Calculation of the Energy Levels to High States in Atomic Oxygen

Energy levels of configuration 2s 2 2p 3 ( 4 S o , 2 D o , 2 P o ) nl in atomic oxygen are reported within the weakest bound electron potential model theory (WBEPM theory). In the calculations interactions between different series are explicitly accounted for by introducing a combined quantum defect formula. The present results show a reasonably good agreement with the critically evaluated NIST data. Furthermore, predictions of energy levels are extended to high Rydberg states.