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Influence of plasma effect on the energy levels and transition probabilities of hydrogen-like ions

Wang Jian-Guo Li Bo-Wen Jiang Jun Dong Chen-Zhong Ding Xiao-Bin

Influence of plasma effect on the energy levels and transition probabilities of hydrogen-like ions

Wang Jian-Guo, Li Bo-Wen, Jiang Jun, Dong Chen-Zhong, Ding Xiao-Bin
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Publishing process
  • Received Date:  30 September 2008
  • Accepted Date:  11 March 2009
  • Published Online:  05 April 2009

Influence of plasma effect on the energy levels and transition probabilities of hydrogen-like ions

  • 1. (1)北京应用物理与计算数学研究所,北京 100088; (2)西北师范大学物理与电子工程学院,兰州 730070

Abstract: The effect of plasma screening has been investigated by incorporating the Debye potential into the framework of the relativistic Dirac-Fock method, and the GRASP92 code has been modified to perform the calculations. As an example, we have studied the plasma effecting on energy levels and transition probabilities of H-like ions embedded in dense and hot plasma. The following three important results have been obtained: (1) all energy levels are shifted away from their unscreened values toward the continuum, and the shift of energy increases as screening strength decreasing. Furthermore, for each eigenstate with given quantum numbers n and l, there is a finite value of λc (critical length) which corresponds a zero energy. (2) For a given transition, the oscillator strength and transition probability decrease with increase of the screening strength. (3) The degenerate fine-structure levels with the same n, j but different l can be destroyed by the plasma screening effect, even without the consideration of the Lamb shift, which has received little attention in the past.

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