Heavy Ion Track-Structure Calculations for Radial Dose in Arbitrary Materials

Abstract

The d-ray theory of track structure is compared with experimental data for the radial dose from heavy ion irradiation. The effects of electron transmission and the angular dependence of secondary electron ejection are 95 included in the calculations. Several empirical formulas for electron range and energy are compared in a wide variety of materials in order to extend the application of the track-structure theory. The model of Rudd for the U secondary electronspectrum in proton collisions, which is based on a U modified classical kinematics binary encounter model at high energies and a 34 molecular promotion model at low energies, is employed. For heavier en projectiles, the secondary electron spectrum is found by scaling the effective on charge. Radial dose calculations for carbon, water, silicon, and gold are discussed. The theoretical data agreed well with the experimental data.