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Two-electron self-energy contribution to the ground state energy of heliumlike ions

V. A. Yerokhin, A. N. Artemyev, V. M. Shabaev

physics.atom-pharXiv:physics/9707009

Abstract

The two-electron self-energy contribution to the ground state energy of heliumlike ions is calculated both for a point nucleus and an extended nucleus in a wide interval of Z. All the two-electron contributions are compiled to obtain most accurate values for the two-electron part of the ground state energy of heliumlike ions in the range Z=20-100. The theoretical value of the ground state energy of heliumlike uranium, based on currently available theory, is evaluated to be -261382.9(8) eV, without higher order one-electron QED corrections.

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