Ground-State g Factor of Highly Charged Th229 Ions: An Access to the M1 Transition Probability between the Isomeric and Ground Nuclear States

V. M. Shabaev, D. A. Glazov, A. M. Ryzhkov, C. Brandau, G. Plunien, W. Quint, A. M. Volchkova, and D. V. Zinenko
Phys. Rev. Lett. 128, 043001 – Published 24 January 2022
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Abstract

A method is proposed to determine the M1 nuclear transition amplitude and hence the lifetime of the “nuclear clock transition” between the low-lying (8eV) first isomeric state and the ground state of Th229 from a measurement of the ground-state g factor of few-electron Th229 ions. As a tool, the effect of nuclear hyperfine mixing in highly charged Th229 ions such as Th22989+ or Th22987+ is used. The ground-state-only g-factor measurement would also provide first experimental evidence of nuclear hyperfine mixing in atomic ions. Combining the measurements for H-, Li-, and B-like Th229 ions has a potential to improve the initial result for a single charge state and to determine the nuclear magnetic moment to a higher accuracy than that of the currently accepted value. The calculations include relativistic, interelectronic-interaction, QED, and nuclear effects.

  • Figure
  • Received 3 September 2021
  • Accepted 21 December 2021

DOI:https://doi.org/10.1103/PhysRevLett.128.043001

© 2022 American Physical Society

Physics Subject Headings (PhySH)

Atomic, Molecular & OpticalInterdisciplinary Physics

Authors & Affiliations

V. M. Shabaev1, D. A. Glazov1, A. M. Ryzhkov1, C. Brandau2,3, G. Plunien4, W. Quint3, A. M. Volchkova1, and D. V. Zinenko1

  • 1Department of Physics, St. Petersburg State University, Universitetskaya 7/9, 199034 St. Petersburg, Russia
  • 2I. Physikalisches Institut, Justus-Liebig-Universität, Heinrich-Buff-Ring 16, D-35392 Giessen, Germany
  • 3GSI Helmholtzzentrum für Schwerionenforschung GmbH, Planckstrasse 1, D-64291 Darmstadt, Germany
  • 4Institut für Theoretische Physik, TU Dresden, Mommsenstrasse 13, Dresden, D-01062, Germany

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Issue

Vol. 128, Iss. 4 — 28 January 2022

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