Impact parameter dependence of the electronic energy loss of low- and intermediate-energy protons in collisions with solid state atoms

Abstract

Using the linear-response dielectric theory and local electron density approximation, we calculate the electronic energy loss of low- and intermediate-energy protons in collision with a solid atom as a function of the impact parameter. In these studies, the correlation and exchange interaction of the electron gas in solids is taken into consideration by using a local field correction dielectric function. Based on the formalism electronic stopping cross-sections of protons in solids are calculated, and the results are compared with experimental data and empirical results, as well as with other previous theoretical results.