Total ionization cross sections in particle and antiparticle collisions with rare gases

Abstract

In this contribution we analyze the total ionization cross sectionsby impact of electrons, positrons, protons and antiprotons in Ne,Ar, Kr and Xe. We compare theoretical results using the continuumdistorted wave eikonal initial state approximation with a detailedcompilation of the available experimental data for the fourprojectiles in each target. The charge and mass effects, and theconvergence at intermediate energies are discussed, which areimportant issues for antiparticle normalization. We remark theinfluence of the post-collisional Auger-like electron emission,which is decisive to describe the total ionization of Kr and Xe atimpact velocities above 9 a.u.