Relativistic calculations of fine-structure energy levels of He-like Ar in dense plasmas<xref rid="cpb_27_7_073101_fn1" ref-type="fn">*</xref> <fn id="cpb_27_7_073101_fn1"> <label>*</label> <p>Project supported by the National Natural Science Foundation of China (Grant No. 11474208) and the Doctoral Science Foundation of Longdong University, China (Grant No. XYBY1704).</p> </fn>

Relativistic calculations of fine-structure energy levels of He-like Ar in dense plasmas* *

Project supported by the National Natural Science Foundation of China (Grant No. 11474208) and the Doctoral Science Foundation of Longdong University, China (Grant No. XYBY1704).

Li Xiang-Fu^{1, 2}, Jiang Gang^{1, 3, †}

(color online) The energy level separation shifts of 1s2s and 1s2p atomic states for the He-like Ar ion under the hard sphere confinement. 1s2s (³S₁), 1s2s (¹S₀), 1s2p (³P₀), 1s2p (³P₁), 1s2p (³P₂), and 1s2p (¹P₁) represent the energy level separations between 1s2s (³S₁) and 1s² (¹S₀), 1s2s (¹S₀) and 1s2p (³P₁), 1s2p (³P₀) and 1s2s (³S₁), 1s2p (³P₁) and 1s2p (³P₀), 1s2p (³P₂) and 1s2s (¹S₀), and 1s2p (¹P₁) and 1s2p (³P₂) atomic states, respectively.