Precision spectroscopy of the $3s-3p$ 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, Th. Udem

Publikation: Beitrag in einer FachzeitschriftArtikelBegutachtung


We apply a recently demonstrated method for precision spectroscopy on strong transitions in trapped ions to measure both fine-structure components of the 3s−3p transition in 24Mg+ and 26Mg+. 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.
Seiten (von - bis)022503
FachzeitschriftPhysical Review B
PublikationsstatusVeröffentlicht - 1 Aug. 2009
Extern publiziertJa

Fields of Expertise

  • Advanced Materials Science

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