Abstract

To understand the physical phenomena caused by heavy ion irradiation, we propose a radial dose simulation model, which is closer to reality than conventional models, and is independent of (without specifying) the species of incident ions. With the aim of disseminating our radial dose simulation results for use in radiology and radiation biology, we create a function to fit these results. Using this fitting function, anyone can calculate the radial dose distributions, which almost reproduce our simulation results, within a few seconds. In this function, incident ion energies up to ∼100 MeV/u and a stopping power up to ∼600 keV/μm are covered. Furthermore, using this model, we discuss the incident ion energy dependence on the radial dose, according to incident ion impact ionization cross-sections.

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