| Thème(s) : |
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Physique/Physique Nucléaire Expérimentale
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| Titre : |
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Study of the surrogate-reaction method applied to neutron-induced capture cross sections |
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| Auteur : |
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G. Boutoux1, B. Jurado1, V. Méot2, O. Roig2, L. Mathieu1, M. Aïche1, G. Barreau1, N. Capellan1, I. Companis1, S. Czajkowski1, K.-H. Schmidt1, J.T. Burked, A. Bail2, J.M. Daugas2, T. Faul2, P. Morel2, N. Pillet2, C. Théroine2, X. Derkx3, O. Sérot4, I. Matéa5, L. Tassan-Got5 |
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| Laboratoire : |
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| équipe(s) de recherche : |
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ACEN |
| Résumé : |
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174Yb(3He,αγ )173Yb* and 174Yb(3He,pγ )176Lu*, respectively. For the first time, the gamma-decay probabilities have been obtained with two independent experimental methods based on the use of C6D6 scintillators and Germanium detectors. Our results for the radiative-capture cross sections are several times higher than the corresponding neutron-induced data. To explain these differences, we have used our gamma-decay probabilities to extract rather direct information on the spin distributions populated in the transfer reactions used. They are about two times wider and the mean values are 3 to 4 ¯h higher than the ones populated in the neutron-induced reactions. As a consequence, in the transfer reactions neutron emission to the ground and first excited states of the residual nucleus is strongly suppressed and gamma-decay is considerably enhanced. |
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| Type de publication : |
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Articles dans des revues avec comité de lecture |
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Date de publication
ou d'écriture : |
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2012 |
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| Nom du périodique : |
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| Physics Letters B (Phys. Lett. B) |
| Publisher |
Elsevier |
| ISSN |
0370-2693 |
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| Volume : |
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712 |
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| Page/Article : |
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319-325 |
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| Identifiant local : |
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GANIL 2012-064 A |
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| Mot(s)-clé(s) : |
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Surrogate-reaction method – Neutron-induced capture cross section – Gamma-decay probability – Angular-momentum distribution |
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