Positron and electron impact multiple-ionization of rare gases

C. C. MONTANARI; J. E. MIRAGLIA

Toledo

Congreso; XXIX International Conference on Photonic, Electronic, and Atomic Collisions; 2015

We present a theoretical treatment of the multiple-ionization by light projectiles, which is valid in anextended energy range (from near threshold to the keV region). It covers the direct ionization and the postcollisionalelectron emission, and takes into account charge and mass effects: projectile trajectory, finite momentumtransferred, energy threshold. Our results for positron and electron-impact on Ne, Ar, Kr and Xe, are comparedwith a detailed compilation of experimental data of multiple and of total ionization cross sections. Thesevalues and previous ones for antiproton and proton-impact let us to present an extended picture of the particleantiparticlemultiple-ionization.