The Effect of the New Nucleon-Nucleus Elastic Scattering Data in Lahet~TM Version 2.8 on Neutron Displacement Cross Section Calculations

摘要

The latest release of the medium-energy MonteCarlo transport code LAHET [1] includes a new nucleon-nucleuselastic scattering treatment based on a global medium-energyphenomenological optical-model potential. Implementation of thisnew model in LAHET allows nuclear elastic scattering forneutrons with energies greater than 15 MeV and for protons withenergies greater than 50 MeV. Previous investigations on theimpact of the new elastic scattering data revealed that the additionof the proton elastic scattering channel can lead to a significantincrease in the calculated damage energy under certain conditions.We report here results on the impact of the new elasticscattering data on calculated displacement cross sections invarious elements for neutrons with energies in the range 16 to3160 MeV. Calculated displacement cross sections at 20 MeV inlow-mass materials are in better agreement with SPECTER-calculated cross sections.