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g-factor measurement of hydrogenlike 28Si13+ as a challenge to QED calculations

S. Sturm, A. Wagner, M. Kretzschmar, W. Quint, G. Werth, and K. Blaum
Phys. Rev. A 87, 030501(R) – Published 8 March 2013

Abstract

Using a phase-detection method to determine the cyclotron frequency of a single trapped ion in a Penning trap allowed us to perform a measurement of the g factor of the bound electron in hydrogenlike 28Si13+ with a statistical uncertainty of 4×1011. Furthermore, we reevaluated the image-charge shift as the main source of uncertainty. Our result challenges bound-state quantum-electrodynamical calculations by probing two-loop contributions of order (Zα)6 and paves the way towards a more precise determination of fundamental constants as the electron mass.

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  • Received 30 May 2012

DOI:https://doi.org/10.1103/PhysRevA.87.030501

©2013 American Physical Society

Authors & Affiliations

S. Sturm1,2, A. Wagner1, M. Kretzschmar2, W. Quint3, G. Werth2, and K. Blaum1

  • 1Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
  • 2Institut für Physik, Johannes Gutenberg-Universität, 55099 Mainz, Germany
  • 3GSI Helmholtzzentrum für Schwerionenforschung GmbH, Planckstraße 1, 64291 Darmstadt, Germany

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Vol. 87, Iss. 3 — March 2013

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