Ground-state hyperfine structure of H-, Li-, and B-like ions in middle-Z region

Abstract

The hyperfine splitting of the ground state of H-, Li-, and B-like ions is investigated in details within the range of nuclear numbers Z = 7-28. The rigorous QED approach together with the large-scale configuration-interaction Dirac-Fock-Sturm method are employed for the evaluation of the interelectronic-interaction contributions of first and higher orders in 1/Z. The screened QED corrections are evaluated to all orders in (αZ) utilizing an effective potential approach. The influence of nuclear magnetization distribution is taken into account within the single-particle nuclear model. The specific differences between the hyperfine-structure level shifts of H- and Li-like ions, where the uncertainties associated with the nuclear structure corrections are significantly reduced, are also calculated.

22 pages, 11 tables, 2 figures

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• Relativistic and QED corrections to the g factor of Li-like ions
• QED calculation of the 2p3/2-2p1/2 transition energy in five-electron ion of argon
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• Laser spectroscopy of hyperfine structure in highly-charged ions: a test of QED at high fields

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