Isotopic Production Cross Sections in Proton-16O and Proton-12C Interactions for Energies from 10 MeV/u to 100 GeV/u

Overview

Journal Nucl Instrum Methods Phys Res B

Date 2023 Jan 16

PMID 36644589

Authors

Francis A Cucinotta

Sungmin Pak

Affiliations

Soon will be listed here.

Abstract

Proton interactions with O or C nuclei are frequent nuclear interaction leading to secondary radiation in tissues for space radiation and cancer therapy with protons or ion beams. The fragmentation of these ions by protons produces a large number of heavy ion (A>4) target or projectile fragments often with high ionization density. Here we develop an analytical model of energy dependent proton-O and proton-C cross sections for isotopic nuclei production. Using experimental data and a 2 order optical model an accurate formula for the absorption cross section from <10 MeV/u to >10 GeV/u is obtained. The energy dependence of the elemental and isotopic cross sections is modeled as multiplicities scaled to absorption cross section with average isotopic fractions estimated from experimental data. We show that this approach results in accurate analytic formulae for isotopic fragmentation cross sections over the full energy range in hadron therapy and space radiation protection studies.

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