Sensitivity studies of spin cut-off models on fission fragment observables
1 CEA, DEN, DER, SPRC, F-13108, Saint Paul Lez Durance, France
2 CEA, DSM, Irfu, SPhN F-91191, Gif-sur-Yvette, France
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Published online: 15 March 2016
A fission fragment de-excitation code, FIFRELIN, is being developed at CEA Cadarache. It allows probing the characteristics of the prompt emitted particles, neutrons and gammas, during the de-excitation process of fully accelerated fission fragments. The knowledge of the initial states of the fragments is important to accurately reproduce the fission fragment observables. In this paper a sensitivity study of various spin cut-off models, completely defining the initial fission fragment angular momentum distribution has been performed. This study shows that the choice of the model has a significant impact on gamma observables such as spectrum and multiplicity and almost none on the neutron observables.
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