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QED calculation of the n=1 and n=2 energy levels in He-like ions | | A. N. Artemyev
; V. M. Shabaev
; V. A. Yerokhin
; G. Plunien
; G.Soff
; | | Date: |
15 Dec 2004 | | Subject: | Atomic Physics | physics.atom-ph | | Abstract: | We perform ab initio QED calculations of energy levels for the $n=1$ and $n=2$ states of He-like ions with the nuclear charge in the range $Z = 12$-100. The complete set of two-electron QED corrections is evaluated to all orders in the parameter $aZ$. Uncalculated contributions to energy levels come through orders $alpha^3 (aZ)^2$, $alpha^2 (aZ)^7$, and higher. The calculation presented is the first treatment for excited states of He-like ions complete through order $alpha^2 (aZ)^4$. A significant improvement in accuracy of theoretical predictions is achieved, especially in the high-$Z$ region. | | Source: | arXiv, physics/0501079 | | Services: | Forum | Review | PDF | Favorites | |
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