TRANSITION ENERGY AND LIFETIME FOR THE GROUND-STATE HYPERFINE SPLITTING OF HIGH-Z LITHIUM-LIKE IONS

The ground-state hyperfine splitting values and the transition probabi lities between the hyperfine structure components of high-Z lithiumlik e ions are calculated in the range Z=49-83. The relativistic, nuclear, QED, and interelectronic interaction corrections are taken into accou nt. It is found that the Bohr-Weisskopf effect can be eliminated in a combination of the hyperfine splitting values of the hydrogenlike and lithiumlike ions of an isotope. This gives a possibility for testing t he QED effects in a combination of the strong electric and magnetic fi elds of the heavy nucleus. Using the experimental result for the 1s hy perfine splitting in Bi-209(82+), the 2s hyperfine splitting in Bi-209 (80+) is calculated to be Delta E=0.7976(2) eV. [S1050-2947(97)05412-7 ].