Proton Recoil Measurements of the ~252Cf Fission Neutron Leakage Spectrum from an Iron Sphere

摘要

Proton recoil measurements of the ~252Cf fission neutorn leakdate spectrum form a 50-cm-diam iron sphere are performed as a means of checking the degree to which the ENDF/B-VI iron inelastic scattering cross section resolves the well-known discrepancy between predicted and observed neutron transport. These measurements wre performed at the National Institute of Standards and Technology using a rotating proton-recoil spectrometer over an energy range fo 50 keV to 4.5 MeV. In addition, Monte Carlo neutron transport calculations wee performed of the iron-moderated neutron spectrum generated in the experiment.