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U. Feldman, J. F. Seely and A. K. Bhatia, “Density Sensitive x-Ray Line Ratios in the BE i, B i, and Ne i Isoelectronic Sequences,” Journal of Applied Physics, Vol. 58, No. 11, 1984, pp. 3954-3958.
http://dx.doi.org/10.1063/1.335569

has been cited by the following article:

• TITLE: Gain Coefficient Calculation for Short Wave Laser Emission from Sodium like Co

  AUTHORS: Wessameldin S. Abdelaziz, Mai E. Ahmed, Mohamed Atta Khedr, Tharwat M. El-Sherbini

  KEYWORDS: Level Structure; Oscillator Strengths; Transition Probabilities and Radiative Life Times; Sodium like Co16+

  JOURNAL NAME: Optics and Photonics Journal, Vol.3 No.8, December 31, 2013

  ABSTRACT: Level structure, oscillator strengths, transition probabilities and radiative life times are evaluated for 1s2 2s2 2p63l, 4l, 5l (l = 0, 1, 2, 3, 4) states in sodium like Co16+. The calculations are carried out using COWAN code. The calculations made were compared with other results in literature where a good agreement is found. We also report on some unpublished energy values and oscillator strengths. Our results are used in the calculation of reduced population of 21 fine structure levels over a wide rang of electron density values (1018 to 1020) at various electron plasma temperature. For those transitions with positive population inversion factor, the gain coefficients are evaluated and plotted against the electron density.