The Effect of Inelastic Collisions on the Slowing-Down Length of Neutrons in a Hydrogenous Mixture

Abstract

An expression for the slowing‐down length of neutrons in a hydrogenous mixture in which inelastic collisions occur is derived from the rigorous transport equation under the assumptions that (1) the masses of the nonhydrogen nuclei are infinite and (2) the inelastic scattering is of the type in which only discrete well‐defined energy levels of the target nucleus are involved. The result is applied to an iron‐water mixture.