Reduced population and gain coefficient calculations for soft X-ray laser emission from Eu期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

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Reduced population and gain coefficient calculations for soft X-ray laser emission from Eu

Authors:	Wessameldin S Abdelaziz ThM El Sherbini

Institution:	^a National Institute of Laser Enhanced Sciences, Cairo University, Giza, Egypt ^b Lasers and New Materials Laboratory, Physics Department, Faculty of Science, Cairo University, Giza, Egypt ^c The Abdus Salam International Centre for Theoretical Physics, Trieste, Italy

Abstract:	Energy levels, transition probabilities and effective collision strengths for the 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰, and the 1s² 2s² 2p⁶ 3s² 3p⁶ 3d⁹ 4l (l=s, p, d, and f) states of nickel-like Eu are used in the determination of the reduced population for 55 fine structure levels over a wide range of electron densities (from 10⁺²⁰ to 4×10⁺²² cm⁻³) and at various electron plasma temperatures.The gain coefficients for those transitions with positive population inversion factor are determined and plotted against the electron density.

Keywords:	Soft X-ray laser emission Gain coefficients Nickel-like Eu
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