Gain Coefficient Calculation for Short Wave Laser Emission from Sodium like Co

Abstract

Level structure, oscillator strengths, transition probabilities and radiative life times are evaluated for 1s 2 2s 2 2p 6 3l, 4l, 5l (l = 0, 1, 2, 3, 4) states in sodium like Co 16+ . The calculations are carried out using COWAN code. The calculations made were compared with other results in literature where a good agreement is found. We also report on some unpublished energy values and oscillator strengths. Our results are used in the calculation of reduced population of 21 fine structure levels over a wide rang of electron density values (10 18 to 10 20 ) at various electron plasma temperature. For those transitions with positive population inversion factor, the gain coefficients are evaluated and plotted against the electron density.