Projectile-charge dependence of stopping powers

Abstract

Recent stopping-power data of solids with atomic number $Z_2$ ranging from 13 to 79 for ions ranging in atomic number $Z_1$ from 1 to 9 and in velocity from $7v_0$ to $12v_0$ are analyzed in terms of $Z_1^3$ effects and effective ion charges. They are found to be consistent with current theory. High-velocity forms of the $Z_1^3$-proportional stopping-power contributions are calculated by the method of moment integrals.