Abstract
The hyperfine interaction constantsA andB of six low-lying metastable fine structure states of the two iridium isotopes191Ir and193Ir and the electronicg-factors of these levels have been measured using the atomic-beam magnetic-resonance method. From the values of the magnetic-dipole interaction constantsA, corrected for off-diagonal perturbations, we extracted the hyperfine anomaly of a pure 6s-electron state:191 Δ 193 s =0.64(7)%. Using nonrelativistic approximations for the effective radial parameters the nuclear electric-quadrupole moments were obtained:Q(191Ir) = 0.81(21)b,Q(193Ir)=0.73(19)b
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Thanks are due to the Deutsche Forschungsgemeinschaft for financial support. For the numerical calculations the computer system IBM 370/168 of the Regionales Hochschulrechenzentrum der Universität Bonn was used.
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Büttgenbach, S., Dicke, R., Gebauer, H. et al. Hyperfine structure of six low-lying fine structure levels of191Ir and193Ir and the191Δ 193s hyperfine anomaly. Z Physik A 286, 333–340 (1978). https://doi.org/10.1007/BF01408893
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DOI: https://doi.org/10.1007/BF01408893