Study of the surrogate-reaction method applied to neutron-induced capture cross sections

Abstract : 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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Article dans une revue
Physics Letters B, Elsevier, 2012, 712, pp.319-325. <10.1016/j.physletb.2012.05.012>


http://hal.in2p3.fr/in2p3-00701449
Contributeur : Michel Lion <>
Soumis le : vendredi 25 mai 2012 - 14:19:37
Dernière modification le : vendredi 11 septembre 2015 - 09:55:46

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G. Boutoux, B. Jurado, V. Méot, O. Roig, L. Mathieu, et al.. Study of the surrogate-reaction method applied to neutron-induced capture cross sections. Physics Letters B, Elsevier, 2012, 712, pp.319-325. <10.1016/j.physletb.2012.05.012>. <in2p3-00701449>

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