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Chin. Phys. B, 2021, Vol. 30(5): 053102    DOI: 10.1088/1674-1056/abea80

Transition parameters of Li-like ions (Z=7-11) in dense plasmas

Xiang-Fu Li(李向富)1,†, Li-Ping Jia(贾利平)1, Hong-Bin Wang(王宏斌)2, and Gang Jiang(蒋刚)3
1 College of Electrical Engineering, Longdong University, Qingyang 745000, China;
2 College of Science, Xi'an University of Posts&Telecommunications, Xi'an 710121, China;
3 Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, China
Abstract  The energy levels, transition energies, transition probabilities, weighted oscillator strengths, and line strengths of Li-like ions ($Z=7$-11) in dense plasmas are investigated in this work. The relativistic effects and electron correlation effects are described by the MCDHF method. The ion sphere model is applied to include the dense plasma screening effect. The ground configuration $\text{1s}^2\text{2s}$ and the excited $\text{1s}^2\text{2p}$, $\text{1s}^2{3}l$ ($l=0$-2) are considered. The configuration sets are enlarged until $n=7$ where the calculated energy levels have converged. The critical free electron densities of $\text{1s}^2\text{3d}$ states are estimated. Except for $\text{1s}^2\text{3s}$-$\text{1s}^2\text{3p}$ transitions, the transition energies for $\Delta n = 0$ increase, and for $\Delta n \neq 0$ decrease with increasing free electron densities. For $\text{1s}^2\text{3s}$-$\text{1s}^2\text{3p}$ transitions, the spectra show blue-shift at lower free electron densities and red-shift at higher free electron densities, and the energy level crossing phenomens are observed at higher free electron densities.
Keywords:  Li-like ions      energy levels      transition energies      transition probabilities  
Received:  13 October 2020      Revised:  07 February 2021      Accepted manuscript online:  01 March 2021
PACS: (High-precision calculations for few-electron (or few-body) atomic systems) (Excitation energies and lifetimes; oscillator strengths)  
  31.15.xr (Self-consistent-field methods)  
  52.27.Gr (Strongly-coupled plasmas)  
Fund: Project supported by the National Natural Science Foundation of China (Grant No. 11847163), the Natural Science Foundation of Gansu Province (Grant No. 20JR10RA131), the Doctoral Science Foundation of Longdong University (Grant No. XYBY202005), the Natural Science Foundation of Shaanxi Province (Grant No. 2021JQ-698), and the Special Project of Department of Education of Shaanxi Province (Grant No. 18JK0710).
Corresponding Authors:  Xiang-Fu Li     E-mail:

Cite this article: 

Xiang-Fu Li(李向富), Li-Ping Jia(贾利平), Hong-Bin Wang(王宏斌), and Gang Jiang(蒋刚) Transition parameters of Li-like ions (Z=7-11) in dense plasmas 2021 Chin. Phys. B 30 053102

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