Intranuclear-Cascade Calculation of the Secondary Nucleon Spectra from Nucleon-Nucleus Interactions in the Energy Range 340 to 2900 MeV and Comparisons with Experiment

Abstract

Total nonelastic cross sections and the nucleon spectra fron continuum-state transitions for protons on complex nuclei are calculated using the intranuclear-cascade approach. Comparisons with experiment are made over the energy range 340-2900 MeV. The diffuseness of the nuclear surface, the energy distribution of the bound nucleons, and the exclusion principle are taken into account in the model of the nucleus, while experimentally determined free-particle elastic, inelastic, and differential cross sections are utilized in the calculation of the particle-particle reactions assumed to take place inside the nucleus. The Sternheimer-Lindenbaum isobar model is used in describing all pion-production processes. All but two of the comparisons with experiment are made on an absolute basis. The theoretical nonelastic cross sections and the theoretical secondary-particle spectra resulting from continuum-state transitions are shown to be in reasonable agreement with experimental data over the broad energy range considered. The effect of pion production and the effect of the diffuse nuclear boundary are illustrated for a few cases. The quasifree peak is shown to be dominated by single-scattering events that take place inside the nucleus.