Calculation of Atomic Data and Gain Coefficient for XUV & Soft X-Ray Laser Emission from Ge XXIII

Wessameldin S. Abdelaziz^*

National Institute of Laser Enhanced Sciences, Cairo University, Giza, Egypt.

DOI: 10.4236/opj.2014.49025                

Abstract

Energy levels, transition probabilities, oscillator strengths, and collision strengths have been calculated for transitions in Ne-like Ge. The data refer to a 241 fine-structure levels belonging to the configurations 1s² 2s² 2p⁵nl, 1s² 2s¹ 2p⁶nl (n = 3, 4, 5, 6; l = s, p, d, f, g and h), which have been calculated by the fully relativistic flexible atomic code (FAC). These data are used in the determination of the reduced population for the 241 fine structure levels and gain coefficients over a wide range of electron densities (from 2 × 10⁺²⁰ to 4 × 10⁺²² cm^-3) and at various electron plasma temperatures (650, 850, 1050, 1250, 1450, 1650, 1850) eV by using the MATLAB R2013a Computer program for solving simultaneous coupled rate equations. The reduced population for the 241 fine structure levels the gain coefficients for those transitions with positive population inversion factor are determined and plotted against the electron density.

Keywords

Energy Levels, Transition Probabilities, Oscillator Strengths, Collision Strengths

Conflicts of Interest

The authors declare no conflicts of interest.

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