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 shifts caused by the hard sphere confinement as a percentage of total energy level shifts of 1s2s and 1s2p atomic states for the He-like Ar ion in dense plasmas. E_sh is the energy level shift caused by the hard sphere confinement and E_st is the total energy level shift caused by the hard sphere confinement and free electron screening.