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Hyperfine structure investigations in the4F9/2 atomic ground state of191Ir and193Ir

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Zeitschrift für Physik A Hadrons and nuclei

Abstract

The5d 76s2 4F9/2 atomic ground state of191Ir and193Ir has been studied using the atomic-beam magnetic-resonance method. The results are:193Ir:g J(4F9/2)=1.29694 (3)191Ir:Δv(4F9/2; F=6↔F=5)=659.26496 (12) MHzΔv( 4F9/2; F=5↔F=4)=189.44002 (09) MHzΔv( 4F9/2; F=3↔F=4)=84.05040 (80) MHzA=57.52148 (04) MHzB=471.20425 (57) MHzC=−0.020 (30) kHz193Ir:Δv( 4F9/2; F=6↔F=5)=660.09043 (12) MHzΔv( 4F9/2; F=5↔F=4)=224.47848 (13) MHzΔv( 4F9/2; F=↔F=4)=33.53453 (89) MHzA=62.65556 (05) MHzB=426.23546 (64) MHzC=0.020 (30) kHz Using the magnetic dipole moments known by NMR-technique [1] we obtained for the electric quadrupole moments as calculated from the hyperfine interaction constantsA andB:Q(191Ir)=0.78 (20) barns,Q(193Ir)=0.70 (18) barns (uncorrected for core polarization effects). A calculation of the hyperfine anomaly yields:191 Δ 193=−0.00023 (10). The ratio of theB factors which should be the same as for the quadrupole moments turned out to be:B(191Ir)/B(193Ir)=Q(191Ir)/Q(193Ir)=1.105502(3).

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Authors and Affiliations

  1. Institut für Angewandte Physik der Universität Bonn, Deutschland

    S. Büttgenbach, M. Herschel, G. Meisel, E. Schrödl, W. Witte &  W. J. Childs

  2. Argonne National Laboratory, Argonne, Illinois, USA

    W. J. Childs

Authors
  1. S. Büttgenbach
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  2. M. Herschel
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  3. G. Meisel
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  4. E. Schrödl
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  5. W. Witte
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  6. W. J. Childs
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Additional information

Thanks are due to the Deutsche Forschungsgemeinschaft and the Bundesministerium für Bildung und Wissenschaft for financial support. The numerical calculations were performed with the computer IBM 370/165 of the Gesellschaft für Mathematik und Datenverarbeitung m.b.H. Bonn.

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Büttgenbach, S., Herschel, M., Meisel, G. et al. Hyperfine structure investigations in the4F9/2 atomic ground state of191Ir and193Ir. Z. Physik 263, 341–346 (1973). https://doi.org/10.1007/BF01391592

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  • DOI: https://doi.org/10.1007/BF01391592

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