Autoionizing levels of zinc from the multiconfiguration relativistic random-phase approximation

Abstract

The multiconfiguration relativistic random-phase-approximation theory is applied to autoionizing levels of the neutral zinc atom between 4${\mathit{s}}_{1/2}$ and 4${\mathit{p}}_{3/2}$ ionization thresholds. There are five Rydberg series of doubly excited states that manifest themselves as autoionization resonances in the 4s photoionization cross section. Theoretical predictions for the positions and profiles of the autoionization resonances are in excellent agreement with experiment.