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51. Neutron-induced fission cross-section of 233U in the energy range 0.5 < En < 20 MeV

Author: M. Krtička, Masayuki Igashira, L. Tavora, C. Eleftheriadis, R. Ferreira-Marques, T. Martinez, Ralf Plag, Thomas Rauscher, R. Vlastou, E. Berthoumieux, D. Karadimos, S. David, G. Tagliente, Carlos Guerrero, A. Plukis, Heinz Oberhummer, G. Cortes, P. Rullhusen, I. Savvidis, Marco Calviani, J. Andrzejewski, M. C. Vincente, I. Duran, M. Rosetti, F. Voss, Christoph A. Stephan, A. Herrera-Martinez, N. Patronis, W.I. Furman, R. C. Haight, F. Gramegna, P. Pavlopoulos, Roberto Capote, E. Kossionides, J. Marganiec, J. Salgado, Arnaud Ferrari, U. Abbondanno, S. Andriamonje, A. Poch, Alberto Mengoni, A. J. M. Plompen, K. Fujii, Javier Praena, E. Chiaveri, C. A. Papachristodoulou, G. Aerts, P. F. Mastinu, G. Vannini, G. Rudolf, I. Lopes, C. Paradela, P. E. Koehler, L. Sarchiapone, M. Meaze, M. Dahlfors, F. Käppeler, H. Álvarez, P. Vaz, C. Lamboudis, J. L. Tain, F. Belloni, D. Cano-Ott, P. Cennini, Aaron Couture, D. Villamarin, James L. Cox, J. Pancin, Michael Heil, Manuel Lozano, A. Pavlik, C. Domingo-Pardo, C. T. Papadopoulos, V. Chepel, C. Rubbia, S. Lukic, Y. Kadi, Isabel S. Gonçalves, A. Goverdovski, C. Pretel, S. Marrone, F. Alvarez-Velarde, K. Wisshak, M. Kerveno, M. Mosconi, Corrie S. Moreau, M. Embid-Segura, Gerald Badurek, P. Baumann, S. O'Brien, L. Perrot, S. Walter, A. Lindote, D. Karamanis, Michael Wiescher, R. Terlizzi, Nicola Colonna, Vasilis Vlachoudis, Marco T. Pigni, I. Dillmann, F. Gunsing, Cristian Massimi, C. Carrapiço, E. Gonzalez-Romero, F. Calviño, H. Leeb, Rene Reifarth, J. M. Quesada, L. Tassan-Got, B. Haas, C. Santos, F. Bečvář, W. Dridi, A. Ventura, L. Audouin, F. Neves, P. M. Milazzo, E. Jericha, Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Département Recherches Subatomiques (DRS-IPHC), Institut Pluridisciplinaire Hubert Curien (IPHC), Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), 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), Pôle Universitaire Léonard de Vinci, Pôle Universitaire Léonard de Vinci (PULV), Institut de Physique Nucléaire d'Orsay (IPNO), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), nTOF, Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Physics, Range (particle radiation), Nuclear and High Energy Physics, Large Hadron Collider, 010308 nuclear & particles physics, Fission, Physics::Instrumentation and Detectors, Hadron, Flux, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 7. Clean energy, 01 natural sciences, Nuclear physics, 0103 physical sciences, Ionization chamber, Nuclear fusion, Neutron, 010306 general physics, Nuclear Experiment
Abstract: The neutron-induced fission cross-section of 233U has been measured at the CERN n_TOF facility relative to the standard fission cross-section of 235U between 0.5 and 20MeV. The experiment was performed with a fast ionization chamber for the detection of the fission fragments and to discriminate against $ \alpha$ -particles from the natural radioactivity of the samples. The high instantaneous flux and the low background of the n_TOF facility result in data with uncertainties of $ \approx$ 3% , which were found in good agreement with previous experiments. The high quality of the present results allows to improve the evaluation of the 233U (n,f) cross-section and, consequently, the design of energy systems based on the Th/U cycle.
Published: 2011
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52. Study of Photon Strength Function of Actinides: the Case of 235U, 238Np and 241Pu

Author: M. Mosconi, A. Goverdovski, S. O'Brien, F. Alvarez-Velarde, I. Dillman, Gerald Badurek, R. Terlizzi, Carlos Guerrero, U. Abbondanno, Heinz Oberhummer, Marco Calviani, Christoph A. Stephan, S. Walter, D. Karamanis, R. Dolfini, Ralf Plag, J. Salgado, W.I. Furman, M. Kerveno, L. Tavora, C. A. Papachristodoulou, A. Poch, M. C. Vicente, E. Kossionides, J. Pancin, P. Rullhusen, N. Colonna, Thomas Rauscher, S. Isaev, A. Herrera-Martinez, N. Patronis, Javier Praena, M. Dahlfors, F. Neves, P. M. Milazzo, D. Karadimos, P. Vaz, C. Eleftheriadis, I. Duran, I. Savvidis, Rene Reifarth, D. Cano-Ott, E. Gonzalez-Romero, G. Aerts, Y. Kadi, Aaron Couture, P. Pavlopoulos, A. Mengoni, H. Álvarez, S. David, H. Frais-Koelbl, J. L. Tain, V. Ketlerov, C. Lampoudis, G. Tagliente, A. Plukis, A. Pavlik, Manuel Lozano, C. Domingo-Pardo, A. Carrillo de Albornoz, L. Ferrant, Martin Heil, J. M. Quesada, J. Marganiec, R. C. Haight, C. T. Papadopoulos, S. Andriamonje, L. Tassan-Got, C. Paradela, L. Sarchiapone, M. Meaze, R. Vlastou, E. Jericha, C. Rubbia, T. Martiez, C. Pretel, E. Berthoumieux, E. Chiaveri, M. Rosetti, P. F. Mastinu, Isabel S. Gonçalves, L. Audouin, S. Marrone, P. E. Koehler, E. Mendoza, Michael Wiescher, K. Fujii, M. Krtička, B. Haas, D. Villamarin, R. Ferreira-Marques, Marco T. Pigni, Anthony Ferrari, L. Marques, E. Griesmayer, Fabio Belloni, L. Perrot, F. Käppeler, V. Chepel, G. Rudolf, P. Baumann, W. Dridi, Masayuki Igashira, A. Ventura, K. Wisshak, Isabel Lopes, Corrie S. Moreau, A. J. M. Plompen, H. Wendler, S. Lukic, James L. Cox, F. Calviño, F. Voss, H. Leeb, F. Becvar, Vasilis Vlachoudis, F. Gramegna, F. Gunsing, Cristian Massimi, G. Cortes, Roberto Capote, P.A. Assimakopoulos, G. Vannini, M. Oshima, J. Andrzejewski, V. Konovalov, A. Lindote, P. Cennini, Universitat Politècnica de Catalunya. Departament de Física i Enginyeria Nuclear, 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, Guerrero C., Alvarez-Velarde F., Cano-Ott D., Martiez T., Mendoza E., Villamarin D., Colonna N., H. Meaze M., Marrone S., Tagliente G., Terlizzi R., Belloni F., Abbondanno U., Fujii K., M. Milazzo P., Moreau C., Aerts G., Berthoumieux E., Dridi W., Gunsing F., Pancin J., Perrot L., Plukis A., Alvarez H., Duran I., Paradela C., Andriamonje S., Calviani M., Chiaveri E., Gonzalez-Romero E., Kadi Y., C. Vicente M., Vlachoudis V., Andrzejewski J., Marganiec J., Assimakopoulos P., Karadimos D., Karamanis D., Papachristodoulou C., Patronis N., Audouin L., David S., Ferrant L., Isaev S., Stephan C., Tassan-Got L., Badurek G., Jericha E., Leeb H., Oberhummer H., T. Pigni M., Baumann P., Kerveno M., Lukic S., Rudolf G., Becvar F., Krticka M., Calvino F., Capote R., Carrillo De Albornoz A., Marques L., Salgado J., Tavora L., Vaz P., Cennini P., Dahlfors M., Ferrari A., Gramegna F., Herrera-Martinez A., Mastinu P., Praena J., Sarchiapone L., Wendler H., Chepel V., Ferreira-Marques R., Goncalves I., Lindote A., Lopes I., Neves F., Cortes G., Poch A., Pretel C., Couture A., Cox J., Obrien S., Wiescher M., Dillman I., Kappeler F., Mosconi M., Plag R., Voss F., Walter S., Wisshak K., Dolfini R., Rubbia C., Domingo-Pardo C., L. Tain J., Eleftheriadis C., Savvidis I., Frais-Koelbl H., Griesmayer E., Furman W., Konovalov V., Goverdovski A., Ketlerov V., Haas B., Haight R., Reifarth R., Heil M., Igashira M., Koehler P., Kossionides E., Lampoudis C., Lozano M., Quesada J., Massimi C., Vannini G., Mengoni A., Oshima M., Papadopoulos C., Vlastou R., Pavlik A., Pavlopoulos P., Plompen A., Rullhusen P., Rauscher T., Rosetti M., Ventura A., Département d'Electronique, des Détecteurs et d'Informatique pour la Physique (ex SEDI) (DEDIP), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Institut de Physique Nucléaire d'Orsay (IPNO), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Département Recherches Subatomiques (DRS-IPHC), Institut Pluridisciplinaire Hubert Curien (IPHC), Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Aval du cycle et Energie Nucléaire (ACEN), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), TOF, Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Physics, Energies::Energia nuclear [Àrees temàtiques de la UPC], Neutrons, Work (thermodynamics), Photon, 010308 nuclear & particles physics, General Physics and Astronomy, radiative capture cross section, Actinide, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], NEUTRON INDUCED REACTIONS, Electromagnetisme, 01 natural sciences, Spectral line, Nuclear physics, Neutron capture, Electromagnetism, Excited state, 0103 physical sciences, Photon Strength Function, Atomic physics, 010306 general physics, Absorption (electromagnetic radiation), Nuclear Experiment, Energy (signal processing)
Abstract: The decay from excited levels in medium and heavy nuclei can be described in a statistical approach by means of Photon Strength Functions and Level Density distributions. The study of electromagnetic cascades following neutron capture based on the use of high e ciency detectors has been shown to be well suited for probing the properties of the Photon Strength Function of heavy (high level density) and/or radioactive (high background) nuclei. In this work we have investigated for the rst time the validity of the recommended PSF of actinides, in particular 235U, 238Np and 241Pu. Our study includes the search for resonance structures in the PSF below Sn and draws conclusions regarding their existence and their characteristics in terms of energy, width and electromagnetic nature.
Published: 2011
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53. Astrophysical Implications of the $^{139}$La$(n,\gamma)$ and $^{151}$Sm$(n,\gamma)$ Cross Sections Measured at $n_{\rm TOF}$

Author: E. Griesmayer, A. J. M. Plompen, P. Cennini, S. Walter, J. Salgado, A. Poch, N. Colonna, S. David, G. Cortes, G. Tagliente, E. Jericha, Ralf Plag, James L. Cox, L. Sarchiapone, Rene Reifarth, Masayuki Igashira, F. Voss, L. Ferrant, M. Dahlfors, F. Becvar, Andrea Venturi, I. Savvidis, M. Mosconi, Corrie S. Moreau, J. Pancin, C. Rubbia, L. Fitzpatrick, G. Aerts, P. Vaz, A. Plukis, C. Stephan, F. Gunsing, P. E. Koehler, S. O'Brien, Isabel S. Gonçalves, M. Oshima, Vasilis Vlachoudis, H. Alvarez-Pol, M. Embid-Segura, F. Gramegna, Carlos Guerrero, Aaron Couture, Roberto Capote, J. Andrzejewski, U. Abbondanno, P.A. Assimakopoulos, Heinz Oberhummer, M. Krtička, D. Villamarin, M. C. Vincente, A. Herrera-Martinez, Y. Kadi, H. Frais-Koelbl, R. Terlizzi, Costas G. Papadopoulos, Roberto Gallino, R. Ferreira Marques, Michael Heil, C. Lamboudis, J. L. Tain, G. Vannini, J. M. Quesada, L. Tassan-Got, M. Rosetti, Isabel Lopes, Alberto Mengoni, W.I. Furman, I. Duran, Robert C. Haight, C. A. Papachristodoulou, E. Kossionides, Stefano Marrone, A. Pavlik, C. Domingo-Pardo, V. Konovalov, D. Cano-Ott, M. Kerveno, Manuel Lozano, S. Andriamonje, S. Lukic, P. Pavlopoulos, E. Chiaveri, P. F. Mastinu, F. Neves, P. M. Milazzo, S. Isaev, Marco Pignatari, V. Ketlerov, J. Marganiec, C. Paradela, L. Audouin, Wiescher Michael, C. Eleftheriadis, F. Calviño, H. Leeb, Thomas Rauscher, D. Karadimos, A. Ferrari, K. Wisshak, R. Vlastou, E. Berthoumieux, E. González-Romero, B. Haas, H. Wendler, Iris Dillmann, W. Dridi, C. Carrapiço, D. Karamanis, N. Patronis, A. Lindote, A. Goverdovski, F. Alvarez-Velarde, Gerald Badurek, R. Dolfini, F. Käppeler, L. Perrot, V. Chepel, G. Rudolf, P. Baumann, C. Pretel, K. Fujii, L. Tavora, and P. Rullhusen
Published: 2010
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54. Neutron cross sections at n_TOF

Author: M. Oshima, J. Andrzejewski, J. Pancin, A. Pavlik, S. Lukic, G. Cortes, B. Haas, Y. Kadi, I. Duran, Iris Dillmann, Costas G. Papadopoulos, H. Frais-Koelbl, V. Konovalov, M. Dahlfors, L. Perrot, C. Eleftheriadis, P. Vaz, K. Fujii, C. Carrapiço, Aaron Couture, F. Voss, J. Salgado, A. Poch, F. Becvar, I. Savvidis, P. Cennini, Thomas Rauscher, Roberto Capote, P.A. Assimakopoulos, W. Dridi, A. Goverdovski, Rene Reifarth, Isabel Lopes, F. Calviño, H. Leeb, Nicola Colonna, M. Embid-Segura, L. Ferrant, E. Griesmayer, G. Aerts, A. Plukis, F. Alvarez-Velarde, Vasilis Vlachoudis, H. Alvarez-Pol, L. Sarchiapone, D. Karadimos, F. Gramegna, Wiescher Michael, L. Fitzpatrick, Manuel Lozano, D. Karamanis, E. González-Romero, G. Vannini, K. Wisshak, Sara Bisterzo, R. Vlastou, Gerald Badurek, N. Patronis, J. M. Quesada, S. Andriamonje, L. Tassan-Got, E. Berthoumieux, A. Herrera-Martinez, R. Dolfini, E. Jericha, D. Villamarin, E. Chiaveri, M. Rosetti, M. C. Vincente, Arnaud Ferrari, R. Ferreira Marques, P. F. Mastinu, H. Wendler, S. David, M. Mosconi, Alberto Mengoni, C. Stephan, F. Gunsing, G. Tagliente, D. Cano-Ott, S. Isaev, S. O'Brien, V. Ketlerov, M. Krtička, P. E. Koehler, V. Chepel, G. Rudolf, F. Käppeler, Roberto Gallino, César Domingo Pardo, R. Terlizzi, C. Paradela, F. Neves, P. M. Milazzo, L. Audouin, P. Pavlopoulos, L. Tavora, J. Marganiec, P. Rullhusen, P. Baumann, C. Pretel, Masayuki Igashira, E. Kossionides, A. Lindote, Michael Heil, Carlos Guerrero, U. Abbondanno, Heinz Oberhummer, A. J. M. Plompen, S. Walter, Ralf Plag, James L. Cox, W.I. Furman, C. A. Papachristodoulou, Andrea Venturi, Corrie S. Moreau, M. Kerveno, C. Rubbia, Isabel S. Gonçalves, S. Marrone, C. Lamboudis, J. L. Tain, and Robert C. Haight
Subjects: Nuclear physics, Astrophysics and Astronomy, Materials science, Neutron
Published: 2010
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55. Neutron physics of the Re/Os clock. I. Measurement of the (n,γ) cross sections ofOs186,187,188at the CERN n_TOF facility

Author: A. J. M. Plompen, L. Tavora, M. Krtička, F. Calviño, A. Pavlik, F. Voss, D. Karamanis, I. Dillmann, R. Ferreira-Marques, V. Chepel, R. C. Haight, Vasilis Vlachoudis, H. Alvarez-Pol, P. Rullhusen, G. Rudolf, C. Paradela, James L. Cox, L. Sarchiapone, S. Lukic, F. Gramegna, L. Audouin, E. Jericha, S. David, R. Gallino, Matthias Heil, G. Tagliente, J. Pancin, G. Cortes, P. Cennini, Carlos Guerrero, U. Abbondanno, Michael Wiescher, V. Ketlerov, M. Oshima, Sara Bisterzo, S. Andriamonje, E. Griesmayer, M. C. Vincente, A. Herrera-Martinez, N. Patronis, F. Bečvář, Heinz Oberhummer, Y. Kadi, E. Chiaveri, M. Embid-Segura, H. Frais-Koelbl, C. T. Papadopoulos, M. Mosconi, Arnaud Ferrari, J. Andrzejewski, P. F. Mastinu, J. Marganiec, Alberto Mengoni, P. Baumann, G. Aerts, J. Salgado, F. Käppeler, L. Perrot, Masayuki Igashira, A. Poch, G. Badurek, S. Walter, Manuel Lozano, C. Eleftheriadis, C. Rubbia, Corrie S. Moreau, S. Isaev, S. O'Brien, K. Wisshak, F. Neves, N. Colonna, F. Alvarez-Velarde, Isabel S. Gonçalves, Thomas Rauscher, P. M. Milazzo, P. E. Koehler, A. Ventura, Ralf Plag, S. Marrone, M. Dahlfors, Roberto Capote, P.A. Assimakopoulos, L. Marques, R. Terlizzi, M. Kerveno, Isabel Lopes, D. Karadimos, E. Kossionides, R. Vlastou, P. Vaz, G. Vannini, Javier Praena, D. Cano-Ott, E. Berthoumieux, I. Duran, A. Plukis, Rene Reifarth, E. González-Romero, A. Carrillo de Albornoz, W.I. Furman, I. Savvidis, J. M. Quesada, Aaron Couture, H. Wendler, L. Tassan-Got, M. Calviani, C. Domingo-Pardo, V. Konovalov, C. Stephan, B. Haas, C. Lamboudis, J. L. Tain, M. Rosetti, F. Gunsing, C. A. Papachristodoulou, W. Dridi, Cristian Massimi, H. Leeb, P. Pavlopoulos, L. Ferrant, K. Fujii, L. Fitzpatrick, D. Villamarin, Fabio Belloni, C. Pretel, A. Lindote, A. Goverdovski, and R. Dolfini
Subjects: Physics, Nuclear reaction, Nuclear and High Energy Physics, 010308 nuclear & particles physics, Gamma ray, Scintillator, 01 natural sciences, 7. Clean energy, Nuclear physics, Neutron capture, 13. Climate action, Nucleosynthesis, 0103 physical sciences, Neutron, s-process, 010303 astronomy & astrophysics, Radioactive decay
Abstract: The precise determination of the neutron capture cross sections of Os-186 and Os-187 is important to define the s-process abundance of Os-187 at the formation of the solar system. This quantity can be used to evaluate the radiogenic component of the abundance of Os-187 due to the decay of the unstable Re-187 (t(1/2) = 41.2 Gyr) and from this to infer the time duration of the nucleosynthesis in our galaxy (Re/Os cosmochronometer). The neutron capture cross sections of Os-186, Os-187, and Os-188 have been measured at the CERN n_TOF facility from 1 eV to 1 MeV, covering the entire energy range of astrophysical interest. The measurement has been performed by time-of-flight technique using isotopically enriched samples and two C6D6 scintillation detectors for recording the prompt. rays emitted in the capture events. Maxwellian averaged capture cross sections have been determined for thermal energies between kT = 5 and 100 keV corresponding to all possible s-process scenarios. The estimated uncertainties for the values at 30 keV are 4.1, 3.3, and 4.7% for Os-186, Os-187, and Os-188, respectively.
Published: 2010
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56. Neutron physics of the Re/Os clock. III. Resonance analyses and stellar (n,γ) cross sections ofOs186,187,188

Author: D. Karamanis, I. Dillmann, V. Chepel, M. Kerveno, G. Rudolf, D. Villamarin, F. Gramegna, B. Haas, L. Tavora, M. Dahlfors, P. Pavlopoulos, R. Vlastou, E. Berthoumieux, P. Vaz, P. Baumann, E. Gonzalez-Romero, Marco Calviani, A. Lindote, J. Salgado, A. Poch, F. Bečvář, P. Rullhusen, W. Dridi, M. Oshima, A. Plukis, M. Embid-Segura, G. Cortes, F. Gunsing, Aaron Couture, Rene Reifarth, Sara Bisterzo, K. Fujii, J. Andrzejewski, L. Ferrant, J. Marganiec, M. C. Vincente, J. M. Quesada, L. Tassan-Got, A. Herrera-Martinez, N. Patronis, A. Goverdovski, F. Alvarez-Velarde, S. Andriamonje, E. Chiaveri, G. Aerts, Cristian Massimi, C. Eleftheriadis, L. Fitzpatrick, A. Pavlik, P. F. Mastinu, Gerald Badurek, Arnaud Ferrari, P. Cennini, Fabio Belloni, C. Domingo-Pardo, R. C. Haight, Christoph A. Stephan, R. Dolfini, C. T. Papadopoulos, S. Lukic, C. Paradela, Roberto Capote, M. Mosconi, L. Sarchiapone, L. Audouin, Thomas Rauscher, A. Ventura, P.A. Assimakopoulos, S. O'Brien, C. Rubbia, J. Pancin, V. Konovalov, R. Terlizzi, E. Griesmayer, M. Krtička, G. Vannini, H. Leeb, C. Pretel, Manuel Lozano, Isabel S. Gonçalves, F. Calviño, Y. Kadi, Michael Wiescher, F. Voss, H. Frais-Koelbl, D. Karadimos, L. Marques, S. Marrone, S. David, G. Tagliente, E. Jericha, R. Ferreira-Marques, Nicola Colonna, K. Wisshak, Vasilis Vlachoudis, H. Alvarez-Pol, S. Isaev, C. Lamboudis, J. L. Tain, P. E. Koehler, H. Wendler, L. Perrot, F. Käppeler, M. Rosetti, I. Duran, I. Savvidis, A. Mengoni, V. Ketlerov, A. Carrillo de Albornoz, W.I. Furman, C. A. Papachristodoulou, Carlos Guerrero, U. Abbondanno, F. Neves, Heinz Oberhummer, P. M. Milazzo, S. Walter, Ralf Plag, R. Gallino, Michael Heil, D. Cano-Ott, E. Kossionides, Corrie S. Moreau, Javier Praena, A. J. M. Plompen, I. Lopes, James L. Cox, and Masayuki Igashira
Subjects: Physics, Nuclear reaction, Nuclear and High Energy Physics, 010308 nuclear & particles physics, Resonance, 01 natural sciences, 7. Clean energy, Nuclear physics, Neutron capture, 13. Climate action, Nucleosynthesis, 0103 physical sciences, Neutron, Nucleon, s-process, 010303 astronomy & astrophysics, Stellar evolution
Abstract: Neutron resonance analyses have been performed for the capture cross sections of Os-186, Os-187, and Os-188 measured at the n_TOF facility at CERN. Resonance parameters have been extracted up to 5, 3, and 8 keV, respectively, using the SAMMY code for a full R-matrix fit of the capture yields. From these results average resonance parameters were derived by a statistical analysis to provide a comprehensive experimental basis for modeling of the stellar neutron capture rates of these isotopes in terms of the Hauser-Feshbach statistical model. Consistent calculations for the capture and inelastic reaction channels are crucial for the evaluation of stellar enhancement factors to correct the Maxwellian averaged cross sections obtained from experimental data for the effect of thermally populated excited states. These factors have been calculated for the full temperature range of current scenarios of s-process nucleosynthesis using the combined information of the experimental data in the region of resolved resonances and in the continuum. The consequences of this analysis for the s-process component of the Os-187 abundance and the related impact on the evaluation of the time duration of galactic nucleosynthesis via the Re/Os cosmochronometer are discussed.
Published: 2010
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57. TheZr92(n,γ) reaction and its implications for stellar nucleosynthesis

Author: D. Villamarin, J. Andrzejewski, Marco T. Pigni, Rene Reifarth, Carlo Rubbia, V. Vlachoudis, E. Jericha, J. Marganiec, S. Andriamonje, I. Savvidis, P. Pavlopoulos, L. Tavora, J. M. Quesada, E. Kossionides, F. Bečvář, P. F. Mastinu, M. Calviani, J. Pancin, P. Rullhusen, E. Chiaveri, D. Cano-Ott, Javier Praena, F. Gunsing, F. Alvarez-Velarde, S. David, G. Tagliente, M. C. Vincente, M. Kerveno, Gerald Badurek, Alfredo Ferrari, R. Ferreira-Marques, G. Cortes, L. Sarchiapone, Sara Bisterzo, C. Eleftheriadis, P. Cennini, A. Herrera-Martinez, N. Patronis, P. M. Milazzo, M. Krtička, F. Calviño, J. Cox, R. Gallino, Yacine Kadi, Alberto Mengoni, T. Martinez, R. C. Haight, D. Karamanis, U. Abbondanno, Laurent Tassan-Got, Michael Heil, M. Mosconi, M. Igashira, L. Perrot, L. Audouin, C. Stephan, S. O'Brien, J. Salgado, A. Poch, C. Santos, B. Haas, C. T. Papadopoulos, Michael Wiescher, R. Terlizzi, R. Vlastou, C. Pretel, E. Berthoumieux, E. Gonzalez-Romero, H. Leeb, A. Plukis, W. Dridi, F. Gramegna, Roberto Capote, Ralf Plag, I. Goncalves, S. Walter, I. Duran, F. Neves, Thomas Rauscher, K. Wisshak, C. Moreau, F. Käppeler, C. Carrapiço, S. Marrone, C. Massimi, G. Vannini, V. Chepel, C. Paradela, K. Fujii, S. Lukic, P. Baumann, H. Álvarez, C. Lamboudis, J. L. Tain, D. Karadimos, H. Wendler, Fabio Belloni, F. Voss, Carlos Guerrero, Heinz Oberhummer, Nicola Colonna, W.I. Furman, A. Lindote, C. A. Papachristodoulou, A. J. M. Plompen, M. Rosetti, G. Rudolf, I. Lopes, G. Aerts, I. Dillmann, A. Pavlik, C. Domingo-Pardo, M. Dahlfors, P. Vaz, Alberto Ventura, Aaron Couture, M. Embid-Segura, and Manuel Lozano
Subjects: Physics, Nuclear reaction, Nuclear and High Energy Physics, 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, 7. Clean energy, 01 natural sciences, Neutron temperature, Nuclear physics, Neutron capture, Stellar nucleosynthesis, Nucleosynthesis, 0103 physical sciences, Isotopes of zirconium, Neutron, Nuclear Experiment, s-process, 010303 astronomy & astrophysics
Abstract: Because the relatively small neutron capture cross sections of the zirconium isotopes are difficult to measure, the results of previous measurements are often not adequate for a number of problems in astrophysics and nuclear technology. Therefore, the Zr-92(n,gamma) cross section has been remeasured at the CERN n_TOF facility, providing a set of improved parameters for 44 resonances in the neutron energy range up to 40 keV. With this information the cross-section uncertainties in the keV region could be reduced to 5% as required for s-process nucleosynthesis studies and technological applications.
Published: 2010
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58. Au197(n,γ) cross section in the resonance region

Author: L. Tavora, S. David, A. Herrera-Martinez, P. Rullhusen, G. Tagliente, G. Aerts, Alberto Mengoni, C. Lampoudis, A. Pavlik, C. Domingo-Pardo, M. Igashira, J. Cox, M. Dahlfors, Georgios Perdikakis, P. Vaz, Laurent Tassan-Got, E. Kossionides, F. Bečvář, Alberto Ventura, Aaron Couture, A. J. M. Plompen, E. Mendoza, G. Rudolf, I. Lopes, P. Cennini, A. Poch, Javier Praena, M. Krtička, F. Calviño, T. Martinez, L. Perrot, M. Mosconi, D. Karamanis, I. Dillmann, C. Stephan, S. O'Brien, L. Ferrant, R. Terlizzi, J. Pancin, E. Chiaveri, V. Chepel, D. Cano-Ott, Carlos Guerrero, G. Vannini, I. Savvidis, C. Lederer, C. Massimi, Heinz Oberhummer, P. Baumann, R. Sarmento, Alfredo Ferrari, R. Ferreira-Marques, F. Käppeler, M. Rosetti, P. E. Koehler, H. Leeb, F. Gramegna, Ralf Plag, G. Cortes, Michael Heil, F. Alvarez-Velarde, F. Voss, I. Duran, Manuel Lozano, Gerald Badurek, M. Calviani, L. Sarchiapone, C. Carrapiço, I. Goncalves, W.I. Furman, F. Gunsing, Roberto Capote, P.A. Assimakopoulos, C. Moreau, Thomas Rauscher, F. Neves, A. Lindote, E. Jericha, D. Karadimos, K. Fujii, K. Wisshak, R. Vlastou, Nicola Colonna, Fabio Belloni, S. Walter, C. Pretel, B. Haas, C. Paradela, S. Lukic, U. Abbondanno, Rene Reifarth, P. Pavlopoulos, E. Berthoumieux, J. M. Quesada, J. Andrzejewski, Carlo Rubbia, V. Vlachoudis, R. C. Haight, P. M. Milazzo, L. Audouin, Michael Wiescher, J. Marganiec, S. Andriamonje, C. Eleftheriadis, P. F. Mastinu, E. Gonzalez-Romero, A. Plukis, Yacine Kadi, C. T. Papadopoulos, D. Villamarin, Marco T. Pigni, W. Dridi, S. Galanopoulos, S. Marrone, M. Kerveno, H. Álvarez, and J. L. Tain
Subjects: Physics, Nuclear reaction, Nuclear and High Energy Physics, 010308 nuclear & particles physics, Resolution (electron density), Gamma ray, Resonance, 01 natural sciences, 7. Clean energy, Spectral line, Neutron spectroscopy, Cross section (physics), 0103 physical sciences, Atomic physics, 010306 general physics, Absorption (electromagnetic radiation)
Abstract: The (n,γ) cross section of Au197 has been measured at n-TOF in the resolved resonance region, up to 5keV, with the aim of improving the accuracy in an energy range where it is not yet considered standard. The measurements were performed with two different experimental setup and detection techniques, the total energy method based on C6D6 detectors, and the total absorption calorimetry based on a 4π BaF2 array. By comparing the data collected with the two techniques, two accurate sets of neutron-capture yields have been obtained, which could be the basis for a new evaluation leading to an extended cross-section standard. Overall good agreement is found between the n-TOF results and evaluated cross sections, with some significant exceptions for small resonances. A few resonances not included in the existing databases have also been observed. © 2010 The American Physical Society.
Published: 2010
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59. High-accuracyU233(n,f)cross-section measurement at the white-neutron source n_TOF from near-thermal to1MeV neutron energy

Author: B. Berthier, G. Aerts, Michael Heil, A. Lindote, S. David, F. Neves, C. Pretel, G. Tagliente, P. M. Milazzo, C. Santos, K. Fujii, A. Herrera-Martinez, N. Patronis, Fabio Belloni, Arnaud Ferrari, F. Bečvář, L. Perrot, L. Ferrant, M. Dahlfors, P. Cennini, C. Eleftheriadis, Alberto Mengoni, P. Vaz, M. Embid-Segura, E. Kossionides, V. Chepel, G. Vannini, J. Pancin, E. Jericha, G. Rudolf, Thomas Rauscher, Javier Praena, M. Kerveno, J. Salgado, D. Villamarin, P. Baumann, Rene Reifarth, Aaron Couture, D. Karadimos, A. Poch, M. Mosconi, Y. Kadi, Marco T. Pigni, A. J. M. Plompen, Manuel Lozano, D. Cano-Ott, S. O'Brien, C. Lampoudis, A. Pavlik, G. Cortes, A. Goverdovski, F. Alvarez-Velarde, C. Domingo-Pardo, R. Terlizzi, V. Ketlerov, J. M. Quesada, Roberto Capote, Gerald Badurek, P.A. Assimakopoulos, L. Tassan-Got, Marco Calviani, L. Tavora, P. E. Koehler, Masayuki Igashira, M. Rosetti, B. Haas, P. Pavlopoulos, P. Rullhusen, I. Savvidis, I. Lopes, E. Gonzalez-Romero, L. Sarchiapone, W. Dridi, H. Álvarez, J. L. Tain, A. Ventura, C. T. Papadopoulos, M. C. Vincente, I. Duran, A. Plukis, C. Rubbia, Christoph A. Stephan, Isabel S. Gonçalves, S. Marrone, F. Käppeler, James L. Cox, M. Krtička, F. Calviño, R. Vlastou, E. Berthoumieux, R. Ferreira-Marques, T. Martinez, J. Marganiec, S. Andriamonje, Carlos Guerrero, E. Chiaveri, U. Abbondanno, P. F. Mastinu, Heinz Oberhummer, R. C. Haight, C. Paradela, D. Karamanis, I. Dillmann, L. Audouin, Corrie S. Moreau, Michael Wiescher, C. Carrapiço, W.I. Furman, C. A. Papachristodoulou, S. Walter, Ralf Plag, S. Lukic, F. Gunsing, Cristian Massimi, F. Voss, Nicola Colonna, Vasilis Vlachoudis, F. Gramegna, K. Wisshak, J. Andrzejewski, V. Konovalov, and H. Leeb
Subjects: Physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, Fission, Neutron radiation, 7. Clean energy, 01 natural sciences, Neutron temperature, Nuclear physics, Cross section (physics), Neutron flux, 0103 physical sciences, Uranium-235, Neutron source, Neutron, Nuclear Experiment, 010306 general physics
Abstract: The U-233(n, f) cross section has been measured at the white neutron source n_TOF in a wide energy range with a dedicated fission ionization chamber. We report here the results from similar to 30 meV to 1 MeV neutron energy. The U-233(n, f) cross section has been determined relative to a reference sample of U-235(n, f) measured simultaneously with the same detector. The very high instantaneous neutron flux and the intrinsically low background of the n_TOF installation result in an accuracy around 3 range, while the energy resolution of the neutron beam allows for an accurate description of the fission cross section by means of R-matrix analysis over a wide energy range. The results are, in general, in good agreement with the most recent high-accuracy measurement of this fission cross section, over the more limited range of the previous measurements, and indicated that even the latest evaluations underestimate the cross section in the epithermal region. The present high-quality data provide the basis for a more precise evaluation of the U-233 fission cross section and for improving the reliability of databases needed for the design of new energy systems based on the Th/U cycle.
Published: 2009
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60. A new method for tracking Pathways of humans searching for wild, edible fungi

Author: L. Pacheco-Cobos, M. Rosetti, and R. | Hudson
Subjects: GPS tracking, Biología, Fungi gathering, Nahua community, fungi spatial distribution, Mexico, human foraging behavior
Abstract: "The study of human foraging behavior is relevant for social anthropology and behavioral ecology, because it makes it possible to study directly the relationship between human communities and the forest resources they use and manage. The recording of individual search pathways in the field has improved, in recent years, due to the availability of satellite technologies like the Global Positioning System (GPS). The present study was carried out in a Nahua community in Tlaxcala, Mexico, where wild fungi constitute an important source of food and income. We discuss different methods used to record foraging paths in humans as well as the spatial location of fungi gathered. Likewise, we mention the difficulties and procedures we have found useful in overcoming them. The best recordings were obtained when the GPS device was: 1) Programmed to record geographical position by time rather than distance intervals; 2) Carried by the researcher; and 3) Used to mark the sites in the forest where fungi were collected. Although the sample size explored was small, we believe that the analysis of the paths obtained using this method can provide insights into the decisions that underlie the foraging patterns of humans, as well as the possible relation between these and the spatial distribution of fungi."
Published: 2009

61. Measurement of the radiative neutron capture cross section ofPb206and its astrophysical implications

Author: I. Duran, E. Jericha, P. E. Koehler, J. Pancin, E. Chiaveri, D. Cano-Ott, C. Pretel, G. Cortes, A. J. M. Plompen, L. Tavora, Roberto Capote, P.A. Assimakopoulos, G. Rudolf, I. Lopes, F. Bečvář, S. David, M. Oshima, E. Kossionides, J. Andrzejewski, G. Aerts, F. Neves, G. Tagliente, V. Chepel, Carlos Guerrero, Carlo Rubbia, P. Rullhusen, Heinz Oberhummer, P. Baumann, V. Vlachoudis, F. Calviño, H. Leeb, C. Paradela, S. Lukic, V. Konovalov, C. Massimi, F. Käppeler, M. C. Vincente, C. Moreau, J. Marganiec, S. Andriamonje, Ralf Plag, A. Goverdovski, F. Alvarez-Velarde, P. F. Mastinu, P. M. Milazzo, A. Pavlik, Gerald Badurek, K. Wisshak, C. Domingo-Pardo, R. Dolfini, W.I. Furman, F. Voss, E. Gonzalez-Romero, J. Salgado, C. Eleftheriadis, A. Lindote, Nicola Colonna, A. Plukis, A. Poch, H. Wendler, M. Embid-Segura, Yacine Kadi, U. Abbondanno, M. Dahlfors, Sara Bisterzo, F. Gunsing, L. Perrot, Manuel Lozano, S. Walter, P. Vaz, A. Herrera-Martinez, N. Patronis, Alfredo Ferrari, R. Ferreira-Marques, M. Krtička, Alberto Mengoni, Alberto Ventura, Aaron Couture, M. Igashira, B. Haas, P. Cennini, E. Berthoumieux, C. Carrapiço, R. C. Haight, M. Mosconi, C. Stephan, S. O'Brien, R. Gallino, L. Audouin, Rene Reifarth, E. Griesmayer, I. Savvidis, R. Terlizzi, Michael Heil, Michael Wiescher, P. Pavlopoulos, D. Villamarin, J. M. Quesada, D. Karamanis, M. Rosetti, M. Calviani, V. Ketlerov, C. Papachristodoulou, I. Goncalves, Thomas Rauscher, D. Karadimos, F. Gramegna, L. Sarchiapone, I. Dillman, R. Vlastou, H. Frais-Koelbl, K. Fujii, C. T. Papadopoulos, W. Dridi, M. Isaev, S. Marrone, J. Cox, Laurent Tassan-Got, H. Álvarez, C. Lamboudis, J. L. Tain, L. Ferrant, L. Fitzpatrick, M. Kerveno, and G. Vannini
Subjects: Physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, Monte Carlo method, 01 natural sciences, 7. Clean energy, Nuclear physics, Uranium-238, 13. Climate action, Nucleosynthesis, 0103 physical sciences, Neutron cross section, Radiative transfer, Neutron, s-process, 010303 astronomy & astrophysics, Radioactive decay
Abstract: The (n,γ) cross section of Pb206 has been measured at the CERN n_TOF facility with high resolution in the energy range from 1 eV to 620 keV by using two optimized C6D6 detectors. In the investigated energy interval about 130 resonances could be observed, from which 61 had enough statistics to be reliably analyzed via the R-matrix analysis code SAMMY. Experimental uncertainties were minimized, in particular with respect to (i) angular distribution effects of the prompt capture γ-rays, and to (ii) the TOF-dependent background due to sample-scattered neutrons. Other background components were addressed by background measurements with an enriched Pb208 sample. The effect of the lower energy cutoff in the pulse height spectra of the C6D6 detectors was carefully corrected via Monte Carlo simulations. Compared to previous Pb206 values, the Maxwellian averaged capture cross sections derived from these data are about 20% and 9% lower at thermal energies of 5 keV and 30 keV, respectively. These new results have a direct impact on the s-process abundance of Pb206, which represents an important test for the interpretation of the cosmic clock based on the decay of U238. © 2007 The American Physical Society.
Published: 2007
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62. Composition-driven surface domain structuring mediated by sphingolipids and membrane-active proteins. Above the nano- but under the micro-scale: mesoscopic biochemical/structural cross-talk in biomembranes

Author: Graciela A. Borioli, Bruno Maggio, Maximiliano Del Boca, Maria Laura Fanani, Natalia Wilke, Rafael G. Oliveira, Carla M. Rosetti, and Luisina De Tullio
Subjects: Surface (mathematics), Mesoscopic physics, Microscopy, Sphingolipids, Chemistry, Surface Properties, Lipid Bilayers, Static Electricity, Biophysics, Membrane Proteins, Cell Biology, General Medicine, Biochemistry, Sphingolipid, Crystallography, Membrane, Spectrometry, Fluorescence, Phase (matter), Membrane topology, Nano, Animals, Humans, Sphingomyelin, Myelin Sheath
Abstract: Biomembranes contain a wide variety of lipids and proteins within an essentially two-dimensional structure. The coexistence of such a large number of molecular species causes local tensions that frequently relax into a phase or compositional immiscibility along the lateral and transverse planes of the interface. As a consequence, a substantial microheterogeneity of the surface topography develops and that depends not only on the lipid-protein composition, but also on the lateral and transverse tensions generated as a consequence of molecular interactions. The presence of proteins, and immiscibility among lipids, constitute major perturbing factors for the membrane sculpturing both in terms of its surface topography and dynamics. In this work, we will summarize some recent evidences for the involvement of membrane-associated, both extrinsic and amphitropic, proteins as well as membrane-active phosphohydrolytic enzymes and sphingolipids in driving lateral segregation of phase domains thus determining long-range surface topography.
Published: 2007

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

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

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

Author: Dennis A. Tighe, M. Rosetti, Il-Seop Shin, and Patrick A. Kelly
Subjects: Landmark, business.industry, Three dimensional echocardiography, Solid modeling, Edge detection, Probability propagation, Robustness (computer science), Medical imaging, Computer vision, Artificial intelligence, business, Algorithm, Factor graph, Mathematics
Abstract: This paper presents an algorithm, based on a framework of probability propagation in factor graphs, that estimates left ventricular (LV) volume by tracking boundary points through a three dimensional echocardiographic data set. The tracking is made robust to frame-to-frame variations through the use of soft "edge likelihood" information. The only operator input to the algorithm is marking some highly visible landmark points along the LV boundary in a few frames. The points establish search regions for spatially intermediate frames, within which boundary points are found by maximizing edge likelihood. A similar procedure, employing forward and backward tracking, is used for temporal boundary tracking at each spatial location. LV volume is calculated from the set of estimated boundaries using planimetry. The results are validated by comparing ejection fractions to those computed from nuclear volumes and by cardiologists using commercial software
Published: 2007
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66. Future seeding experiments at SPARC

Author: 72.L. Poletto, G. Tondello, S. De Silvestri, M. Nisoli, G. Sansone, S. Stagira, P. Musumeci, M. Petrarca, M. Mattioli, M. Labat, O. Tcherbakoff, M. Bougeard, B. Carré, D. Garzella, G. Lambert, H. Merdji, P. Salières, M. E. Couprie, D. Alesini, M. Bellaveglia, M. Biagini, R. Boni, M. Castellano, E. Chiadroni, A. Cianchi, A. Clozza, A. Drago, M. Ferrario, D. Filippetto, V. Fusco, A. Gallo, A. Ghigo, M. Migliorati, L. Palumbo, C. Sanelli, F. Sgamma, B. Spataro, S. Tomassini, C. Vaccarezza, C. Vicario, L. Serafini, S. Ambrogio, F. Ciocci, G. Dattoli, A. Doria, G. P. Gallerano, M. Germano, L. Giannessi, E. Giovenale, I. Spassovsky, M. Quattromini, A. Renieri, C. Ronsivalle, P.L. Ottaviani, S. Pagnutti, M. Rosetti, A. Dipace, and E. Sabia
Subjects: free-electron laser, high-order harmonics
Published: 2007

67. Resonance capture cross section ofPb207

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

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

69. New measurement of neutron capture resonances inBi209

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

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

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

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

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

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

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

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

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

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

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

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

79. Biophysics of sphingolipids II. Glycosphingolipids: an assortment of multiple structural information transducers at the membrane surface

Author: Maria Laura Fanani, Bruno Maggio, Carla M. Rosetti, and Natalia Wilke
Subjects: Ceramide, Stereochemistry, Lipid Bilayers, Biophysics, Membrane fusion, Biochemistry, Biophysical Phenomena, Glycosphingolipids, chemistry.chemical_compound, Glycosphingolipid in membrane topology, Glycosphingolipid–phospholipid interaction, Phospholipase, Topology (chemistry), Molecular Structure, Bilayer, Lipid bilayer fusion, Cell Biology, Glycosphingolipid, Brewster angle microscopy, Sphingolipid, Membrane, Glycosphingolipid-enriched domain, chemistry, Ganglioside, Epifluorescence microscopy, lipids (amino acids, peptides, and proteins), Sphingomyelinase, Sphingomyelin
Abstract: Glycosphingolipids are ubiquitous components of animal cell membranes. They are constituted by the basic structure of ceramide with its hydroxyl group linked to single carbohydrates or oligosaccharide chains of different complexity. The combination of the properties of their hydrocarbon moiety with those derived from the variety and complexity of their hydrophilic polar head groups confers to these lipids an extraordinary capacity for molecular-to-supramolecular transduction across the lateral/transverse planes in biomembranes and beyond. In our opinion, most of the advances made over the last decade on the biophysical behavior of glycosphingolipids can be organized into three related aspects of increasing structural complexity: (1) intrinsic codes: local molecular interactions of glycosphingolipids translated into structural self-organization. (2) Surface topography: projection of molecular shape and miscibility of glycosphingolipids into formation of coexisting membrane domains. (3) Beyond the membrane interface: glycosphingolipid as modulators of structural topology, bilayer recombination and surface biocatalysis.
Published: 2005

80. Measurement of $^{139}$La(n,$\gamma$) Cross Section at n_TOF

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

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

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

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

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

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

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

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

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

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

Author: Lopez M. Rosetti, Roberto R. Favaloro, Liliana E. Favaloro, Alejandro Bertolotti, Peradejordi M. Lastras, and Daniel O. Absi
Subjects: Transplantation, medicine.medical_specialty, Heart disease, business.industry, Internal medicine, medicine, Cardiology, medicine.disease, business
Published: 2014
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89. Aminophylline reversal of antihypertensive agent toxicity

Author: R J, Roberge, M L, Rossetti, and J M, Rosetti
Subjects: Cardiotonic Agents, Adrenergic beta-Antagonists, Quinapril, Angiotensin-Converting Enzyme Inhibitors, Middle Aged, Isoquinolines, Aminophylline, Treatment Outcome, Atenolol, Fluvoxamine, Tetrahydroisoquinolines, Humans, Female, Drug Overdose, Hypotension, Selective Serotonin Reuptake Inhibitors
Abstract: Hypotension occurred following a combined beta blocker (atenolol), angiotensin converting enzyme inhibitor (quinapil) and selective serotonin reuptake inhibitor (fluvoxamine) overdose. In another instance heart block and hypotension was noted in association with a diltiazem and atenolol adverse interaction. Crystalloid infusion was ineffective in both cases, but toxicity was rapidly reversed with aminophylline administration. Aminophylline's recognized inotropic and chronotropic properties make it a potentially valuable therapeutic agent in the treatment of antihypertensive medication toxicity.
Published: 2001

90. Intra-Operative Radiation Therapy Optimization Using the Monte Carlo Method

Author: M. Benassi, M. D’Andrea, M. Rosetti, A. Bufacchi, and V. Bruzzaniti
Subjects: Intra operative, Materials science, business.industry, medicine.medical_treatment, Monte Carlo method, Dose profile, Surgical operation, Residual, Linear particle accelerator, Resection, Radiation therapy, medicine, Nuclear medicine, business
Abstract: Intra-Operative Radiation Therapy (IORT) [1] is an innovative cancer treatment technique which consists in delivering during a surgical operation a radiation dose on the order of 10-20 Gy to a tumor bed or to a tumor residual after the resection. In this way it is possible to destroy the residual malignant cells. IORT is generally performed by means of electron beams produced by linear accelerators (linacs) in the range 3-12 MeV.
Published: 2001
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91. Proton stopping powers averaged over beam energy spectra

Author: M Rosetti and R F Laitano
Subjects: Physics, Range (particle radiation), Radiological and Ultrasound Technology, Proton, Phantoms, Imaging, Sobp, Water, Bragg peak, Fluence, Nuclear physics, Physics::Accelerator Physics, Stopping power (particle radiation), Radiology, Nuclear Medicine and imaging, Computer Simulation, Laser beam quality, Atomic physics, Protons, Nuclear Experiment, Radiometry, Monte Carlo Method, Beam (structure), Algorithms
Abstract: Stopping powers averaged over the proton energy spectra at various depths in water and a tissue-like material were calculated for proton beams with initial energies between 50 and 250 MeV. The analysis was made for proton beams with a spread-out Bragg peak (SOBP) to assess in particular the variations of stopping power with depth in the SOBP plateau region. Nuclear interactions were accounted for in determination of the proton energy spectra. In modulated beams, stopping power varies considerably with depth along the plateau region of the spread-out peak. Moreover, stopping powers at the same water depth may differ from each other by up to 20% if referring to modulated or non-modulated beams. Calculations of water-air mass stopping power ratios were also performed, with and without the inclusion of nuclear interactions, for modulated and non-modulated beams. The stopping power ratios do not depend significantly on proton energy, and this makes the effect of accounting for nuclear interactions in proton fluence calculation negligible. For the same reason the stopping power ratios for modulated beams do not appreciably differ from those referred to non-modulated beams with the same Emax at the same depth in water. The present results also show that the dependence of stopping power on energy spread and spatial divergence for proton beams is not negligible in some conditions. Some conclusions are drawn on the possibility of using the residual range as a descriptor of the proton beam quality for different experimental beam conditions.
Published: 2000

92. Polyunsaturated and Saturated Phospholipids in Mixed Bilayers: A Study from the Molecular Scale to the Lateral Lipid Organization

Author: Carla M. Rosetti and C. Pastorino
Subjects: Length scale, 1,2-Dipalmitoylphosphatidylcholine, Lipid Bilayers, Phospholipid, Membrane structure, Molecular Dynamics Simulation, Surfaces, Coatings and Films, chemistry.chemical_compound, Molecular dynamics, Crystallography, Membrane, chemistry, Chemical physics, Dipalmitoylphosphatidylcholine, Phosphatidylcholine, Phosphatidylcholines, Materials Chemistry, Molecule, lipids (amino acids, peptides, and proteins), Physical and Theoretical Chemistry, Phospholipids
Abstract: Polyunsaturated lipids are remarkably flexible molecules, with a great influence on the membrane structure and dynamics, affecting from mechanical properties to domain segregation. In this work, we studied phospholipid mixtures of dipalmitoylphosphatidylcholine (DPPC) and diunsaturated phosphatidylcholine lipids (diunsPC) of different lengths, by means of molecular dynamic simulations of a coarse-grained interaction model. These diunsPC:DPPC binary mixtures show nonideal behavior characterized by one mixed phase with composition fluctuations on a length scale of nanometers. Motivated by this observation, we studied comprehensively the characteristics of molecular structure as a function of the compositional gradient. We analyzed orientational order profiles, density distributions, and pair-pair correlation functions between the molecule residues. We observed that, in diunsPC-enriched regions, DPPC tails become expanded and disordered, especially toward the membrane center. On the other hand, in the more condensed DPPC-enriched patches, diunsaturated acyl chains become displaced toward the interface instead of stretching along the membrane normal. From the comparison of the two diunsPC lipids of different tail length, we measured that the presence of a longer terminal saturated segment induces better mixing with DPPC, and most interestingly eliminates the up-down composition correlation measured with the shorter tail-diunsPC. At molecular level, there is a reduced redistribution of densities and changes in the local order as a function of composition. We interpret these results as indicative that the packing incompatibility between polyunsaturated and saturated lipids rules their mixing behavior.
Published: 2011
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93. The self-organization of lipids and proteins of myelin at the membrane interface. Molecular factors underlying the microheterogeneity of domain segregation

Author: Carla M. Rosetti, Bruno Maggio, and Rafael G. Oliveira
Subjects: Biophysics, Surface pressure, Biochemistry, Biophysical Phenomena, Myelin, chemistry.chemical_compound, Membrane Lipids, Phase (matter), Biomembranes, Monolayer, medicine, Animals, Humans, Myelin Proteolipid Protein, Myelin Sheath, Langmuir monolayers, biology, Chemistry, Phosphatidylserine, Cell Biology, Myelin basic protein, Protein Structure, Tertiary, medicine.anatomical_structure, Membrane, Cholesterol, Fractals, Folch–Lees proteolipid, biology.protein, Galactocerebroside, lipids (amino acids, peptides, and proteins), Lipid–protein domains, Myelin Proteins
Abstract: The advances over the last 10 years on the understanding of myelin heterogeneity are reviewed. The main focus is on the applicability of Langmuir monolayers, Langmuir–Blodgett films and some associated techniques to unravelling the behaviour of interfaces formed with all the components of a natural membrane. Lipid–protein lateral segregation appears as a major driving force to determine surface patterns that can change under compression from circular domains to two-dimensional fractal structures. The major proteins of the myelin membrane induce lateral segregation in an otherwise homogeneous surface formed by the mixture of total myelin lipids. The lipid and protein components appear to distribute in the surface domains according to their charge, compressibility and relative molecular weight: myelin proteins, ganglioside GM1 and fluorescent lipid probes partition into liquid-expanded phase domains; other components such as phosphatidylserine and galactocerebroside partition into another liquid phase enriched in cholesterol. Simplified protein–lipid mixtures allow assessment of the participation of the major proteins in the two dimensional pattern development. One of the major myelin proteins, the Folch–Lees proteolipid, self-segregates into, and determines formation of, fractal-like patterns. The presence of the second major protein, myelin basic protein, leads to round liquid-expanded domains in the absence of Folch–Lees proteolipid and softens the boundaries of the fractal structures in its presence. The location of myelin basic protein in the interface is surface pressure sensitive, being slightly squeezed out at high surface pressure, allowing the fractal domains enriched in Folch–Lees proteolipid to evolve.
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94. The Folch–Lees proteolipid induces phase coexistence and transverse reorganization of lateral domains in myelin monolayers

Author: Bruno Maggio, Carla M. Rosetti, and Rafael G. Oliveira
Subjects: Proteolipid protein 1, Biophysics, Lipid–protein interface, Mole fraction, Biochemistry, Fluorescence, symbols.namesake, Myelin, Phase (matter), Monolayer, medicine, Animals, Myelin Proteolipid Protein, Myelin Sheath, Microscopy, Brewster's angle, Chemistry, Cell Biology, Brewster angle microscopy, Phase coexistence, Myelin proteolipid protein, Crystallography, Membrane, medicine.anatomical_structure, Folch–Lees proteolipid, Epifluorescence microscopy, symbols, Cattle, lipids (amino acids, peptides, and proteins)
Abstract: Solvent solubilized myelin membranes spread as monomolecular layers at the air–water interface show a heterogeneous pattern at all surface pressures. In order to asses the role of myelin protein and lipid components in the surface structuring we compared the topography, as seen by Brewster angle microscopy (BAM) and epifluorescence microscopy, of monolayers made from mixtures containing all myelin lipids (except gangliosides) and variable proportions of Folch–Lees proteolipid protein (PLP, the major protein component of myelin). The presence of the single PLP, in the absence of the other myelin proteins, can reproduce the surface pattern of the whole myelin extract films in a concentration-dependant manner. Moreover, a threshold mole fraction of PLP is necessary to induce the lipid–protein component reorganization leading to the appearance of a rigid (gray) phase, acting as a surface skeleton, at low surface pressures and of fractal clusters at high surface pressures. The average size of those clusters is also dependent on the PLP content in the monolayer and on the time elapsed from the moment of film spreading, as they apparently result from an irreversible lateral aggregation process. The transverse rearrangement of the monolayer occurring under compression was different in films with the highest and lowest PLP mole fractions tested.
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95. Eigenvalue spacings of the shell-model Hamiltonian

Author: M.W. Herman, M. Rosetti, Giorgio Giardina, Antonio Italiano, and G. Reffo
Subjects: Physics, Nuclear and High Energy Physics, Mathematical model, Binding energy, Fermi level, SHELL model, Mathematical Operators, symbols.namesake, Quantum electrodynamics, Quantum mechanics, Isotonic, symbols, Hamiltonian (quantum mechanics), Eigenvalues and eigenvectors
Abstract: The analysis of the eigenvalue spacing of the shell-model Hamiltonian has been performed and related systematics have been provided. Large differences between densities of particle and hole excitations and strong isotopic and isotonic effects are found. A method of estimating the particle-hole state density, which takes into account these effects, has been proposed.
Published: 1989

96. [Incidence of alcoholic hepatopathy in Versilia]

Author: G C, Saba, M, Rosetti, P L, Guidi, C, Sorbo, and F, Gaspa
Subjects: Male, Sex Factors, Italy, Hepatitis, Alcoholic, Liver Cirrhosis, Alcoholic, Humans, Female, Liver Diseases, Alcoholic
Published: 1984

97. [Partial relaxation of the right hemidiaphragm]

Author: M, ROSETTI
Subjects: Thoracic Diseases, Diaphragm, Endometriosis, Humans, Female, Respiration Disorders, Musculoskeletal System, Abdominal Muscles
Published: 1954

98. Neutron capture measurements on the s-process termination isotopes lead and bismuth

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

99. Recent results at n_TOF and future perspectives

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

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

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