Eur. Phys. J. D 55, 17-21 (2009)
https://doi.org/10.1140/epjd/e2009-00209-3

Soft X-ray laser emission from W ⁴⁶⁺

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

Corresponding author: ^a wessamlaser@yahoo.com

Received: 20 February 2009
Revised: 22 April 2009
Published online: 17 July 2009

Abstract

Using published atomic data, the populations of the excited states 1s² 2s² 2p⁶ 3s² 3p⁶ 3d⁹ 4l (l= s, p, d, and f) – 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ of Ni-like W have been calculated for electron densities in the range 10²⁰–10²³ cm^-3 and electron temperatures in the range 0.5–1 keV. For those transitions with positive population inversion factor, the gain coefficients are determined and plotted against the electron density.