KINETICS CALCULATIONS FOR NEAR NE-LIKE IONS

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