KINETICS CALCULATIONS FOR NEAR NE-LIKE IONS

The purpose of the present work is to systematically test the sensitivity of steady-state kinetics to variations in the atomic modeling for plasmas in a near Nc-like state. The effect of 2s vacancies autoionizing states, high lying excited states and electron density is studied. In addition, kinetics calculations using configuration average modeling are compared to similar calculations using detailed fine structure levels. Results are presented mainly for the charge state distribution of selenium. However, relative gain coefficients are calculated for both selenium and silver. These calculations predict somewhat larger gains for the J = 2 --> 1 lasing transitions than for the 0 --> 1 transitions, which agrees with experimental trends.