Calculation of quasi-degenerate energy levels of two-electron ions

Abstract

Accurate QED calculations of the interelectron interaction corrections for the $(1s2p)2{}^1{P}_1$, $(1s2p)2{}^3{P}_1$ two-electron configurations for ions with nuclear charge numbers $10\le Z\le 92$ are performed within the line profile approach. Total energies of these configurations are evaluated. Employing the fully relativistic treatment based on the {$j$--$j$} coupling scheme these energy levels become quasi-degenerate in the region $Z\le 40$. To treat such states within the framework of QED we utilize the line profile approach. The calculations are performed within the Coulomb gauge.

arXiv comment22 pages, 11 figures

References in corpus (6)

• Two-time Green function method in quantum electrodynamics of high-Z few-electron atoms
• Two-loop self-energy correction in high-Z hydrogen-like ions
• Coordinate-space approach to the bound-electron self-energy: Self-Energy screening calculation
• Evaluation of the low-lying energy levels of two- and three-electron configurations for multi-charged ions
• Contribution of the screened self-energy to the Lamb shift of quasidegenerate states
• QED theory of transition probabilities and line profiles in highly-charged ions

Cited by in corpus (7)

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• QED calculations of energy levels of helium-like ions with $5\le Z\le 30$
• QED calculations of the $n=2$ to $n=1$ x-ray transition energies in middle-$Z$ heliumlike ions
• QED Effects in Heavy Few-Electron Ions
• QED calculation of transition probabilities in two-electron ions
• QED calculation of electron-electron correlation effects in heliumlike ions
• Complex-scaled ab initio QED approach to autoionizing states