Abstract

With a relatively simple distorted-wave model, in which the ejected and the scattered electrons see different residual systems depending on their energies, in this paper we show the calculation of the CPE cross sections for electron impact ionization of He, Ne and Ar. Combined with the ‘maximum interference’ exchange approximation, this model gives results which for Ne and Ar are in better agreement with the experiment than the other existing theoretical models.

Keywords

electron impact ionization, noble gases, quantum models for atomic collisions