Isotope shift of the electric-dipole transition in Os

A. Kellerbauer, C. Canali, A. Fischer, U. Warring, and S. Fritzsche
Phys. Rev. A 84, 062510 – Published 21 December 2011

Abstract

The isotope shift of the bound-bound electric dipole transition at 1162.75 nm in the osmium anion was measured by high-precision collinear laser spectroscopy. The transition was observed in all naturally occurring isotopes, including 184Os with a natural abundance of 0.02%. We combined the data with our prior measurements of the hyperfine structure in 187Os and 189Os and used them to determine experimental values for the isotope shift coefficients. The normal mass shift, specific mass shift, and field shift coefficients were found to be MNMS=141.4 GHz u, MSMS=2.4(12.6) THz u, and F=16.2(9.9) GHz fm2, respectively. Theoretical values for the MSMS and F parameters were calculated based on a series of relativistic configuration interaction computations and a Fermi-like charge distribution and found to be in good agreement with the experimental values.

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  • Received 8 September 2011

DOI:https://doi.org/10.1103/PhysRevA.84.062510

©2011 American Physical Society

Authors & Affiliations

A. Kellerbauer*, C. Canali, A. Fischer, and U. Warring

  • Max Planck Institute for Nuclear Physics, Saupfercheckweg 1, D-69117 Heidelberg, Germany

S. Fritzsche

  • GSI Helmholtzzentrum für Schwerionenforschung, Planckstr. 1, D-64291 Darmstadt and FIAS Frankfurt Institute for Advanced Studies, Ruth-Moufang-Str. 1, D-60438 Frankfurt/Main, Germany

  • *a.kellerbauer@mpi-hd.mpg.de

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Vol. 84, Iss. 6 — December 2011

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