Atomic and molecular calculations with the pseudopotential method. IX. One-valence-electron photoionization cross sections using Hellmann-like potentials

Abstract

An l‐independent Hellmann‐like pseudopotential method is used to investigate the photoionization cross section for the $\mathrm{ns‐\epsilon \; p}$ transitions of the alkali atoms Na, K, Rb, and Cs for the continuum energy range 0–2.0 Ry. The results are compared to previous pseudopotential calculations, other theoretical calculations, and to observed values.