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Evaluation of the low-lying energy levels of two- and three-electron configurations for multi-charged ions

O. Yu. Andreev·L. Labzowsky·G. Plunien·G. Soff
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Abstract

Accurate QED evaluations of the one- and two-photon interelectron interaction for low lying two- and three-electron configurations for ions with nuclear charge numbers $60\le Z \le 93$ are performed. The three-photon interaction is also partly taken into account. The Coulomb gauge is employed. The results are compared with available experimental data and with different calculations. A detailed investigation of the behaviour of the energy levels of the configurations $1s_{1/2}2s_{1/2} {}^1 S_0$, $1s_{1/2}2p_{1/2} {}^3 P_0$ near the crossing points Z=64 and Z=92 is carried out. The crossing points are important for the future experimental search for parity nonconserving (PNC) effects in highly charged ions.

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O. Yu. Andreev, L. Labzowsky, G. Plunien, G. Soff. 2002-07-12. Evaluation of the low-lying energy levels of two- and three-electron configurations for multi-charged ions. https://doi.org/10.1103/physreva.67.012503

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