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Vacuum polarization calculations for hydrogenlike and alkalilike ions

J. Sapirstein, K. T. Cheng

physics.atom-pharXiv:physics/0308022

Abstract

Complete vacuum polarization calculations incorporating finite nuclear size are presented for hydrogenic ions with principal quantum numbers n=1-5. Lithiumlike, sodiumlike, and copperlike ions are also treated starting with Kohn-Sham potentials, and including first-order screening corrections. In both cases dominant Uehling terms are calculated with high accuracy, and smaller Wichmann- Kroll terms are obtained using numerical electron Green's functions.

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