Second Born fully differential cross sections for direct ionization of H(1s) by proton and antiproton collisions

Abstract

Fully differential cross sections for ionization of H(1s) atoms by collision with protons and antiprotons are calculated within the second-order Born closure approximation. The calculations are performed for emission of electrons with different energies into planes, moving from the scattering to the perpendicular planes at different impact energies and small scattering angles from which a significant contribution to the total cross section comes. The influence of the projectile’s charge and the second Born term on the calculations varies according to the incident energy, emission energy, and the scattering angle.