A Model for Neutron Scattering Off Heavy Isotopes That Accounts for Thermal Agitation Effects

Mohamed Ouisloumen; Richard Sanchez

doi:dx.doi.org/10.13182/NSE89-186

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Home / Publications / Journals / Nuclear Science and Engineering / Volume 107 / Number 3

A Model for Neutron Scattering Off Heavy Isotopes That Accounts for Thermal Agitation Effects

Mohamed Ouisloumen, Richard Sanchez

Nuclear Science and Engineering / Volume 107 / Number 3 / March 1991 / Pages 189-200

Technical Paper / dx.doi.org/10.13182/NSE89-186

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The exact form of the differential scattering cross section for elastic scattering in an isotropic media with a Maxwellian velocity distribution is derived. Numerical examples show substantial neutron upscattering off heavy isotopes. Scattering resonances strongly affect neutron scattering, and it is found that for the lowest energy resonances of ²³⁸U, the average energy of the scattered neutron can be higher than the initial neutron energy.