Theory of Post-Collision Interaction at High Excess Energies

Abstract

Post-collision interaction between an Auger electron and electrons created by photon- or electron-impact ionization of atoms is theoretically studied treating all the electronic coordinates as dynamical variables. Electronic wave packets arc explicitly considered to properly include the wave-mechanical aspect of the process. Continuity and smoothness of the electronic wavefunction at the points where the Auger electron overtakes the ejected or scattered electrons leads an effect of the post-collision interaclion. A simple analytical formula is derived on the Auger line profile.