TITLE:
Calculation of Atomic Data and Gain Coefficient for XUV & Soft X-Ray Laser Emission from Ge XXIII
AUTHORS:
Wessameldin S. Abdelaziz
KEYWORDS:
Energy Levels, Transition Probabilities, Oscillator Strengths, Collision Strengths
JOURNAL NAME:
Optics and Photonics Journal,
Vol.4 No.9,
September
25,
2014
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.