Monte Carlo Calculations on Nuclear Spallation Reactions with High Energy Protons above Several GeV

Abstract

Monte Carlo calculations on nuclear spallation reactions with high energy protons were performed by using a model for intranuclear cascade reactions in the energy range up to 1000 GeV and a nuclear model for the evaporation process. The scale factor of the characteristic particle production distance δ and the nuclear density reduction factor D were used in the cascade model in order to simulate the energy dependence of particle production from heavy target nuclei and mass-yield distributions for spallation products in the incident proton energy range above several GeV. The general characteristics of calculated mass-yield curves were determined primarily by the two parameters δ and D and they are in reasonable agreement with experimental data.