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

• 作者: Wessameldin S. Abdelaziz
• 来源期刊: 光学与光子学期刊(英文)
• 学科: 物理学
• 关键词: Energy LEVELS TRANSITION Probabilities OSCILLATOR Strengths COLLISION Strengths
• 年，卷（期）: 2014,（9）
• 页码范围: 246-269
• 页数: 24页
• 分类号: O56

摘要

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.