EPJ Web of Conferences (Jan 2017)

The 235U prompt fission neutron spectrum measured by the Chi-Nu project at LANSCE

  • Gomez J.A.,
  • Devlin M.,
  • Haight R.C.,
  • O'Donnell J.M.,
  • Lee H.Y.,
  • Mosby S.M.,
  • Taddeucci T.N.,
  • Kelly K.J.,
  • Fotiades N.,
  • Neudecker D.,
  • White M.C.,
  • Talou P.,
  • Rising M.E.,
  • Solomon C.J.,
  • Wu C.Y.,
  • Bucher B.,
  • Buckner M.Q.,
  • Henderson R.A.

DOI
https://doi.org/10.1051/epjconf/201714604040
Journal volume & issue
Vol. 146
p. 04040

Abstract

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The Chi-Nu experiment aims to accurately measure the prompt fission neutron spectrum for the major actinides. At the Los Alamos Neutron Science Center (LANSCE), fission can be induced with neutrons ranging from 0.7 MeV and above. Using a two arm time-of-flight (TOF) technique, the fission neutrons are measured in one of two arrays: a 22-6Li glass array for lower energies, or a 54-liquid scintillator array for outgoing energies of 0.5 MeV and greater. Presented here are the collaboration's preliminary efforts at measuring the 235U PFNS.