Binding energies of the 1s² 2s 2p ³P_0,2 states of berylliumlike xenon

2018/01/07 by A. V. Malyshev, Malyshev, A. V., D. A. Glazov +11
Physics and Astronomy · #Advanced Chemical Physics Studies #Atomic Physics (physics.atom-ph) #Atomic and Molecular Physics #FOS: Physical sciences #Nuclear physics research studies

paper · pdf · doi:10.48550/arxiv.1801.02258

openalex publication_date 2018/01/07 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

Binding energies of the ³P₀ and ³P₂ levels of the 1s² 2s 2p electron configuration in berylliumlike xenon are rigorously evaluated using ab initio QED approach. All relevant one- and many-electron QED contributions are accounted for up to the second order of the perturbation theory. The interelectronic-interaction effects of the third and higher orders are considered within the Breit approximation. Nuclear recoil effect is taken into account as well. In addition, we study all possible levels of the configuration 1s² 2s 2p, namely ¹P₁ and ³P_0,1,2, by means of the configuration-interaction Dirac-Fock-Sturm method in berylliumlike neon, iron, and xenon. In this case the QED effects are treated approximately within the model QED approach. The obtained theoretical predictions are compared with the results of previous relativistic calculations and high-precision measurements.

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