EBS triple differential cross sections for the coplanar asymmetric ionisation of H(2s) by fast electrons

The authors present first Born, second Born, EBS and EBS' triple differential cross sections for the ionisation of H(2s) by fast electrons, for the case of a coplanar asymmetric geometry. Detailed calculations are preformed for an incident of 250 eV, and ejected electron energy of 5 eV and several scattering angles. Their results are markedly different from the corresponding ones obtained for the ionisation of H(1s). Second-order and third-order effects are significant, but not higher-order effects.SCOPUS: ar.j