Hyperfine structure of metastable levels in 151,153Eu+ by collinear laser-rf double-resonance spectroscopy

A. Sen and W. J. Childs
Phys. Rev. A 36, 1983 – Published 1 September 1987
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Abstract

The laser-rf double-resonance technique has been used to make high-precision measurements of the hyperfine structure of the 4f7(8S0)5d 9D2,3,4,50 metastable levels in 151,153Eu+. A new apparatus which uses a collinear laser and a slow ion beam (∼1.35 keV) enables us to achieve a long transit time in the rf region. Consequently, narrow linewidths of 60 kHz have been observed for the first time in such systems. The magnetic dipole and electric quadrupole hyperfine constants (A and B, respectively) of these metastable levels have been determined with a higher precision (23 orders of magnitude) than before. A J-dependent magnetic hyperfine anomaly has been observed in the DJ09 states. In addition, more accurate values of nuclear quadrupole moments of the two isotopes 151,153Eu+ have been determined.

  • Received 6 April 1987

DOI:https://doi.org/10.1103/PhysRevA.36.1983

©1987 American Physical Society

Authors & Affiliations

A. Sen and W. J. Childs

  • Argonne National Laboratory, Argonne, Illinois 60439-4843

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Vol. 36, Iss. 5 — September 1987

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