期刊
PHYSICAL REVIEW LETTERS
卷 120, 期 9, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.120.093001
关键词
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资金
- RFBR [16-32-60013 mol_a_dk]
- Russian Federation [MK-2230.2018.2]
- SPSU [11.38.237.2015, 11.40.538.2017]
- SPSU-DFG [11.65.41.2017, STO 346/5-1]
- Federal Ministry of Education and Research of Germany [05P15RDFAA]
- Helmholtz International Center for FAIR (HIC for FAIR)
A recent measurement of the hyperfine splitting in the ground state of Li-like Bi-208(80+) has established a hyperfine puzzle- the experimental result exhibits a 7 sigma deviation from the theoretical prediction [J. Ullmann et al., Nat. Commun. 8, 15484 (2017); J. P. Karr, Nat. Phys. 13, 533 (2017)]. We provide evidence that the discrepancy is caused by an inaccurate value of the tabulated nuclear magnetic moment (mu(I)) of Bi-209. We perform relativistic density functional theory and relativistic coupled cluster calculations of the shielding constant that should be used to extract the value of mu(l) (Bi-209) and combine it with nuclear magnetic resonance measurements of BioNO(NO3)(3) in nitric acid solutions and of the hexafluoridobismuthate (V) BiF6- ion in acetonitrile. The result clearly reveals that mu(l) (Bi-209) is much smaller than the tabulated value used previously. Applying the new magnetic moment shifts the theoretical prediction into agreement with experiment and resolves the hyperfine puzzle.
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