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Improved lead and bismuth (n,γ) cross sections and their astrophysical impact

Domingo-Pardo, C. and Abbondanno, U. and Aerts, G. and Alvarez, H. and Alvarez-Velarde, F. and Andriamonje, S. and Andrzejewski, J. and Assimakopoulos, P. and Audouin, L. and Badurek, G. and Baumann, P. and Becvar, F. and Berthoumieux, E. and Calvino, F. and Calviani, M. and Cano-Ott, D. and Capote, R. and Carrapico, C. and Cennini, P. and Chepel, V. and Chiaveri, E. and Colonna, N. and Cortes, G. and Couture, A. and Cox, J. and Dahlfors, M. and David, S. and Dillmann, I. and Dridi, W. and Duran, I. and Eleftheriadis, C. and Embid-Segura, M. and Ferrant, L. and Ferrari, A. and Ferreira-Marques, R. and Fujii, K. and Furman, W. and Goncalves, I. and Gonzalez-Romero, E. and Gramegna, F. and Guerrero, C. and Gunsing, F. and Haas, B. and Haight, R. and Heil, M. and Herrera-Martinez, A. and Igashira, M. and Jericha, E. and Kaeppeler, F. and Kadi, Y. and Karadimos, D. and Karamanis, D. and Kerveno, M. and Koehler, P. and Kossionides, E. and Krticka, M. and Lampoudis, C. and Leeb, H. and Lindote, A. and Lopes, I. and Lozano, M. and Lukic, S. and Marganiec, J. and Marrone, S. and Martinez, T. and Massimi, C. and Mastinu, P. and Mengoni, A. and Milazzo, P. M. and Moreau, C. and Mosconi, M. and Neves, F. and Oberhummer, H. and O'Brien, S. and Pancin, J. and Papachristodoulou, C. and Papadopoulos, C. and Paradela, C. and Patronis, N. and Pavlik, A. and Pavlopoulos, P. and Perrot, L. and Pigni, M. T. and Plag, R. and Plompen, A. and Plukis, A. and Poch, A. and Praena, J. and Pretel, C. and Quesada, J. and Rauscher, T. and Reifarth, R. and Rubbia, C. and Rudolf, G. and Rullhusen, P. and Salgado, J. and Santos, C. and Sarchiapone, L. and Savvidis, I. and Stephan, C. and Tagliente, G. and Tain, J. L. and Tassan-Got, L. and Tavora, L. and Terlizzi, R. and Vannini, G. and Vaz, P. and Ventura, A. and Villamarin, D. and Vincente, M. C. and Vlachoudis, V. and Vlastou, R. and Voss, F. and Walter, S. and Wiescher, M. and Wisshak, K.. (2008) Improved lead and bismuth (n,γ) cross sections and their astrophysical impact. In: International Conference on Nuclear Data for Science and Technology, Vol. 2. [Les Ulis], pp. 1311-1314.

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Official URL: http://edoc.unibas.ch/dok/A5253918

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Abstract

A series of (n,gamma) neutron capture measurements on the lead isotopes and bismuth have been carried Out at the CERN n_TOF installation in the neutron energy range from 1 eV up to 1 MeV. At n_TOF, contaminations due to scattered neutrons were reduced down to a negligible level by using improved gamma-ray detectors with very low neutron sensitivity. The background level has been determined precisely from a complementary measurement. Other experimental effects related to the electronic threshold in the detectors and the angular distribution of the prompt gamma-rays were investigated via Monte Carlo simulations and could be taken in account in the analysis of the capture data. With this set of measurements the energy differential (n,gamma) cross sections of Pb-204,Pb-206,Pb-207 and Bi-209 have been determined with good accuracy. The information obtained in this work becomes of interest for constraining r-process calculations and in particular for the Th/U cosmochronometer.
Faculties and Departments:05 Faculty of Science > Departement Physik > Former Organization Units Physics > Theoretische Physik Astrophysik (Thielemann)
UniBasel Contributors:Rauscher, Thomas
Item Type:Conference or Workshop Item
Conference or workshop item Subtype:Conference Paper
Publisher:EDP sciences
Note:Variant title: Improved lead and bismuth (n,gamma) cross sections and their astrophysical impact -- Publication type according to Uni Basel Research Database: Conference paper
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Last Modified:04 Sep 2015 14:31
Deposited On:22 Mar 2012 13:56

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