Energies of 1s221q (1≤q≤8) states for Z≤60 with a combined configuration interaction and many-body perturbation theory approach

Using a combined configuration interaction and many-body perturbation theory approach, we calculate the level energies of 1s(2)2l(q) (1 <= q <= 8) states for ions with Z <= 60. Comparison with experimental results wherever available indicates that the calculated energies are accurate to within a few 1000 cm(-1) for all ions except for near-neutral systems which are less than 2-3 times ionized. The ground state ionization energies of these ions are also reported and compared with experimental values. 2005 Elsevier Inc. All rights reserved.