New Nuclear Magnetic Moment of ^{209}Bi: Resolving the Bismuth Hyperfine Puzzle.
New Nuclear Magnetic Moment of ^{209}Bi: Resolving the Bismuth Hyperfine Puzzle.
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^{209}Bi 的新核磁矩：解决铋超精细难题。
DOI：
10.1103/physrevlett.120.093001
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发表时间：
2018
影响因子：
8.6
通讯作者：
A. Volotka
中科院分区：
文献类型：
--
作者：
L. Skripnikov;S. Schmidt;J. Ullmann;C. Geppert;F. Kraus;B. Kresse;W. Nörtershäuser;A. Privalov;B. Scheibe;V. Shabaev;M. Vogel;A. Volotka
最近对li -类锂^{208}Bi^{80+}基态超精细分裂的测量建立了一个“超精细难题”——实验结果与理论预测有7σ偏差[J]。Ullmann et al., Nat comm . 8, 15484 (2017)NCAOBW2041-172310.1038/ncomms15484；j . P。刘志强，刘志强，刘志强，等。中国生物医学工程学报，2016,33(4):387 - 387。我们提供的证据表明，这种差异是由^{209}Bi的表列核磁矩（μ_{I}）的不准确值引起的。利用相对论密度泛函理论和相对论耦合簇计算了用于提取μ_{I}（^{209}Bi）值的屏蔽常数，并将其与硝酸溶液中Bi(NO_{3})_{3}和乙腈中六氟铋酸盐(V) BiF_{6}^{-}离子的核磁共振测量相结合。结果清楚地表明μ_{I}（^{209}Bi）比以前所用的表格值小得多。新磁矩的应用使理论预测与实验一致，解决了超精细难题。
A recent measurement of the hyperfine splitting in the ground state of Li-like ^{208}Bi^{80+} has established a "hyperfine puzzle"-the experimental result exhibits a 7σ deviation from the theoretical prediction [J. Ullmann et al., Nat. Commun. 8, 15484 (2017)NCAOBW2041-172310.1038/ncomms15484; J. P. Karr, Nat. Phys. 13, 533 (2017)NPAHAX1745-247310.1038/nphys4159]. We provide evidence that the discrepancy is caused by an inaccurate value of the tabulated nuclear magnetic moment (μ_{I}) of ^{209}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 μ_{I}(^{209}Bi) and combine it with nuclear magnetic resonance measurements of Bi(NO_{3})_{3} in nitric acid solutions and of the hexafluoridobismuthate(V) BiF_{6}^{-} ion in acetonitrile. The result clearly reveals that μ_{I}(^{209}Bi) 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.
影响因子：
2.9
作者：
Z. Andelkovic;R. Cazan;W. Nortershauser;S. Bharadia;D. Segal;R. Thompson;R. Johren;J. Vollbrecht;V. Hannen;M. Vogel
通讯作者：
Z. Andelkovic;R. Cazan;W. Nortershauser;S. Bharadia;D. Segal;R. Thompson;R. Johren;J. Vollbrecht;V. Hannen;M. Vogel