New Nuclear Magnetic Moment of $^{209}$Bi - Resolving the Bismuth Hyperfine Puzzle
Abstract
A recent measurement of the hyperfine splitting in the ground state of Li-like Bi has established a "hyperfine puzzle" -- the experimental result exhibits a 7 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 () of Bi. We perform relativistic density functional theory and relativistic coupled cluster calculations of the shielding constant that should be used to extract the value of and combine it with nuclear magnetic resonance measurements of Bi(NO) in nitric acid solutions and of the hexafluoridobismuthate(V) BiF ion in acetonitrile. The result clearly reveals that 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.
Keywords
Cite
@article{arxiv.1803.02584,
title = {New Nuclear Magnetic Moment of $^{209}$Bi - Resolving the Bismuth Hyperfine Puzzle},
author = {Leonid V. Skripnikov and Stefan Schmidt and Johannes Ullmann and Christopher Geppert and Florian Kraus and Benjamin Kresse and Wilfried Nörtershäuser and Alexei F. Privalov and Benjamin Scheibe and Vladimir M. Shabaev and Michael Vogel and Andrey V. Volotka},
journal= {arXiv preprint arXiv:1803.02584},
year = {2018}
}