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Modeling of the n + 242Pu Reactions for Fast Reactor Applications

E. Rich, A. Tudora, G. Noguere, J. Tommasi, J.-F. Lebrat

Nuclear Science and Engineering / Volume 162 / Number 2 / June 2009 / Pages 178-191

Technical Note /

Interpretations of the MUSE-4, PROFIL, and PROFIL-2 experiments with the latest version of the European library JEFF-3.1 have delivered reliable integral trends of neutron-induced reactions on 242Pu. This paper reports the improved modeling of the fission and capture cross sections in the unresolved resonance and "continuum" energy ranges. The focus of this study is the description of the fast energy range with average neutron properties deduced from the statistical analysis of the resolved resonance parameters of the nuclear systems n + 239Pu, n + 240Pu, n + 241Pu, and n + 242Pu.

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