Relativistic many-body calculations of energies of nÄ3 states in aluminumlike ions
نویسندگان
چکیده
Energies of 3l3l83l9 states of aluminumlike ions with Z514–100 are evaluated to second order in relativistic many-body perturbation theory starting from a 1s2s2p Dirac-Fock potential. Intrinsic three-particle contributions to the energy are included in the present calculation and found to contribute about 10–20 % of the total second-order energy. Corrections for the frequency-dependent Breit interaction and the Lamb shift are included in lowest order. A detailed discussion of contributions to the energy levels is given for aluminumlike germanium (Z532). Comparisons are made with available experimental data. We obtain excellent agreement for term splitting, even for low-Z ions. These calculations are presented as a theoretical benchmark for comparison with experiment and theory.
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