Atomic ionization radii using Janak's theorem

Accurate calculations of the atomic ionization radius defined as the critic al radius at which a spherically confined atom undergoes ionization are rep orted for the atoms He-Ca using the Kohn-Sham variational method in conjunc tion with the Slater transition state approximation to Janak's theorem of t he density functional theory. (C) 2000 Elsevier Science B.V. All rights res erved.