Cortés Rossell, Guillem Pere, Cennini, P., Chepel, V., Capote, R., Carrillo de Albornoz, A., Calviño Tavares, Francisco, Cano-Ott, D., Rullhusen, P., Rudolf, G., Pretel Sánchez, Carme, Quesada, J., Plukis, A., Poch Parés, Agustí, Rosetti, M., Rubbia, C., 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, Tagliente, G., Taín Enríquez, José Luis, Ketlerov, V., Tassan-Got, L., Tavora, L., Konovalov, V., Salgado, J., Koehler, P., Sarchiapone, L., Krticka, M., Savvidis, I., Rauscher, T., Reifarth, R., Plompen, A., Perrot, L., Pavlopoulos, P., Papadopoulos, C., Paradela, C., Patronis, N., Pavlik, A., O'Brien, S., Baumann, P., Pancin, J., Papachristodoulou, C., Neves, F., Moreau, C., Oshima, M., Oberhummer, H., Berthoumieux, E., Becvar, F., Mastinu, P.F., Milazzo, P.M., Badurek, G., Marques, L., Audouin, L., Marrone, S., Assimakopoulos, P., Lukic, S., Andrzejewski, J., Marganiec, J., Kossionides, E., Andriamonje, S., Álvarez-Velarde, F., Álvarez-Pol, H., Bisterzo, S., Lozano, M, Lopes, I., Lindote, A., Leeb, H., Lamboudis, C., Stephan, C., Vannini, G., Vaz, P., Abbondanno, U., Isaev, S., Mosconi, M., Jericha, E., Heil, M., Kadi, Y., Kappeler, F., Karamanis, D., Mengoni, A., Karadimos, D., Plag, R., Kerveno, M., Fujii, K., Aerts, G., Terlizzi, R., Wendler, H., Wiescher, M., Voss, F., Walter, S., Igashira, M., Vlachoudis, V., Herrera-Martinez, A., Vlastou, R., Haight, R., Villamarin, D., Haas, B., Vincente, M.C., Wisshak, K., Goverdovski, A., Ventura, A., Gramegna, F., Goncalves, I., Gonzalez-Romero, E., Gunsing, F., Griesmayer, E., Guerrero, C., Embid-Segura, M., Ferrari, A., Ferrant, L., Domingo-Pardo, C., Dridi, W., Duran, I., Eleftheriadis, C., Dahlfors, M., David, S., Dillmann, I., Dolfini, R., Cox, J., Couture, A., Colonna, N., Chiaveri, E., Cortés Rossell, Guillem Pere, Cennini, P., Chepel, V., Capote, R., Carrillo de Albornoz, A., Calviño Tavares, Francisco, Cano-Ott, D., Rullhusen, P., Rudolf, G., Pretel Sánchez, Carme, Quesada, J., Plukis, A., Poch Parés, Agustí, Rosetti, M., and Rubbia, C.
Abstract: The -decay of 187Re (t1/2 = 42.3 Gyr) represents a suited cosmo-chronometer for the age of the r-process abundances, since the radiogenic part of the daughter isotope 187Os is defined by the difference between the solar 187Os abundance and s-process contribution to 187Os. The latter component can be determined via the s-process systematics based on the stellar neutron capture cross sections of 186Os and 187Os. The laboratory cross section of 187Os requires a significant correction for the effect of the low-lying excited state at 9.75 keV, which is strongly populated under stellar conditions. This theoretical correction can be improved by an experimental cross section for inelastic scattering to the 9.75 keV state. High resolution time-of-flight measurements of (n, ) cross sections of 186,187,188Os from 1 eV to 1 MeV at CERN n TOF facility are reported. The inferred stellar cross sections differ from previously recommended values. In addition, the inelastic scattering cross section has been measured at 30 keV neutron energy via time-of-flight at the Karlsruhe 3.7 MV Van de Graaff. The implications of these results for the Re/Os clock are discussed., Peer Reviewed, Postprint (published version)
Published: 2007

229. Status and outlook of the neutron time-of-flight facility n_TOF at CERN

Author: Universitat Politècnica de Catalunya. Departament de Física, Universitat Politècnica de Catalunya. ANT - Advanced Nuclear Technologies Research Group, Universitat Politècnica de Catalunya. GREENER - Grup de recerca d'estudis energètics i de les radiacions, Gunsing, Frank, Abbondanno, U, Aerts, G, Alvarez, H, Alvarez Velarde, Francisco, Andriamonje, S, Assimakopoulos, P, Audouin, Ludmila, Badurek, G., Dolfini, R., Ferrant, L., Domingo Pardo, César, Dridi, W., Calviño Tavares, Francisco, Cortés Rossell, Guillem Pere, Duran, I., Ferrari, A., Ferreira-Marques, R., Frais-Koelbl, H., Furman, W., Fujii, K, Jericha, E., Goncalves, I., Gonzalez Romero, E., Goverdovski, A., Karamanis, D., Gramegna, F., Griesmayer, E., Haas, B., Haight, R., Kerveno, M., Herrera Martinez, Aura, Igashira, M., Isaev, S., Kappeler, F, Kadi, Y, Karadimos, D., Ketlerov, V., Koehler, Paul E., Konovalov, V., Kossionides, E., Krticka, M., Mengoni, A, Lampoudis, C., Leeb, H., Lindote, A., Neves, F., Lopes, I., Marrone, S., Lukic, S., Marganiec, J., Marques, L., Oberhummer, H., Martínez, T., Mastinu, P., Massimi, Cristian, Milazzo, P.M., Moreau, C, Mosconi, M., O'Brien, S., Oshima, M., Pancin, J., Papachristodoulou, C., Papadopoulos, C., Rauscher, Thomas, Paradela, C., Patronis, N., Pavlik, A., Rudolf, G., Pavlopoulos, P., Perrot, L., Pigni, M.T., Plag, R., Plompen, A., Plukis, A., Rullhusen, P., Pretel Sánchez, Carme, Poch Parés, Agustí, Quesada, J., Reifarth, R., Rubbia, C., Rosetti, M., Sarchiapone, L., Salgado, J., Savvidis, I., Stephan, C., Tagliente, G., Walter, S., Tassan-Got, L., Tavora, L., Becvar, F., Terlizzi, R., Vannini, Gianni, Vaz, P., Ventura, Alberto, Villamarin, D., Vincente, M.C., Berthoumieux, Eric, Vlastou, R., Vlachoudis, V., Voss, F., Wendler, H., Wiescher, M., Wisshak, K., Cano-Ott, D, Capote Noy, Roberto, Albornoz, A.C. de, Cennini, P., Eleftheriadis, C., Chepel, V., Chiaveri, E., Colonna, Nicola, Couture, A., Cox, J., Dahlfors, M., David, S., Dillmann, Iris, Lozano, Manuel, Guerrero, Carlos, Taín Enríquez, José Luis, Universitat Politècnica de Catalunya. Departament de Física, Universitat Politècnica de Catalunya. ANT - Advanced Nuclear Technologies Research Group, Universitat Politècnica de Catalunya. GREENER - Grup de recerca d'estudis energètics i de les radiacions, Gunsing, Frank, Abbondanno, U, Aerts, G, Alvarez, H, Alvarez Velarde, Francisco, Andriamonje, S, Assimakopoulos, P, Audouin, Ludmila, Badurek, G., Dolfini, R., Ferrant, L., Domingo Pardo, César, Dridi, W., Calviño Tavares, Francisco, Cortés Rossell, Guillem Pere, Duran, I., Ferrari, A., Ferreira-Marques, R., Frais-Koelbl, H., Furman, W., Fujii, K, Jericha, E., Goncalves, I., Gonzalez Romero, E., Goverdovski, A., Karamanis, D., Gramegna, F., Griesmayer, E., Haas, B., Haight, R., Kerveno, M., Herrera Martinez, Aura, Igashira, M., Isaev, S., Kappeler, F, Kadi, Y, Karadimos, D., Ketlerov, V., Koehler, Paul E., Konovalov, V., Kossionides, E., Krticka, M., Mengoni, A, Lampoudis, C., Leeb, H., Lindote, A., Neves, F., Lopes, I., Marrone, S., Lukic, S., Marganiec, J., Marques, L., Oberhummer, H., Martínez, T., Mastinu, P., Massimi, Cristian, Milazzo, P.M., Moreau, C, Mosconi, M., O'Brien, S., Oshima, M., Pancin, J., Papachristodoulou, C., Papadopoulos, C., Rauscher, Thomas, Paradela, C., Patronis, N., Pavlik, A., Rudolf, G., Pavlopoulos, P., Perrot, L., Pigni, M.T., Plag, R., Plompen, A., Plukis, A., Rullhusen, P., Pretel Sánchez, Carme, Poch Parés, Agustí, Quesada, J., Reifarth, R., Rubbia, C., Rosetti, M., Sarchiapone, L., Salgado, J., Savvidis, I., Stephan, C., Tagliente, G., Walter, S., Tassan-Got, L., Tavora, L., Becvar, F., Terlizzi, R., Vannini, Gianni, Vaz, P., Ventura, Alberto, Villamarin, D., Vincente, M.C., Berthoumieux, Eric, Vlastou, R., Vlachoudis, V., Voss, F., Wendler, H., Wiescher, M., Wisshak, K., Cano-Ott, D, Capote Noy, Roberto, Albornoz, A.C. de, Cennini, P., Eleftheriadis, C., Chepel, V., Chiaveri, E., Colonna, Nicola, Couture, A., Cox, J., Dahlfors, M., David, S., Dillmann, Iris, Lozano, Manuel, Guerrero, Carlos, and Taín Enríquez, José Luis
Abstract: The neutron time-of-flight facility n_TOF at CERN, fully operational since 2002, combines a high instantaneous neutron flux with high energy resolution. The wide energy range and the high neutron flux per time-of-flight burst result in a much enhanced signal to background ratio for neutron capture of radioactive isotopes and makes this facility well suited for the measurement of high quality neutron-induced reaction cross-sections. Neutrons are created by spallation reactions induced by a pulsed 20 GeV/c proton beam impinging on a lead target. A 5 cm water slab surrounding the lead target serves as a coolant and at the same time as a moderator of the spallation neutron spectrum, providing a wide energy spectrum from 0.1 eV to about 250 MeV. By the end of 2005, a first phase of data taking has been successfully terminated. Fission and capture experiments have been performed on a variety of isotopes of interest for nuclear astrophysics, advanced nuclear technologies and for basic nuclear physics. The instrumentation developed for this facility consists of parallel plate avalanche counter and fission ionization chamber detectors for the fission experiments and of low mass C6D6 detectors and a 4 pi BaF2 total absorption calorimeter for capture experiments. A new data acquisition system, based on sampling of the detector signals, has been developed to cope with the high count rates and to minimize the effective dead time to only a few tens of nanosecond. A second phase of data taking is planned to start in 2007, after an upgrade of the spallation target. On the longer term, the construction of a flight path at 20 m resulting in an increased neutron flux of about a factor of 100 opens new possibilities., Postprint (published version)
Published: 2007

230. Evidence of a low quartz structure at the SiO2/Si interface from coincidence Doppler broadening spectroscopy

Author: Brauer, G., Becvar, F., Anwand, W., Skorupa, W., Brauer, G., Becvar, F., Anwand, W., and Skorupa, W.
Abstract: Results from coincidence Doppler broadening measurements on various Si samples and Brazilian quartz having low quartz structure are presented with the aim to give further strong evidence for the existence of a low quartz structure, but not Si divacancies, at the SiO2/Si interface.
Published: 2007

231. Characterization of various crystalline structures at the SiO2/Si interface by positrons

Author: Brauer, G., Kuriplach, J., Anwand, W., Becvar, F., Skorupa, W., Brauer, G., Kuriplach, J., Anwand, W., Becvar, F., and Skorupa, W.
Abstract: The nature of the interface of the Si (001) surface with grown, native oxide is examined by a slow-positron beam equipped with coincidence Doppler broadening (DB). Measurements are combined with theoretical calculations of high-momentum DB profiles of Si, divacancy in Si, Brazilian quartz and the interface itself. From this comparison, the conclusion is drawn that an ordered structure exists at the interface. This structure resembles low quartz or a SiO2 structure with a lower density than low quartz.
Published: 2007

232. Resonance capture cross section of Pb-207

Author: 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, Sarchiapone, L., Savvidis, I., Kerveno, M., Stephan, C., Tagliente, G., Koehler, P., Rubbia, C., Ketlerov, V., Rudolf, G., Kossionides, E., Rullhusen, P., Goncalves, I., Gallino, R., Ferreira-Marques, R., Fitzpatrick, L., Frais-Koelbl, H., Fujii, K., Eleftheriadis, C., Embid-Segura, M., Ferrant, L., Ferrari, A., Poch Parés, Agustí, Duran, I., Dridi, W., Dolfini, R., David, S., Dillmann, I., Cox, J., Dahlfors, M., Colonna, N., Couture, A., Chiaveri, E., Perrot, L., Cortés Rossell, Guillem Pere, Rosetti, M., Reifarth, R., Plompen, A., Plag, R., Quesada, J., Rauscher, T., Pretel Sánchez, Carme, Plukis, A., Pavlopoulos, P., Pavlik, A., Patronis, N., Mosconi, M., Pancin, J., Wisshak, K., Papachristodoulou, C., Wiescher, M., Papadopoulos, C., Paradela, C., The nTOF Collaborat, Oberhummer, H., Oshima, M., O'Brien, S., Wendler, H., Moreau, C., Milazzo, P.M., Neves, F., Voss, F., Cennini, P., Carrapico, C., Mastinu, P., Capote, R., Mengoni, A., Cano-Ott, D., Marganiec, J., Bisterzo, S., Konovalov, V., Marrone, S., Calviño Tavares, Francisco, Lozano, M., Berthoumieux, E., Lukic, S., Becvar, F., Baumann, P., Badurek, G., Chepel, V., Lopes, I., Salgado, J., Lindote, A., Leeb, H., Lamboudis, C., Krticka, M., Taín Enríquez, José Luis, Tassan-Got, L., Audouin, L., Isaev, S., Domingo-Pardo, C., Jericha, E., Abbondanno, U., Kadi, Y., Aerts, G., Kaeppeler, F., Álvarez-Pol, H., Karamanis, D., Álvarez-Velarde, F., Karadimos, D., Andriamonje, S., Andrzejewski, J., Assimakopoulos, P., Vlachoudis, V., Vlastou, R., Villamarin, D., Vincente, M.C., Igashira, M., Vaz, P., Herrera-Martinez, A., Ventura, A., Heil, M., Terlizzi, R., Haight, R., Vannini, G., Walter, S., Gramegna, F., Tavora, L., Griesmayer, E., Gonzalez-Romero, E., Goverdovski, A., Haas, B., Guerrero, C., Gunsing, F., Furman, W., 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, Sarchiapone, L., Savvidis, I., Kerveno, M., Stephan, C., Tagliente, G., Koehler, P., Rubbia, C., Ketlerov, V., Rudolf, G., Kossionides, E., Rullhusen, P., Goncalves, I., Gallino, R., Ferreira-Marques, R., Fitzpatrick, L., Frais-Koelbl, H., Fujii, K., Eleftheriadis, C., Embid-Segura, M., Ferrant, L., Ferrari, A., Poch Parés, Agustí, Duran, I., Dridi, W., Dolfini, R., David, S., Dillmann, I., Cox, J., Dahlfors, M., Colonna, N., Couture, A., Chiaveri, E., Perrot, L., Cortés Rossell, Guillem Pere, Rosetti, M., Reifarth, R., Plompen, A., Plag, R., Quesada, J., Rauscher, T., Pretel Sánchez, Carme, Plukis, A., Pavlopoulos, P., Pavlik, A., Patronis, N., Mosconi, M., Pancin, J., Wisshak, K., Papachristodoulou, C., Wiescher, M., Papadopoulos, C., Paradela, C., The nTOF Collaborat, Oberhummer, H., Oshima, M., O'Brien, S., Wendler, H., Moreau, C., Milazzo, P.M., Neves, F., Voss, F., Cennini, P., Carrapico, C., Mastinu, P., Capote, R., Mengoni, A., Cano-Ott, D., Marganiec, J., Bisterzo, S., Konovalov, V., Marrone, S., Calviño Tavares, Francisco, Lozano, M., Berthoumieux, E., Lukic, S., Becvar, F., Baumann, P., Badurek, G., Chepel, V., Lopes, I., Salgado, J., Lindote, A., Leeb, H., Lamboudis, C., Krticka, M., Taín Enríquez, José Luis, Tassan-Got, L., Audouin, L., Isaev, S., Domingo-Pardo, C., Jericha, E., Abbondanno, U., Kadi, Y., Aerts, G., Kaeppeler, F., Álvarez-Pol, H., Karamanis, D., Álvarez-Velarde, F., Karadimos, D., Andriamonje, S., Andrzejewski, J., Assimakopoulos, P., Vlachoudis, V., Vlastou, R., Villamarin, D., Vincente, M.C., Igashira, M., Vaz, P., Herrera-Martinez, A., Ventura, A., Heil, M., Terlizzi, R., Haight, R., Vannini, G., Walter, S., Gramegna, F., Tavora, L., Griesmayer, E., Gonzalez-Romero, E., Goverdovski, A., Haas, B., Guerrero, C., Gunsing, F., and Furman, W.
Abstract: The radiative neutron capture cross section of 207Pb has been measured at the CERN neutron time of flight installation n TOF using the pulse height weighting technique in the resolved energy region. The measurement has been performed with an optimized setup of two C6D6 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 207Pb. This corresponds to an r-process component of 23 ± 8%, which is important for deriving the U/Th ages of metal poor halo stars., Peer Reviewed, Postprint (published version)
Published: 2006

233. Neutron Capture Cross Section of Unstable Ni-63: Implications for Stellar Nucleosynthesis

Author: Lederer C., Massimi C., Altstadt S., Andrzejewski J., Audouin L., Barbagallo M., Becares V., Becvar F., Belloni F., Berthoumieux E., Billowes J., Boccone V., Bosnar D., Brugger M., Calviani M., Calvino F., Cano-Ott D., Carrapico C., Cerutti F., Chiaveri E., Chin M., Colonna N., Cortes G., Cortes-Giraldo M. A., and Diakaki M.
Subjects: Astrophysics::High Energy Astrophysical Phenomena
Abstract: The Ni 63(n gamma) cross section has been measured for the first time at the neutron time of flight facility n_TOF at CERN from thermal neutron energies up to 200 keV. In total capture kernels of 12 (new) resonances were determined. Maxwellian averaged cross sections were calculated for thermal energies from kT = 5 100 keV with uncertainties around 20. Stellar model calculations for a 25M(circle dot) star show that the new data have a significant effect on the s process production of Cu 63 Ni 64 and Zn 64 in massive stars allowing stronger constraints on the Cu yields from explosive nucleosynthesis in the subsequent supernova. DOI: 10.1103/PhysRevLett.110.022501
Published: 2013

234. The data acquisition system of the neutron time-of-flight facility n_TOF at CERN

Author: Abbondanno, U, Aerts, G, Alvarez, F, Alvarez, H, Andriamonje, S, Andrzejewski, J, Badurek, G, Baumann, P, Becvar, F, Benlliure, J, Berthomieux, E, Betev, B, Calvino, F, Cano-Ott, D, Capote, R, Cennini, P, Chepel, V, Chiaveri, E, Colonna, N, Cortes, G, Cortina, D, Couture, A, Cox, J, Dababneh, S, 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, Gonzalez-Romero, E, Goverdovski, A, Gramegna, F, Griesmayer, E, Gunsing, F, Haas, B, Haight, R, Heil, M, Herrera-Martinez, A, Isaev, S, Jericha, E, Kadi, Y, Kappeler, F, Kerveno, M, Ketlerov, V, Koehler, P E, Konovalov, V, Krticka, M, Leeb, H, Lindote, A, Lopes, M I, Lozano, M, Lukic, S, Marganiec, J, Marrone, S, Martinez-Val, J, Mastinu, P, Mengoni, A, Milazzo, P M, 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, J M, Perrot, L, Peskov, Vladmir, Plag, R, Plompen, A, Plukis, A, Poch, A, Policarpo, A, Pretel, C, Quesada, J M, Rapp, W, Rauscher, T, Reifarth, R, Rosetti, M, Rubbia, C, Rudolf, G, Rullhusen, P, Salgado, J, Schafer, E, Soares, J C, Stephan, C, Tagliente, G, Tain, J L, Tassan-Got, L, Tavora, L M N, Terlizzi, R, Vannini, G, Vaz, P, Ventura, A, Villamarin-Fernandez, D, Vincente-Vincente, M, Vlachoudis, V, Voss, F, Wendler, H, Wiescher, M, Wisshak, K, Abbondanno, U, Aerts, G, Alvarez, F, Alvarez, H, Andriamonje, S, Andrzejewski, J, Badurek, G, Baumann, P, Becvar, F, Benlliure, J, Berthomieux, E, Betev, B, Calvino, F, Cano-Ott, D, Capote, R, Cennini, P, Chepel, V, Chiaveri, E, Colonna, N, Cortes, G, Cortina, D, Couture, A, Cox, J, Dababneh, S, 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, Gonzalez-Romero, E, Goverdovski, A, Gramegna, F, Griesmayer, E, Gunsing, F, Haas, B, Haight, R, Heil, M, Herrera-Martinez, A, Isaev, S, Jericha, E, Kadi, Y, Kappeler, F, Kerveno, M, Ketlerov, V, Koehler, P E, Konovalov, V, Krticka, M, Leeb, H, Lindote, A, Lopes, M I, Lozano, M, Lukic, S, Marganiec, J, Marrone, S, Martinez-Val, J, Mastinu, P, Mengoni, A, Milazzo, P M, 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, J M, Perrot, L, Peskov, Vladmir, Plag, R, Plompen, A, Plukis, A, Poch, A, Policarpo, A, Pretel, C, Quesada, J M, Rapp, W, Rauscher, T, Reifarth, R, Rosetti, M, Rubbia, C, Rudolf, G, Rullhusen, P, Salgado, J, Schafer, E, Soares, J C, Stephan, C, Tagliente, G, Tain, J L, Tassan-Got, L, Tavora, L M N, Terlizzi, R, Vannini, G, Vaz, P, Ventura, A, Villamarin-Fernandez, D, Vincente-Vincente, M, Vlachoudis, V, Voss, F, Wendler, H, Wiescher, M, and Wisshak, K
Abstract: The n_TOF facility at CERN has been designed for the measurement of neutron capture, fission and (n, xn) cross-sections with high accuracy. This requires a flexible and-due to the high instantaneous neutron flux-almost dead time free data acquisition system. A scalable and versatile data solution has been designed based on 8-bit flash-ADCs with sampling rates up to 2 GHz and 8 Mbyte memory buffer. The software is written in C and C++ and is running on PCs equipped with RedHat Linux.
Published: 2005
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235. Neutron capture cross section measurements for nuclear astrophysics at CERN n_TOF

Author: 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, Lopes, I., Rudolf, G., Lorusso, G., Pretel Sánchez, Carme, Milazzo, P.M., Benlliure, J., Koehler, P., Abbondanno, U., Konovalov, V., Aerts, G., Krticka, M., Álvarez-Velarde, F., Lamboudis, C., Alvarez-Pol, H., Leeb, H., Andriamonje, S., Lindote, A., Andrzejewski, J., Baumann, P., Becvar, F., Ketlerov, V., Kerveno, M., Karadimos, D., Kadi, Y., Herrera-Martinez, A., Haight, Y., Heil, M., Kappeler, F., Isaev, S., Jericha, E., Griesmaye, E., Haas, B., Gunsing, F., Gallino, R., Gonzalez-Romero, E., Goverdovski, A., Gramegna, F., Ferreira-Marques, R., Frais-Koelbl, H., Furman, W., Goncalves, I., Ferrari, A., Ferrant, L., Embid-Segura, M., Domingo-Pardo, C., Duran, I., David, S., Dolfini, R., Dababneh, S., Dahlfors, N., Couture, A., Cox, J., Poch Parés, Agustí, Wisshak, K., Wiescher, M., Vlachoudis, V., Voss, F., Plompen, A., Wendler, H., Ventura, A., Villamarin, D., Vincente, M.C., Terlizzi, R., Papaevangelou, T., Vaz, P., Vannini, G., Cortés Rossell, Guillem Pere, Colonna, N., Cennini, P., Tassan-Got, L., Chiaveri, E., Tavora, L., Chepel, V., Taín Enríquez, José Luis, Capote, R., Rosetti, N., Cano-Ott, D., Reifarth, R., Calviño Tavares, Francisco, Tagliente, G., Badurek, G., Berthoumieux, E., Cortina, D., Stephan, C., Soares, J.C., Rapp, W., Salgado, J., Rullhusen, P., 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, Lopes, I., Rudolf, G., Lorusso, G., Pretel Sánchez, Carme, Milazzo, P.M., Benlliure, J., Koehler, P., Abbondanno, U., Konovalov, V., Aerts, G., Krticka, M., Álvarez-Velarde, F., Lamboudis, C., Alvarez-Pol, H., Leeb, H., Andriamonje, S., Lindote, A., Andrzejewski, J., Baumann, P., Becvar, F., Ketlerov, V., Kerveno, M., Karadimos, D., Kadi, Y., Herrera-Martinez, A., Haight, Y., Heil, M., Kappeler, F., Isaev, S., Jericha, E., Griesmaye, E., Haas, B., Gunsing, F., Gallino, R., Gonzalez-Romero, E., Goverdovski, A., Gramegna, F., Ferreira-Marques, R., Frais-Koelbl, H., Furman, W., Goncalves, I., Ferrari, A., Ferrant, L., Embid-Segura, M., Domingo-Pardo, C., Duran, I., David, S., Dolfini, R., Dababneh, S., Dahlfors, N., Couture, A., Cox, J., Poch Parés, Agustí, Wisshak, K., Wiescher, M., Vlachoudis, V., Voss, F., Plompen, A., Wendler, H., Ventura, A., Villamarin, D., Vincente, M.C., Terlizzi, R., Papaevangelou, T., Vaz, P., Vannini, G., Cortés Rossell, Guillem Pere, Colonna, N., Cennini, P., Tassan-Got, L., Chiaveri, E., Tavora, L., Chepel, V., Taín Enríquez, José Luis, Capote, R., Rosetti, N., Cano-Ott, D., Reifarth, R., Calviño Tavares, Francisco, Tagliente, G., Badurek, G., Berthoumieux, E., Cortina, D., Stephan, C., Soares, J.C., Rapp, W., Salgado, J., and Rullhusen, P.
Abstract: A series of neutron capture cross section measurements of interest to nuclear astrophysics have been recently performed at n TOF, the neutron spallation source operating at CERN. The low repetition frequency of the proton beam driver, the extremely high instantaneous neutron flux, and the low background conditions in the experimental area are optimal for capture cross section measurements on low-mass or radioactive samples. An overview of the measurements performed during the two experimental campaigns in 2002 and 2003 is presented with special emphasis on the measurement of the capture cross sections of the Os isotopes relevant for the cosmochronology based on the Re/Os clock., Peer Reviewed, Postprint (published version)
Published: 2005

236. -Hydrogen-induced defects in niobium studied by positron annihilation spectroscopy

Author: Cizek, J., Prochazka, I., Kuzel, R., Becvar, F., Cieslar, M., Brauer, G., Anwand, W., Kirchheim, R., Pundt, A., Cizek, J., Prochazka, I., Kuzel, R., Becvar, F., Cieslar, M., Brauer, G., Anwand, W., Kirchheim, R., and Pundt, A.
Abstract: Our aim in the present work was to investigate changes of the defect structure of bulk niobium induced by hydrogen loading. The evolution of the microstructure with increasing hydrogen concentration was studied by x-ray diffraction and two complementary techniques of positron annihilation spectroscopies (PAS), namely positron lifetime spectroscopy and slow positron implantation spectroscopy with the measurement of the Doppler broadening, in defect-free Nb (99.9%) and Nb containing a remarkable number of dislocations. These samples were electrochemically loaded with hydrogen up to xH=0.06 [H/Nb], i.e. in the alpha-phase region, and it was found that the defect density increases with hydrogen concentration in both Nb samples. This means that hydrogen-induced defects are created in the Nb samples. A comparison of PAS results with theoretical calculations revealed that vacancy-hydrogen complexes are introduced into the samples due to hydrogen loading. Most probably these are vacancies surrounded by 4 hydrogen atoms.
Published: 2004

237. Hydrogen-induced defects in bulk niobium

Author: Cizek, J., Prochazka, I., Becvar, F., Kuzel, R., Cieslar, R., Brauer, G., Anwand, W., Kirchheim, R., Pundt, A., Cizek, J., Prochazka, I., Becvar, F., Kuzel, R., Cieslar, R., Brauer, G., Anwand, W., Kirchheim, R., and Pundt, A.
Abstract: Our aim in the present work was to investigate changes of the defect structure of bulk niobium induced by hydrogen loading. The evolution of the microstructure with increasing hydrogen concentration was studied by x-ray diffraction and two complementary techniques of positron annihilation spectroscopies (PAS), namely positron lifetime spectroscopy and slow positron implantation spectroscopy with the measurement of the Doppler broadening, in defect-free Nb (99.9%) and Nb containing a remarkable number of dislocations. These samples were electrochemically loaded with hydrogen up to xH=0.06 [H/Nb], i.e. in the alpha-phase region, and it was found that the defect density increases with hydrogen concentration in both Nb samples. This means that hydrogen-induced defects are created in the Nb samples. A comparison of PAS results with theoretical calculations revealed that vacancy-hydrogen complexes are introduced into the samples due to hydrogen loading. Most probably these are vacancies surrounded by 4 hydrogen atoms.
Published: 2004

238. Measurement of the236U(n,f) cross section from 170 meV to 2 MeV at the CERNn_TOFfacility

Author: Sarmento, R., primary, Calviani, M., additional, Praena, J., additional, Colonna, N., additional, Belloni, F., additional, Gonçalves, I. F., additional, Vaz, P., additional, Aerts, G., additional, Alvarez, H., additional, Alvarez-Velarde, F., additional, Andriamonje, S., additional, Andrzejewski, J., additional, Assimakopoulos, P., additional, Audouin, L., additional, Barbagallo, M., additional, Badurek, G., additional, Baumann, P., additional, Becvar, F., additional, Berthoumieux, E., additional, Calvino, F., additional, Cano-Ott, D., additional, Capote, R., additional, Carrapiço, C., additional, Carrillo de Albornoz, A., additional, Cennini, P., additional, Chepel, V., additional, Chiaveri, E., additional, Cortes, G., additional, Couture, A., additional, Cox, J., additional, Dahlfors, M., additional, David, S., additional, Diakaki, M., additional, Dillmann, I., additional, Dolfini, R., additional, Domingo-Pardo, C., additional, Dridi, W., additional, Duran, I., additional, Eleftheriadis, C., additional, Ferrant, L., additional, Ferrari, A., additional, Ferreira-Marques, R., additional, Frais-Koelbl, H., additional, Fuji, K., additional, Furman, W., additional, Gonzalez-Romero, E., additional, Goverdovski, A., additional, Gramegna, F., additional, Griesmayer, E., additional, Guerrero, C., additional, Gunsing, F., additional, Haas, B., additional, Haight, R., additional, Heil, M., additional, Herrera-Martinez, A., additional, Igashira, M., additional, Isaev, S., additional, Jericha, E., additional, Käppeler, F., additional, Kadi, Y., additional, Karadimos, D., additional, Karamanis, D., additional, Kerveno, M., additional, Ketlerov, V., additional, Koehler, P., additional, Konovalov, V., additional, Kossionides, E., additional, Krticka, M., additional, Lampoudis, C., additional, Lederer, C., additional, Leeb, H., additional, Lindote, A., additional, Lopes, I., additional, Lozano, M., additional, Lukic, S., additional, Marganiec, J., additional, Marques, L., additional, Marrone, S., additional, Martinez, T., additional, Massimi, C., additional, Mastinu, P., additional, Mendoza, E., additional, Mengoni, A., additional, Milazzo, P. M., additional, Moreau, C., additional, Mosconi, M., additional, Neves, F., additional, Oberhummer, H., additional, O’Brien, S., additional, Oshima, M., additional, Pancin, J., additional, Papachristodoulou, C., additional, Papadopoulos, C., additional, Paradela, C., additional, Patronis, N., additional, Pavlik, A., additional, Pavlopoulos, P., additional, Perrot, L., additional, Pigni, M. T., additional, Plag, R., additional, Plompen, A., additional, Plukis, A., additional, Poch, A., additional, Pretel, C., additional, Quesada, J., additional, Rauscher, T., additional, Reifarth, R., additional, Rosetti, M., additional, Rubbia, C., additional, Rudolf, G., additional, Rullhusen, P., additional, Salgado, J., additional, Sarchiapone, L., additional, Savvidis, I., additional, Stephan, C., additional, Tagliente, G., additional, Tain, J. L., additional, Tarrio, D., additional, Tassan-Got, L., additional, Tavora, L., additional, Terlizzi, R., additional, Vannini, G., additional, Ventura, A., additional, Villamarin, D., additional, Vicente, M. C., additional, Vlachoudis, V., additional, Vlastou, R., additional, Voss, F., additional, Walter, S., additional, Wendler, H., additional, Wiescher, M., additional, and Wisshak, K., additional
Published: 2011
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239. Photon Strength Functions of Medium-Weight and Heavy Nuclei

Author: Becvar, F., primary and Krticka, M., additional
Published: 2011
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240. Study of Photon Strength Function of Actinides: the Case of 235U, 238Np and 241Pu

Author: Guerrero, C., primary, Alvarez-Velarde, F., additional, Cano-Ott, D., additional, Martiez, T., additional, Mendoza, E., additional, Villamarin, D., additional, Colonna, N., additional, Meaze, M. H., additional, Marrone, S., additional, Tagliente, G., additional, Terlizzi, R., additional, Belloni, F., additional, Abbondanno, U., additional, Fujii, K., additional, Milazzo, P. M., additional, Moreau, C., additional, Aerts, G., additional, Berthoumieux, E., additional, Dridi, W., additional, Gunsing, F., additional, Pancin, J., additional, Perrot, L., additional, Plukis, A., additional, Alvarez, H., additional, Duran, I., additional, Paradela, C., additional, Andriamonje, S., additional, Calviani, M., additional, Chiaveri, E., additional, Gonzalez-Romero, E., additional, Kadi, Y., additional, Vicente, M. C., additional, Vlachoudis, V., additional, Andrzejewski, J., additional, Marganiec, J., additional, Assimakopoulos, P., additional, Karadimos, D., additional, Karamanis, D., additional, Papachristodoulou, C., additional, Patronis, N., additional, Audouin, L., additional, David, S., additional, Ferrant, L., additional, Isaev, S., additional, Stephan, C., additional, Tassan-Got, L., additional, Badurek, G., additional, Jericha, E., additional, Leeb, H., additional, Oberhummer, H., additional, Pigni, M. T., additional, Baumann, P., additional, Kerveno, M., additional, Lukic, S., additional, Rudolf, G., additional, Becvar, F., additional, Krticka, M., additional, Calvino, F., additional, Capote, R., additional, Albornoz, A. Carrillo De, additional, Marques, L., additional, Salgado, J., additional, Tavora, L., additional, Vaz, P., additional, Cennini, P., additional, Dahlfors, M., additional, Ferrari, A., additional, Gramegna, F., additional, Herrera-Martinez, A., additional, Mastinu, P., additional, Praena, J., additional, Sarchiapone, L., additional, Wendler, H., additional, Chepel, V., additional, Ferreira-Marques, R., additional, Goncalves, I., additional, Lindote, A., additional, Lopes, I., additional, Neves, F., additional, Cortes, G., additional, Poch, A., additional, Pretel, C., additional, Couture, A., additional, Cox, J., additional, O'brien, S., additional, Wiescher, M., additional, Dillman, I., additional, Kappeler, F., additional, Mosconi, M., additional, Plag, R., additional, Voss, F., additional, Walter, S., additional, Wisshak, K., additional, Dolfini, R., additional, Rubbia, C., additional, Domingo-Pardo, C., additional, Tain, J. L., additional, Eleftheriadis, C., additional, Savvidis, I., additional, Frais-Koelbl, H., additional, Griesmayer, E., additional, Furman, W., additional, Konovalov, V., additional, Goverdovski, A., additional, Ketlerov, V., additional, Haas, B., additional, Haight, R., additional, Reifarth, R., additional, Heil, M., additional, Igashira, M., additional, Koehler, P., additional, Kossionides, E., additional, Lampoudis, C., additional, Lozano, M., additional, Quesada, J., additional, Massimi, C., additional, Vannini, G., additional, Mengoni, A., additional, Oshima, M., additional, Papadopoulos, C., additional, Vlastou, R., additional, Pavlik, A., additional, Pavlopoulos, P., additional, Plompen, A., additional, Rullhusen, P., additional, Rauscher, T., additional, Rosetti, M., additional, and Ventura, A., additional
Published: 2011
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241. Past, Present and Future of the n_TOF Facility at CERN

Author: Chiaveri, E., primary, Andriamonje, S., additional, Calviani, M., additional, Vlachoudis, V., additional, Brugger, M., additional, Cennini, P., additional, Cerutti, F., additional, Chin, M., additional, Ferrari, A., additional, Kadi, Y., additional, Lebbos, E., additional, Losito, R., additional, Guerrero, C., additional, Becares, V., additional, Cano-Ott, D., additional, Fernandez-Ordo~nez, M., additional, Gonzalez-Romero, E., additional, Martinez, T., additional, Mendoza, E., additional, Ovejero, M. C., additional, Berthoumieux, E., additional, Gunsing, F., additional, Andrzejewski, J., additional, Marganiec, J., additional, Perkowski, J., additional, Audouin, L., additional, Berthier, B., additional, Tassan-Got, L., additional, Becvar, F., additional, Krticka, M., additional, Belloni, F., additional, Milazzo, P. M., additional, Calvino, F., additional, Hornillos, M. B. Gomez, additional, Carrapico, C., additional, Cortes, G., additional, Goncalves, I. F., additional, Sarmento, R., additional, Vaz, P., additional, Colonna, N., additional, Marrone, S., additional, Meaze, M., additional, Tagliente, G., additional, Variale, V., additional, Cortes-Giraldo, M., additional, Lozano, M., additional, Praena, J., additional, Quesada, J. M., additional, Dillmann, I., additional, Domingo-Pardo, C., additional, Heil, M., additional, Plag, R., additional, Reifarth, R., additional, Duran, I., additional, Paradela, C., additional, TarrIo, D., additional, Ganesan, S., additional, Giubrone, G., additional, Tain, J. L., additional, Gramegna, F., additional, Mastinu, P. F., additional, Harrisopulos, S., additional, Ioannides, K., additional, Karadimos, D., additional, Jericha, E., additional, Leeb, H., additional, Wei, C., additional, Kappeler, F., additional, Lederer, C., additional, Pavlik, A., additional, Wallner, A., additional, Massimi, C., additional, Vannini, G., additional, Mengoni, A., additional, Ventura, A., additional, Mosconi, M., additional, Nolte, R., additional, Rubbia, C., additional, Vlastou, R., additional, and Vykydal, Z., additional
Published: 2011
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242. New Techniques for Determining Spins and Parities of Neutron Resonances and Their Impact on Nuclear Astrophysics

Author: Koehler, P. E., primary, Harvey, J. A., additional, Becvar, F., additional, Krticka, M., additional, and Guber, K. H., additional
Published: 2011
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243. High-energy Neutron-induced Fission Cross Sections of Natural Lead and Bismuth-209

Author: Tarrio, D., primary, Tassan-Got, L., additional, Audouin, L., additional, Berthier, B., additional, Ferrant, L., additional, Isaev, S., additional, Naour, C. Le, additional, Stephan, C., additional, Trubert, D., additional, David, S., additional, Duran, I., additional, Paradela, C., additional, Alvarez, H., additional, Abbondanno, U., additional, Fujii, K., additional, Milazzo, P. M., additional, Moreau, C., additional, Aerts, G., additional, Alvarez-Velarde, F., additional, Cano-Ott, D., additional, Embid-Segura, M., additional, Gonzalez-Romero, E., additional, Guerrero, C., additional, Martinez, T., additional, Villamarin, D., additional, Vicente, M. C., additional, Andriamonje, S., additional, Berthoumieux, E., additional, Dridi, W., additional, Gunsig, F., additional, Pancin, J., additional, Perrot, L., additional, Plukis, A., additional, Andrzejewski, J., additional, Marganiec, J., additional, Assimakopoulos, P., additional, Karadimos, D., additional, Karamanis, D., additional, Papachristodoulou, C., additional, Patronis, N., additional, Badurek, G., additional, Jericha, E., additional, Leeb, H., additional, Oberhummer, H., additional, Pigni, M. T., additional, Baumann, P., additional, Kerveno, M., additional, Lukic, S., additional, Rudolf, G., additional, Becvar, F., additional, Krticka, M., additional, Calvino, F., additional, Cortes, G., additional, Poch, A., additional, Pretel, C., additional, Calviani, M., additional, Gramegna, F., additional, Mastinu, P., additional, Praena, J., additional, Capote, R., additional, Carrapico, C., additional, Cennini, P., additional, Chiaveri, E., additional, Dahlfors, M., additional, Ferrari, A., additional, Goncalves, I., additional, Herrera-Martinez, A., additional, Kadi, Y., additional, Sarchiapone, L., additional, Vlachoudis, V., additional, Chepel, V., additional, Ferreira-Marques, R., additional, Lindote, A., additional, Lopes, I., additional, Neves, F., additional, Colonna, N., additional, Tagliente, G., additional, Terlizzi, R., additional, Couture, A., additional, Cox, J., additional, Marrone, S., additional, O'brien, S., additional, Wiescher, M., additional, Dillmann, I., additional, Heil, M., additional, Kappeler, F., additional, Mosconi, M., additional, Voss, F., additional, Walter, S., additional, Wisshak, K., additional, Domingo-Pardo, C., additional, Plag, R., additional, Plompen, A., additional, Tain, J. L., additional, Eleftheriadis, C., additional, Savvidis, I., additional, Furman, W., additional, Haas, B., additional, Haight, R., additional, Reifarth, R., additional, Igashira, M., additional, Koehler, P., additional, Kossionides, E., additional, Lampoudis, C., additional, Lozano, M., additional, Quesada, J., additional, Massimi, C., additional, Vannini, G., additional, Mengoni, A., additional, Oshima, M., additional, Papadopoulos, C., additional, Pavlik, A., additional, Pavlopoulos, P., additional, Vlastou, R., additional, Rauscher, T., additional, Rubbia, C., additional, Rullhusen, P., additional, Salgado, J., additional, Santos, C., additional, Tavora, L., additional, Vaz, P., additional, and Ventura, A., additional
Published: 2011
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244. 237Np(n,f) Cross Section: New Data and Present Status

Author: Paradela, C., primary, Tassan-Got, L., additional, Audouin, L., additional, Berthier, B., additional, Ferrant, L., additional, Isaev, S., additional, Naour, C. Le, additional, Stephan, C., additional, Trubert, D., additional, David, S., additional, Duran, I., additional, Tarrio, D., additional, Alvarez, H., additional, Abbondanno, U., additional, Fujii, K., additional, Milazzo, P. M., additional, Moreau, C., additional, Aerts, G., additional, Alvarez-Velarde, F., additional, Cano-Ott, D., additional, Embid-Segura, M., additional, Gonzalez-Romero, E., additional, Guerrero, C., additional, Martinez, T., additional, Villamarin, D., additional, Vicente, M. C., additional, Andriamonje, S., additional, Berthoumieux, E., additional, Dridi, W., additional, Gunsing, F., additional, Pancin, J., additional, Perrot, L., additional, Plukis, A., additional, Andrzejewski, J., additional, Marganiec, J., additional, Assimakopoulos, P., additional, Karadimos, D., additional, Karamanis, D., additional, Papachristodoulou, C., additional, Patronis, N., additional, Badurek, G., additional, Jericha, E., additional, Leeb, H., additional, Oberhummer, H., additional, Pigni, M. T., additional, Baumann, P., additional, Kerveno, M., additional, Lukic, S., additional, Rudolf, G., additional, Becvar, F., additional, Krticka, M., additional, Calvino, F., additional, Cortes, G., additional, Poch, A., additional, Pretel, C., additional, Calviani, M., additional, Gramegna, F., additional, Mastinu, P., additional, Praena, J., additional, Capote, R., additional, Carrapico, C., additional, Cennini, P., additional, Chiaveri, E., additional, Dahlfors, M., additional, Ferrari, A., additional, Herrera-Martinez, A., additional, Kadi, Y., additional, Sarchiapone, L., additional, Vlachoudis, V., additional, Chepel, V., additional, Ferreira-Marques, R., additional, Lindote, A., additional, Lopes, I., additional, Neves, F., additional, Colonna, N., additional, Tagliente, G., additional, Terlizzi, R., additional, Couture, A., additional, Cox, J., additional, Marrone, S., additional, O'brien, S., additional, Wiescher, M., additional, Dillmann, I., additional, Heil, M., additional, Kappeler, F., additional, Mosconi, M., additional, Voss, F., additional, Walter, S., additional, Wisshak, K., additional, Domingo-Pardo, C., additional, Plag, R., additional, Plompen, A., additional, Tain, J. L., additional, Eleftheriadis, C., additional, Savvidis, I., additional, Furman, W., additional, Goncalves, I., additional, Salgado, J., additional, Santos, C., additional, Tavora, L., additional, Vaz, P., additional, Haas, B., additional, Haight, R., additional, Reifarth, R., additional, Igashira, M., additional, Koehler, P., additional, Kossionides, E., additional, Lampoudis, C., additional, Lozano, M., additional, Quesada, J., additional, Massimi, C., additional, Vannini, G., additional, Mengoni, A., additional, Oshima, M., additional, Papadopoulos, C., additional, Pavlik, A., additional, Pavlopoulos, P., additional, Vlastou, R., additional, Rauscher, T., additional, Rubbia, C., additional, Rullhusen, P., additional, and Ventura, A., additional
Published: 2011
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245. The Role of Fe and Ni for S-Process Nucleosynthesis and Innovative Nuclear Technologies

Author: Giubrone, G., primary, Tain, J. L., additional, Lederer, C., additional, Pavlik, A., additional, Wallner, A., additional, Andriamonje, S., additional, Brugger, M., additional, Calviani, M., additional, Cerutti, F., additional, Chiaveri, E., additional, Ferrari, A., additional, Kadi, Y., additional, Lebbos, E., additional, Vlachoudis, V., additional, Andrzejewski, J., additional, Marganiec, J., additional, Perkowski, J., additional, Audouin, L., additional, Berthier, B., additional, Tassan-Got, L., additional, Avrigeanu, V., additional, Mirea, M., additional, Becares, V., additional, Cano-Ott, D., additional, Fernandez-Ordonez, M., additional, Gonzalez-Romero, E., additional, Guerrero, C., additional, Martin-Fuertes, F., additional, Martinez, T., additional, Mendoza, E., additional, Pina, G., additional, Quinones, J., additional, Becvar, F., additional, Krticka, M., additional, Belloni, F., additional, Milazzo, P. M., additional, Berthoumieux, E., additional, Gunsing, F., additional, Calvino, F., additional, Cortes, G., additional, Gomez-Hornillos, M. B., additional, Carrapico, C., additional, Goncalves, I. F., additional, Sarmento, R., additional, Vaz, P., additional, Colonna, N., additional, Marrone, S., additional, Meaze, M. H., additional, Tagliente, G., additional, Variale, V., additional, Dillman, I., additional, Domingo-Pardo, C., additional, Heil, M., additional, Duran, I., additional, Paradela, C., additional, Tarrio, D., additional, Ganesan, S., additional, Gramegna, F., additional, Mastinu, P. F., additional, Harrisopulos, S., additional, Ioannides, K., additional, Karadimos, D., additional, Jericha, E., additional, Leeb, H., additional, Weiss, C., additional, Kappeler, F., additional, Lozano, M., additional, Praena, J., additional, Quesada, J. M., additional, Massimi, C., additional, Vannini, G., additional, Mengoni, A., additional, Ventura, A., additional, Mosconi, M., additional, Nolte, R., additional, and Vlastou, R., additional
Published: 2011
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246. Neutron Capture Measuremetns on Minor Actinides at the n_TOF Facility at CERN: Past, Present and Future

Author: Cano-Ott, D., primary, Alvarez-Velarde, F., additional, GonzaLez-Romero, E., additional, Guerrero, C., additional, Martinez, T., additional, Mendoza, E., additional, Villamarin, D., additional, Vicente, M. C., additional, Abbondanno, U., additional, Colonna, N., additional, Meaze, M. H., additional, Marrone, S., additional, Tagliente, G., additional, Terlizzi, R., additional, Belloni, F., additional, Fujii, K., additional, Milazzo, P. M., additional, Moreau, C., additional, Andriamonje, S., additional, Calviani, M., additional, Chiaveri, E., additional, Kadi, Y., additional, Vlachoudis, V., additional, Andrzejewski, J., additional, Marganiec, J., additional, Assimakopoulos, P., additional, Karadimos, D., additional, Karamanis, D., additional, Papachristodoulou, C., additional, Patronis, N., additional, Audouin, L., additional, David, S., additional, Ferrant, L., additional, Isaev, S., additional, Stephan, C., additional, Tassan-Got, L., additional, Badurek, G., additional, Jericha, E., additional, Leeb, H., additional, Oberhummer, H., additional, Pigni, M. T., additional, Baumann, P., additional, Kerveno, M., additional, Lukic, S., additional, Rudolf, G., additional, Becvar, F., additional, Krticka, M., additional, Calvino, F., additional, Frais-Koelbl, H., additional, Griesmayer, E., additional, Capote, R., additional, Lozano, M., additional, Quesada, J., additional, Mengoni, A., additional, Albornoz, A. Carrillo De, additional, Marques, L., additional, Salgado, J., additional, Tavora, L., additional, Vaz, P., additional, Cennini, P., additional, Dahlfors, M., additional, Ferrari, A., additional, Gramegna, F., additional, Herrera-Martinez, A., additional, Mastinu, P., additional, Praena, J., additional, Sarchiapone, L., additional, Wendler, H., additional, Chepel, V., additional, Ferreira-Marques, R., additional, Goncalves, I., additional, Praena, A. J., additional, Lindote, A., additional, Lopes, I., additional, Neves, F., additional, Aerts, G., additional, Berthoumieux, E., additional, Dridi, W., additional, Gunsing, F., additional, Pancin, J., additional, Perrot, L., additional, Plukis, A., additional, Lampoudis, C., additional, Cortes, G., additional, Poch, A., additional, Pretel, C., additional, Couture, A., additional, Cox, J., additional, O'Brien, S., additional, Wiescher, M., additional, Dillman, I., additional, Heil, M., additional, Kappeler, F., additional, Mosconi, M., additional, Plag, R., additional, Plag, F., additional, Walter, S., additional, Wisshak, K., additional, Dolfini, R., additional, Rubbia, C., additional, Domingo-Pardo, C., additional, Tain, J. L., additional, Eleftheriadis, C., additional, Savvidis, I., additional, Furman, W., additional, Konovalov, V., additional, Goverdovski, A., additional, Ketlerov, V., additional, Alvarez, H., additional, Duran, I., additional, Paradela, C., additional, Haas, B., additional, Haight, R., additional, Reifarth, R., additional, Igashira, M., additional, Koehler, P., additional, Kossionides, E., additional, Massimi, C., additional, Vannini, G., additional, Oshima, M., additional, Papadopoulos, C., additional, Vlastou, R., additional, Pavlik, A., additional, Pavlopoulos, P., additional, Plompen, A., additional, Rullhusen, P., additional, Rauscher, T., additional, Rosetti, M., additional, and Ventura, A., additional
Published: 2011
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247. Improved Neutron Capture Cross Section Measurements with the n_TOF Total Absorption Calorimeter

Author: Mendoza, E., primary, Becares, V., additional, Casado, A., additional, Cano-Ott, D., additional, Fernandez-Ordonez, M., additional, Gonzalez-Romero, E., additional, Guerrero, C., additional, Martinez, T., additional, Vidriales, J. J., additional, Andrzejewski, J., additional, Marganiec, J., additional, Perkowski, J., additional, Audouin, L., additional, Berthier, B., additional, Tassan-Got, L., additional, Avrigeanu, V., additional, Mirea, M., additional, Becvar, F., additional, Krticka, M., additional, Belloni, F., additional, Milazzo, P. M., additional, Berthoumieux, E., additional, Gunsing, F., additional, Calvino, F., additional, Cortes, G., additional, Gomez-Hornillos, M. B., additional, Andriamonje, S., additional, Brugger, M., additional, Calviani, M., additional, Cerutti, F., additional, Chiaveri, E., additional, Ferrari, A., additional, Kadi, Y., additional, Lebbos, E., additional, Losito, R., additional, Vlachoudis, V., additional, Carrapico, C., additional, Goncalves, I. F., additional, Saarmento, R., additional, Vaz, P., additional, Colonna, N., additional, Marrone, S., additional, Moinul, M., additional, Tagliente, G., additional, Variale, V., additional, Dillmann, I., additional, Domingo-Pardo, C., additional, Heil, M., additional, Duran, I., additional, Paradela, C., additional, Tarrio, D., additional, Ganesan, S., additional, Giubrone, G., additional, Tain, J. L., additional, Gramegna, F., additional, Mastinu, P. F., additional, Harrisopulos, S., additional, Ioannides, K., additional, Karadimos, D., additional, Jericha, E., additional, Leeb, H., additional, Weiss, C., additional, Kappeler, F., additional, Lederer, C., additional, Pavlik, A., additional, Wallner, A., additional, Lozano, M., additional, Prena, J., additional, Quesada, J. M., additional, Kappeler, C., additional, Massimi, C., additional, Vannini, G., additional, Mengoni, A., additional, Ventura, A., additional, Mosconi, M., additional, Nolte, R., additional, and Vlastou, R., additional
Published: 2011
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248. Characterization of the New n_TOF Neutron Beam: Fluence, Profile and Resolution

Author: Guerrero, C., primary, Becares, V., additional, Cano-Ott, D., additional, Fernandez-Ordonez, M., additional, Gonzalez-Romero, E., additional, Martin-Fuertes, F., additional, Martinez, T., additional, Mendoza, E., additional, Pina, G., additional, Quinones, J., additional, Vlachoudis, V., additional, Calviani, M., additional, Andriamonje, S., additional, Brugger, M., additional, Cerutti, F., additional, Chiaveri, E., additional, Ferrari, A., additional, Kadi, Y., additional, Lebbos, E., additional, Berthoumieux, E., additional, Gunsing, F., additional, Andrzejewski, J., additional, Marganiec, J., additional, Perkowski, J., additional, Audouin, L., additional, Berthier, B., additional, Tassan-Got, L., additional, Avrigeanu, V., additional, Mirea, M., additional, Becvar, F., additional, Krticka, M., additional, Belloni, F., additional, Milazzo, P. M., additional, Calvino, F., additional, Cortes, G., additional, Gomez-Hornillos, M. B., additional, Carrapico, C., additional, Goncalves, I. F., additional, Sarmento, R., additional, Vaz, P., additional, Colonna, N., additional, Marrone, S., additional, Moinul, M., additional, Tagliente, G., additional, Variale, V., additional, Dillmann, I., additional, Domingo-Pardo, C., additional, Heil, M., additional, Duran, I., additional, Paradela, C., additional, Tarrio, D., additional, Ganesan, S., additional, Giubrone, G., additional, Tain, J. L., additional, Gramegna, F., additional, Mastinu, P. F., additional, Harrisopulos, S., additional, Ioannides, K., additional, Karadimos, D., additional, Jericha, E., additional, Leeb, H., additional, Weiss, C., additional, Kappeler, F., additional, Lederer, C., additional, Pavlik, A., additional, Wallner, A., additional, Lozano, M., additional, Praena, J., additional, Quesada, J. M., additional, Massimi, C., additional, Vannini, G., additional, Mengoni, A., additional, Ventura, A., additional, Mosconi, M., additional, Nolte, R., additional, and Vlastou, R., additional
Published: 2011
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249. Neutron Resonance Spin Determination Using Multi-Segmented Detector DANCE

Author: Baramsai, B., primary, Mitchell, G. E., additional, Agvaanluvsan, U., additional, Becvar, F., additional, Bredeweg, T. A., additional, Couture, A., additional, Chyzh, A., additional, Dashdorj, D., additional, Haight, R. C., additional, Jandel, M., additional, Keksis, A. L., additional, Krticka, M., additional, O’Donnell, J. M., additional, Rundberg, R. S., additional, Ullmann, J. L., additional, Vieira, D. J., additional, Walker, C., additional, Wouters, J. M., additional, McDaniel, Floyd D., additional, and Doyle, Barney L., additional
Published: 2011
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250. Characterization of RF-sputtered platinum films by positron annihilation spectroscopy

Author: Brauer, G., Anwand, W., Nicht, E.-M., Kuriplach, J., Prochazka, I., Becvar, F., Osipowicz, A., Coleman, P. G., Brauer, G., Anwand, W., Nicht, E.-M., Kuriplach, J., Prochazka, I., Becvar, F., Osipowicz, A., and Coleman, P. G.
Abstract: Pt films on alumina substrates, both in their as-received and annealed states, have been extensively characterized by slow positron implantation spectroscopy (SPIS). Bulk Pt samples have been investigated by conventional positron annihilation spectroscopy (PAS) as well as by SPIS. A variety of state-of-the-art theoretical calculations have been performed to aid the interpretation of experimental findings. The research shows that a re-interpretation of earlier defect studies of bulk Pt by PAS is required in order to achieve a satisfactory agreement with the present experimental findings and theory.
Published: 2000

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