EPJ Web of Conferences (Jan 2023)

Prompt fission neutron spectra in the 235U(n,f) reaction

  • Mauss B.,
  • Taïeb J.,
  • Laurent B.,
  • Bélier G.,
  • Chatillon A.,
  • Étasse D.,
  • Morfouace P.,
  • Roig O.,
  • Devlin M.,
  • Gomez J.A.,
  • Haight R. C.,
  • Kelly K. J.,
  • O’Donnell J.M.,
  • Schmitt K.T.

DOI
https://doi.org/10.1051/epjconf/202328401006
Journal volume & issue
Vol. 284
p. 01006

Abstract

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Prompt fission neutron spectra (PFNS) are crucial to any neutronic simulation of critical nuclear systems. An experimental setup dedicated to the measurements of PFNS of very high accuracy was developed at the Los Alamos Neutron Science Center (LANSCE) some ten years ago. It allows for the measurement of PFNS for neutron induced fission at the Weapon Neutron Research (WNR) neutron source of the LANSCE. A measurement of the PFNS from the 235U(n,f) reaction was realized recently and is currently analyzed. Preliminary results are presented here and are compared to present nuclear data evaluations.