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 Δ n = 0 increase, and for Δ n ≠ 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.

本文研究了致密等离子体中类锂离子 ( Z = 7-11)的能级、跃迁能、跃迁概率、加权振荡器强度和线强度。相对论效应和电子相关效应由 MCDHF 方法描述。离子球模型被应用于包括密集等离子体屏蔽效应。考虑接地配置 1s ² 2s 和激发 1s ² 2p, 1s ² 3 l ( l = 0–2)。配置集被扩大到n = 7，其中计算的能级已经收敛。^{估计了 1s 2} 3d 态的临界自由电子密度。1s除外² 3s–1s ² 3p 跃迁，Δn = 0 的跃迁能增加，而Δn ≠ 0 的跃迁能随着自由电子密度的增加而降低。对于 1s ² 3s–1s ² 3p 跃迁，光谱在较低自由电子密度下呈现蓝移，在较高自由电子密度下呈现红移，并且在较高自由电子密度下观察到能级交叉现象。