Abstract:

Fine structure splitting of lithiumlike ions Ni25+and Zn27+2p states was calculated by using MCDF (multi-configuration Dirac Fock) method. And the effects of transverse photon interaction, vacuum polarization correction and self-energy correction were considered in the calculation. Theoretical results of fine structure splitting of 2p states for Ni25+ and Zn27+ ions are 177512.60cm-1 and 239100.50cm-1, lower than the experimental values 16.5cm-1 and 13.7cm-1 respectively. The transverse photon interaction and self-energy correction are more important to the splitting while the vacuum polarization correction is ignorable relatively.

Key words: Ni25+ ion; Zn27+ ion; MCDF; transverse photon interaction; self-energy correction; fine structure