Relativistic energy, oscillator strengths and transition rates of the 1s(2)2lnl S-1(m) (n=2-6, m1-5) states for Be-like system

摘要

Variational calculations are carried out with a multiconfiguration-interaction wave function to obtain the relativistic energies of the 1s(2)2lnl S-1(m) (n = 2-6, m1-5) states for the beryllium isoelectronic sequence (Z = 4-10). Relativistic corrections and the mass polarization effects are evaluated with the first-order perturbation theory. The identifications of the energy levels for 1s(2)2lnl S-1(m) (n = 2-6, m1-5) states in the Be-like ions are reported. The oscillator strengths, transition rates and wavelengths are also calculated. The calculated results are compared with other theoretical and experimental data in the literature.