Abstract
The ground-state hyperfine splitting values of high- Z boronlike ions are calculated. Calculation of the interelectronic-interaction contribution is based on a combination of the 1 / Z perturbation theory and the large-scale configuration–interaction Dirac–Fock–Sturm method. The screened QED corrections are evaluated utilizing an effective screening potential approach. Total hyperfine splitting energies are presented for several B-like ions of particular interest: 45Sc 16+, 57Fe 21+, 207Pb 77+, and 209Bi 78+. For lead and bismuth the experimental values of the 1 s hyperfine splitting are employed to improve significantly the theoretical results by reducing the uncertainty due to the nuclear effects.
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