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

• 作者: Xiang-Fu Li Li-Ping Jia Hong-Bin Wang Gang Jiang
• 来源期刊: 中国物理B（英文版）
• 年，卷（期）: 2021,（5）
• 所属期刊栏目: ATOMIC AND MOLECULAR PHYSICS
• 页码范围: 369-379
• 页数: 11页
• 语种: 英文
• DOI: 10.1088/1674-1056/abea80

摘要

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 1s22s and the excited 1s22p,1s23l (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 1s23d states are estimated.Except for 1s23s-1s23p transitions,the transition energies for Δn =0 increase,and for Δn ≠ 0 decrease with increasing free electron densities.For 1s23s-1s23p 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.