Ab initio MCDHF/RCI calculations of mass- and field shifts isotopes parameters of the 1s2 1S0-1s2p 1P10 and 1s2 1S0-1s 2p 3P0,1,20 transitions in He-like ions for the sequence 2 ≤ Z ≤ 83

被引:0
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作者
Ben Nasr, Sirine [1 ]
Manai, Soumaya [2 ,4 ]
Salhi, Dhia Elhak [2 ,3 ]
Jelassi, Haikel [2 ]
机构
[1] Univ Mons, Phys Atom & Astrophys, B-7000 Mons, Belgium
[2] Natl Ctr Nucl Sci & Technol, Lab Energy & Matter Nucl Sci Dev, LR16CNSTN02, Sidi Thabet Technopk, Ariana 2020, Tunisia
[3] Univ Tunis El Manar Tunis, Fac Sci Tunis, Tunis, Tunisia
[4] Univ Carthage, Fac Sci Bizerte, Carthage, Tunisia
关键词
Multiconfiguration Dirac-Hartree-Fock; Mass shift; Field shift; Isotope shift; HEAVY-ELEMENTS; ATOMS; REFORMULATION;
D O I
10.1016/j.jqsrt.2023.108890
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
Based on the multiconfiguration Dirac-Hartree-Fock method, the field shift and mass shift parameters of the 1s(2) S-1(0) - 1s 2p P-1(1)0 and 1s(2) S-1(0) - 1s 2p P-3(0,1,2)0 transitions in He-like ions for the sequence 2 <= Z <= 83 are calculated with high precision. The total value of the isotope shift is determined by the sum of the mass- and field-shifts. With the inclusion of the Breit interaction and the leading QED corrections, we find that the mass shift parameters of these transitions do not change monotonously along the isoelectronic sequence in the high-Z range due to the relativistic nuclear recoil effects. In addition, the field shifts and mass shifts of these four transitions are estimated and compared along the isoelectronic sequence.
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页数:10
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