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

Abbondanno, U. and Aerts, G. and Alvarez-Velarde, F. and Alvarez-Pol, H. and Andriamonje, S. and Andrzejewski, J. and Badurek, G. and Baumann, P. and Becvar, F. and Benlliure, J. and Berthoumieux, E. and Calvino, F. and Cano-Ott, D. and Capote, R. and Cennini, P. and Chepel, V. and Chiaveri, E. and Colonna, N. and Cortes, G. and Cortina, D. and Couture, A. and Cox, J. and Dababneh, S. and Dahlfors, M. and David, S. and Dolfini, R. and Domingo-Pardo, C. and Duran, I. and Embid-Segura, M. and Ferrant, L. and Ferrari, A. and Ferreira-Marques, R. and Frais-Koelbl, H. and Furman, W. and Goncalves, I. and Gallino, R. and Gonzalez-Romero, E. and Goverdovski, A. and Gramegna, F. and Griesmayer, E. and Gunsing, F. and Haas, B. and Haight, R. and Heil, M. and Herrera-Martinez, A. and Isaev, S. and Jericha, E. and Kappeler, F. and Kadi, Y. and Karadimos, D. and Kerveno, M. and Ketlerov, V. and Koehler, P. and Konovalov, V. 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-Val, J. and Mastinu, P. and Mengoni, A. and Milazzo, P. M. and Molina-Coballes, A. and Moreau, C. and Mosconi, M. and Neves, F. and Oberhummer, H. and O`Brien, S. and Pancin, J. and Papaevangelou, T. and Paradela, C. and Pavlik, A. and Pavlopoulos, P. and Perlado, J. M. and Perrot, L. and Pignatari, M. and Plag, R. and Plompen, A. and Plukis, A. and Poch, A. and Policarpo, A. and Pretel, C. and Quesada, J. and Raman, S. and Rapp, W. and Rauscher, T. and Reifarth, R. and Rosetti, M. and Rubbia, C. and Rudolf, G. and Rullhusen, P. and Salgado, J. and Soares, J. C. and Stephan, C. and Tagliente, G. and Tain, J. 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 Voss, F. and Wendler, H. and Wiescher, M. and Wisshak, K.. (2004) Neutron capture cross section measurement of ¹⁵¹Sm at the CERN neutron time of flight facility (n_TOF). Physical review letters, Vol. 93, H. 16 , 161103, 5 S..

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Official URL: http://edoc.unibas.ch/dok/A5253972

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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.
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 Physical Society
ISSN:0031-9007
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 13:53

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