Photoelectron angular distributions of ns subshells of open-shell atoms as indicators of interchannel coupling: Sc 4s photoionization

Abstract

It is shown that the photoelectron-angular distribution asymmetry parameter beta, arising from ns photoionization in open-shell atoms, is quite a bit more sensitive to interchannel coupling than the integrated cross section. An example of 4s photoionization of atomic Sc is presented. It is demonstrated that this effect can occur throughout the periodic system.