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The electron mass from g-factor measurements on hydrogen-like carbon 12C5+

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Köhler,  Florian
GSI Helmholtzzentrum für Schwerionenforschung GmbH;
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;

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

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

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Citation

Köhler, F., Sturm, S., Kracke, A., Werth, G., Quint, W., & Blaum, K. (2015). The electron mass from g-factor measurements on hydrogen-like carbon 12C5+. Journal of Physics B, 48(14): 144032. doi:10.1088/0953-4075/48/14/144032.


Cite as: https://hdl.handle.net/11858/00-001M-0000-0027-A2D1-6
Abstract
The electron mass in atomic mass units has been determined with a relative uncertainty of 2.8 x 10-11 (Sturm et al 2014 Nature 506 467–70), which represents a 13-fold improvement of the 2010 CODATA value (Mohr et al 2012 Rev. Mod. Phys. 84 1527–605). The underlying measurement principle combines a high-precision measurement of the Larmor-to-cyclotron frequency ratio on a single hydrogen-like carbon ion in a Penning trap with a corresponding very accurate g-factor calculation. Here, we present the measurement results in detail, including a comprehensive discussion of the systematic shifts and their uncertainties. A special focus is set on the various sources of phase jitters, which are essential for the understanding of the applied line-shape model for the g-factor resonance.