Comparison between Firsov and Lindhard-Scharff Schiott (LSS) stopping power models.

Abstract

This work presents a comparison between Firsov and the Lindhard-Scharff-Schiott (LSS) stopping power models and experimental data. Firstly the background and the results of the Thomas-Fermi model on which the Firsov and Lindhard-Sharff-Schiott (LSS) stopping power models are based are discussed before presenting the Firsov and LSS models and comparing between them. In a second time, the results of the stopping powers of some projectiles, obtained by using LSS model, Firsov's model, the SRIM program and available data, each one in 3 or 4 different targets are discussed, and we finish by discussing the Z oscillations which are due to the shell structure of the atoms.