Isotope dependence of the Zeeman effect in lithium-like calcium

Köhler, Florian; Blaum, Klaus; Block, Michael; Chenmarev, S.; Eliseev, Sergey; Glazov, Dmitry A.; Goncharov, Mikhail; Hou , Jiamin; Kracke, Anke; Nesterenko, Dmitri A.; Novikov, Yuri N.; Quint, Wolfgang; Minaya Ramirez, Enrique; Shabaev, Vladimir M.; Sturm, Sven; Volotka, Andrey V.; Werth, Guüter

doi:10.1038/ncomms10246

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Isotope dependence of the Zeeman effect in lithium-like calcium

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Blaum, Klaus
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

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Chenmarev, S.
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;
Department of Physics, St Petersburg State University;

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Eliseev, Sergey
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

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Goncharov, Mikhail
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

Hou , Jiamin
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

Kracke, Anke
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

Novikov, Yuri N.
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;
Department of Physics, St Petersburg State University;
Petersburg Nuclear Physics Institute, Gatchina;

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Minaya Ramirez, Enrique
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

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Sturm, Sven
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

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http://www.nature.com/ncomms/2016/160118/ncomms10246/pdf/ncomms10246.pdf
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Citation

Köhler, F., Blaum, K., Block, M., Chenmarev, S., Eliseev, S., Glazov, D. A., et al. (2016). Isotope dependence of the Zeeman effect in lithium-like calcium. Nature Communications, 7: 10246. doi:10.1038/ncomms10246.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0029-7DE4-0

Abstract

The magnetic moment μ of a bound electron, generally expressed by the g-factor μ=−g μ_B s ħ⁻¹ with μ_B the Bohr magneton and s the electron’s spin, can be calculated by bound-state quantum electrodynamics (BS-QED) to very high precision. The recent ultra-precise experiment on hydrogen-like silicon determined this value to eleven significant digits, and thus allowed to rigorously probe the validity of BS-QED. Yet, the investigation of one of the most interesting contribution to the g-factor, the relativistic interaction between electron and nucleus, is limited by our knowledge of BS-QED effects. By comparing the g-factors of two isotopes, it is possible to cancel most of these contributions and sensitively probe nuclear effects. Here, we present calculations and experiments on the isotope dependence of the Zeeman effect in lithium-like calcium ions. The good agreement between the theoretical predicted recoil contribution and the high-precision g-factor measurements paves the way for a new generation of BS-QED tests.