Fine structures of some low-lying excited states for Be-like system
The fine structure energies and fine structure splittings of some low-lying excited states of the beryllium isoelectronic sequence (Z = 4-20) axe calculated with multi-configuration-interaction method and restricted variation method. The relativistic corrections and mass polarization are included. The results are in good agreement with other theoretical and experimental data.
fine structure relativistic correction berylliumlike ion