Abstract
By means of a level crossing experiment the hyperfine structure constants of thez 6 P 7/2-level of Eu have been determined. The results areA=-6.51(6) MHz andB= 131.2(1.0) MHz in the isotope151Eu andA=-2.84(3) MHz andB=327.5(1.5) MHz in the isotope153Eu. Experimental data on the hyperfine splitting are available now for 11 of the 12 levels of the configuration 4f 7 (8S)6s 6p of EuI. These data are compared with the theoretical interpretation given by Bordarieret al. [1] which was based on only 7A-factors andB-factors. It is shown that the agreement between theory and experiment can be improved by taking into account configuration interactions.
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The author is most grateful to Prof. A. Steudel, Hannover, for his interest in this work and to Dr. G. Smith, Oxford, for sending details on his eigenfunctions.
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Lange, W. Level crossing investigation of the hyperfine splitting in thez 6 P 7/2-level of EuI. Z Physik A 272, 223–226 (1975). https://doi.org/10.1007/BF01438013
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DOI: https://doi.org/10.1007/BF01438013