Precision spectroscopy of the 3s3p fine-structure doublet in Mg+

V. Batteiger, S. Knünz, M. Herrmann, G. Saathoff, H. A. Schüssler, B. Bernhardt, T. Wilken, R. Holzwarth, T. W. Hänsch, and Th. Udem
Phys. Rev. A 80, 022503 – Published 11 August 2009

Abstract

We apply a recently demonstrated method for precision spectroscopy on strong transitions in trapped ions to measure both fine-structure components of the 3s3p transition in M24g+ and M26g+. We deduce absolute frequency reference data for transition frequencies, isotope shifts, and fine-structure splittings that in particular are useful for comparison with quasar absorption spectra, which test possible space-time variations of the fine-structure constant. The measurement accuracy improves previous literature values, when existing, by more than two orders of magnitude.

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  • Received 26 June 2009

DOI:https://doi.org/10.1103/PhysRevA.80.022503

©2009 American Physical Society

Authors & Affiliations

V. Batteiger1, S. Knünz1, M. Herrmann1, G. Saathoff1, H. A. Schüssler2, B. Bernhardt1, T. Wilken1, R. Holzwarth1, T. W. Hänsch1,3, and Th. Udem1

  • 1Max-Planck-Institut für Quantenoptik, 85748 Garching, Germany
  • 2Department of Physics, Texas A&M University, College Station, Texas 77843, USA
  • 3Department of Physics, Ludwig-Maximilians-Universität München, 80539 München, Germany

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Vol. 80, Iss. 2 — August 2009

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