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Neutron capture cross section of ⁹⁰Zr : bottleneck in the s-process reaction flow

Tagliente, G. and Fujii, K. and Milazzo, P. M. and Moreau, C. and Aerts, G. and Abbondanno, U. 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 Bisterzo, S. 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 Dillman, I. and Domingo-Pardo, C. and Dridi, W. and Duran, I. and Eleftheriadis, C. and Embid-Segura, M. and Ferrant, L. and Ferrari, A. and Ferreira-Marques, R. and Furman, W. and Gallino, R. 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 Lamboudis, 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 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 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 Wendler, H. and Wiescher, M. and Wisshak, K.. (2008) Neutron capture cross section of ⁹⁰Zr : bottleneck in the s-process reaction flow. Physical review. C, Nuclear physics, Vol. 77, H. 3 , 035802, 9 S..

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Official URL: http://edoc.unibas.ch/dok/A5253873

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Abstract

The neutron capture cross sections of the Zr isotopes have important implications in nuclear astrophysics and for reactor design. The small cross section of the neutron magic nucleus Zr-90, which accounts for more than 50 for the stellar s-process, because it acts as a bottleneck in the neutron capture chain between the Fe seed and the heavier isotopes. The same element, Zr, also is an important component of the structural materials used in traditional and advanced nuclear reactors. The (n, gamma) cross section has been measured at CERN, using the n_TOF spallation neutron source. In total, 45 resonances could be resolved in the neutron energy range below 70 keV, 10 being observed for the first time thanks to the high resolution and low backgrounds at n_TOF. On average, the Gamma(gamma) widths obtained in resonance analyses with the R-matrix code SAMMY were 15 these results, the accuracy of the Maxwellian averaged cross section for s-process calculations has been improved by more than a factor of 2.
Faculties and Departments:05 Faculty of Science > Departement Physik > Physik > Theoretische Physik Astrophysik (Thielemann)
UniBasel Contributors:Rauscher, Thomas
Item Type:Article, refereed
Article Subtype:Research Article
Bibsysno:Link to catalogue
Publisher:American Institute of Physics
ISSN:0556-2813
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:22 Mar 2012 14:26
Deposited On:22 Mar 2012 13:49

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