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HK: Fachverband Physik der Hadronen und Kerne
HK 37: Structure and Dynamics of Nuclei VII
HK 37.6: Talk
Wednesday, April 1, 2020, 18:00–18:15, J-HS E
How well do we know nuclear magnetic moments: The cases of 207Pb and 209Bi — •Wilfried Nörtershäuser1, Verena Fella1, Leonid V. Skripnikov2, Magnus R. Buchner3, H. Lars Deubner3, Florian Kraus3, Alexei F. Privalov1, Vladimir M. Shabaev2, and Michael Vogel1 — 1TU Darmstadt — 2St. Petersburg State University — 3Philipps-Universität Marburg
Tabulated nuclear magnetic moments of stable isotopes are often used as reference values, e.g., in studies of short-lived isotopes. Results from nuclear magnetic resonance measurements are often provided with very high accuracy but are affected with chemical and diamagnetic shifts which are not always well under control. We will report on two extreme cases recently investigated. Motivated by discrepancies between QED calculations and laser spectroscopic investigations on highly charged ions [1], we performed new NMR studies on 207Pb and 209Bi [2] where we found significant discrepancies to the tabulated values [3].
[1] J.
Ullmann et al., Nature Comm. 8 15484 (2017).
[2] L. Skripnikov et al., Phys. Rev. Lett. 120, 093001 (2018).
[3] N. Stone, Atomic Data Nuclear Data Tables 90, 75 (2005).
This work was supported by BMBF under contract 05P19RDFAA.