APPLICATION OF THE RELATIVISTIC RANDOM-PHASE APPROXIMATION TO ATOMS OF THE NEON ISOELECTRONIC SEQUENCE

The relativistic random-phase approximation is applied to the calculation of excitation energies and oscillator strengths for the 2p6 S01-2p53s P11, P13 and 2p6 S01-2p53d P11, P13, D13 transitions of elements of the neon isoelectronic sequence. The results are compared with those of other calculations and experiment. The variation of oscillator strength along the isoelectronic sequence is depicted for each of the transitions. Anomalous behavior occurs which is attributed to level crossings. © 1979 The American Physical Society.