Microdosimetric Analysis of Proton Induced Reactions in Silicon and Gallium Arsenide

Microdosimetric comparisions of volumes of silicon and gallium arsenide exposed to protons of 25 to 300 MeV have been performed using a computer simulation. Significant differences between silicon and gallium arsenide are seen in the energy-deposition spectra. The effect of the surrounding material, the energy and mass spectra of the recoiling nuclei, and the effect of scaling are also presented and discussed.