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Chin. Phys. B, 2021, Vol. 30(1): 013101    DOI: 10.1088/1674-1056/abc7a3
Special Issue: SPECIAL TOPIC — Ultracold atom and its application in precision measurement
SPECIAL TOPIC—Ultracold atom and its application in precision measurement Prev   Next  

Theoretical study of the hyperfine interaction constants, Landé g-factors, and electric quadrupole moments for the low-lying states of the 61Niq+ ( q=11, 12, 14 , and 15) ions

Ting-Xian Zhang(张婷贤)1,2, Yong-Hui Zhang(张永慧)1, Cheng-Bin Li(李承斌)1,†, and Ting-Yun Shi(史庭云)1
1 State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan 430071, China; 2 University of Chinese Academy of Sciences, Beijing 100049, China
Abstract  Highly charged nickel ions have been suggested as candidates for the ultra-precise optical clock, meanwhile the relevant experiment has been carried out. In the framework of the multiconfiguration Dirac-Hartree-Fock (MCDHF) method, we calculated the hyperfine interaction constants, the Landé g-factors, and the electric quadrupole moments for the low-lying states in the 61Ni11+, 61Ni12+, 61Ni14+, and 61Ni15+ ions. These states are clock states of the selected clock transitions in highly charged nickel ions (see Fig. \fref1 1). Based on discussing the effects of the electron correlations, the Breit interaction, and quantum electrodynamics (QED) effect on these physical quantities, reasonable uncertainties were obtained for our calculated results. In addition, the electric quadrupole frequency shifts and the Zeeman frequency shifts of the clock transitions concerned were analyzed.
Keywords:  hyperfine interaction      Landé      g-factors      electric quadrupole moment      multiconfiguration Dirac-Hartree-Fock (MCDHF) method  
Received:  09 September 2020      Revised:  20 October 2020      Accepted manuscript online:  05 November 2020
PACS: (Electron correlation calculations for atoms and ions: ground state)  
  31.15.vj (Electron correlation calculations for atoms and ions: excited states)  
  31.15.aj (Relativistic corrections, spin-orbit effects, fine structure; hyperfine structure)  
  32.60.+i (Zeeman and Stark effects)  
Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 11704398 and 11934014), the National Key Research and Development Program of China (Grant No. 2017YFA0304402), and the Strategic Priority Research Program of the Chinese Academy of Sciences (Grant No. XDB21030300).
Corresponding Authors:  Corresponding author. E-mail:   

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Ting-Xian Zhang(张婷贤), Yong-Hui Zhang(张永慧), Cheng-Bin Li(李承斌), and Ting-Yun Shi(史庭云) Theoretical study of the hyperfine interaction constants, Landé g-factors, and electric quadrupole moments for the low-lying states of the 61Niq+ ( q=11, 12, 14 , and 15) ions 2021 Chin. Phys. B 30 013101

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