New Nuclear Magnetic Moment of Bi209: Resolving the Bismuth Hyperfine Puzzle

Leonid V. Skripnikov, Stefan Schmidt, Johannes Ullmann, Christopher Geppert, Florian Kraus, Benjamin Kresse, Wilfried Nörtershäuser, Alexei F. Privalov, Benjamin Scheibe, Vladimir M. Shabaev, Michael Vogel, and Andrey V. Volotka
Phys. Rev. Lett. 120, 093001 – Published 27 February 2018
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Abstract

A recent measurement of the hyperfine splitting in the ground state of Li-like Bi20880+ 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); 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 (μI) of Bi209. We perform relativistic density functional theory and relativistic coupled cluster calculations of the shielding constant that should be used to extract the value of μI(Bi209) and combine it with nuclear magnetic resonance measurements of Bi(NO3)3 in nitric acid solutions and of the hexafluoridobismuthate(V) BiF6 ion in acetonitrile. The result clearly reveals that μI(Bi209) 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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  • Received 19 November 2017

DOI:https://doi.org/10.1103/PhysRevLett.120.093001

© 2018 American Physical Society

Physics Subject Headings (PhySH)

Atomic, Molecular & OpticalNuclear PhysicsParticles & FieldsInterdisciplinary Physics

Authors & Affiliations

Leonid V. Skripnikov1,2,*, Stefan Schmidt3,4, Johannes Ullmann3,5, Christopher Geppert6, Florian Kraus7, Benjamin Kresse8, Wilfried Nörtershäuser3, Alexei F. Privalov8, Benjamin Scheibe7, Vladimir M. Shabaev1, Michael Vogel8, and Andrey V. Volotka9,1

  • 1Department of Physics, St. Petersburg State University, Universitetskaya 7/9, 199034 St. Petersburg, Russia
  • 2Petersburg Nuclear Physics Institute, B.P. Konstantinov of National Research Centre “Kurchatov Institute”, 188300 Gatchina, Leningrad District, Russia
  • 3Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany
  • 4Institut für Physik, Universität Mainz, 55128 Mainz, Germany
  • 5Institut für Kernphysik, Westfälische Wilhelms-Universität Münster, 48149 Münster, Germany
  • 6Institut für Kernchemie, Universität Mainz, 55128 Mainz, Germany
  • 7Anorganische Chemie und Fluorchemie, Philipps-Universität Marburg, 35032 Marburg, Germany
  • 8Institut für Festkörperphysik, Technische Universität Darmstadt, Hochschulstr. 6, 64289 Darmstadt, Germany
  • 9Helmholtz-Institut Jena, D-07743 Jena, Germany

  • *leonidos239@gmail.com

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Issue

Vol. 120, Iss. 9 — 2 March 2018

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