Neutron-induced cross sections of actinides via the surrogate-reaction method
1 CENBG, Chemin du Solarium, BP. 120, 33175 Gradignan, France
2 CEA-Cadarache, DEN/DER/SPRC/LEPh, 13108 Saint Paul lez Durance, France
3 University of Oslo, Department of Physics, PO Box 1048, Blindem 0316 Oslo, Norway
4 IPN Orsay, 15 rue G. Clémenceau, 91191 Gif-sur-Yvette Cedex, France
5 CEA Saclay, DSM/Irfu, 91191 Gif-sur-Yvette Cedex, France
6 iThemba LABS, PO Box 722, 7129 Somerset West, South Africa
7 CEA, DAM, DIF, 91297 Arpajon, France
Published online: 13 December 2013
The surrogate-reaction method is an indirect way of determining cross sections for reactions that proceed through a compound nucleus. This technique may enable neutron-induced cross sections to be extracted for short-lived nuclei that otherwise cannot be measured. However, the validity of the surrogate method has to be investigated. In particular, the absence of a compound nucleus formation and the Jπ dependence of the decay probabilities may question the method. In this work we study the reactions 238U(d,p)239U, 238U(3He,t)238Np, 238U(3He,4He)237U as surrogates for neutron-induced reactions on 238U, 237Np and 236U, respectively, for which good quality data exist. The experimental set-up enabled the measurement of fission and gamma-decay probabilities. The first results are hereby presented.
© Owned by the authors, published by EDP Sciences, 2013
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