EPJ Web of Conferences (Dec 2013)

Neutron-induced cross sections of actinides via the surrogate-reaction method

  • Ducasse Q.,
  • Jurado B.,
  • Aiche M.,
  • Tornyi T.,
  • Görgen A.,
  • Wilson J.N.,
  • Barreau G.,
  • Companis I.,
  • Czajkowski S.,
  • Giacoppo F.,
  • Gunsing F.,
  • Guttormsen M.,
  • Larsen A.C.,
  • Lebois M.,
  • Matarranz J.,
  • Renstrøm T.,
  • Rose S.,
  • Siem S.,
  • Tsekhanovich I.,
  • Tveten G.M.,
  • Hagen T.W.,
  • Wiedeking M.,
  • Serot O.,
  • Boutoux G.,
  • Huu-Tai P. Chau,
  • Méot V.,
  • Roig O.

DOI
https://doi.org/10.1051/epjconf/20136208002
Journal volume & issue
Vol. 62
p. 08002

Abstract

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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.