Abstract
The hyperfine structure (hfs) of the metastable atomic states 3d64s6 D 1/2, 3/2, 5/2, 7/2, 9/2 of55Mn was measured using theABMR- LIRF method (atomicbeammagneticresonance, detected bylaserinducedresonancefluorescence). The hfs constantsA andB, corrected for second order hfs perturbations, could be derived from these measurements. The theoretical interpretation of these correctedA- andB-factors was performed in the intermediate coupling scheme taking into account the configurations 3d 54s 2, 3d 64s and 3d 7. Examining the influence of the composition of the eigenvectors on the hfs parameters\(\left\langle {r^{ - 3} } \right\rangle ^{k_s k_l } \) it was found, that for the configuration 3d 64s the two-body magnetic interaction should be considered in the calculation of the eigenvectors. Investigating second order electrostatic configuration interactions and relativistic effects and using calculated relativistic correction factors we obtained for the nuclear quadrupole moment of the nucleus55Mn a value ofQ=0.33(1) barn, which is not perturbed by a shielding or antishielding Sternheimer factor. The following hfs constants have been obtained:
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On leave from Institute of Physics, Technical University of Posnań
Thanks are due to the Deutsche Forschungsgemeinschaft for financial support. The numerical calculations were performed with the computer system IBM/370-168 of the Regionales Hochschulrechenzentrum der Universität Bonn
Thanks are due to Dr. S. Büttgenbach, Dr. R. Dicke and R. Kuhnen for many discussions and for helping us to perform the on line computer experiments. One of the authors (J.D.) wishes to thank the Alexander von Humboldt-Foundation of the Federal Republic of Germany for a fellowship.
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Dembczyński, J., Ertmer, W., Johann, U. et al. Laser-Rf double-resonance studies of the hyperfine structure of metastable atomic states of55Mn. Z Physik A 291, 207–218 (1979). https://doi.org/10.1007/BF01409186
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DOI: https://doi.org/10.1007/BF01409186