Hyperfine structure of high-L states in i143,145 by atomic-beam laser-rf double resonance

W. J. Childs
Phys. Rev. A 44, 760 – Published 1 July 1991
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Abstract

The atomic-beam laser-rf double-resonance technique has been used to study the hyperfine structure (hfs) of the metastable 7L511 and 7K4 states of the 4f45d6s configuration in i143,145. Four zero-field intervals were measured in each state and the results used to assign the conventional hfs constants A and B. Comparison of the results with predictions of the Sandars-Beck model allowed evaluation of the relevant single-electron radial hfs integrals. These are compared with earlier results from the Nd i atomic ground term and with extrapolations from other rare-earth elements. The unusually large orbital-angular-momentum values (L=7 and 8 for the states studied) do not appear to have introduced any anomalous effects. Ab initio calculations are not yet feasible for the complex 4f45d6s levels studied.

  • Received 14 January 1991

DOI:https://doi.org/10.1103/PhysRevA.44.760

©1991 American Physical Society

Authors & Affiliations

W. J. Childs

  • Argonne National Laboratory, Argonne, Illinois 60439

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Vol. 44, Iss. 1 — July 1991

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