Auger processes of the Rydberg series for Be-like oxygen ions

Abstract

The relativistic energies and Auger transition rates for the Rydberg series 1s23lnl′ 1,3F° (n = 3–6) of Be-like oxygen ions are determined by the saddle-point variation and saddle-point complex-rotation methods. Relativistic corrections and mass polarization effects are considered to improve the computational accuracy of the energy. The Auger branching ratios of the 1s22s and 1s22p decay channels for these Rydberg series are calculated. The accurate Auger electron energies are compared with high-resolution electron spectroscopy. The results will provide useful data for the identification of spectral lines arising from the Be-like oxygen ions and experimental studies in future work.