Effects of ion-nucleus sizes on the electronic stopping power for heavy ions in solids

Abstract

A theoretical study of the electronic stopping power for heavy ions moving in solids is made by using the linear-response dielectric theory and the method of the local-density approximation. The effects of the ion-nucleus sizes on the stopping power are considered by excluding excitations of the target electrons in the close neighborhood of the ion nucleus. The Brandt–Kitagawa model is used to determine the distributions of electrons bound to the ion. Finally, we compare our calculations with experimental data and empirical results of Ziegler, Biersack and Littmark (ZBL).