Abstract
Using the atomic beam magnetic resonance method, the five hyperfine structure separations in the 4f 3 6s 2 4I9/2 ground state of 14159 Pr have been measured. The results are:F F′ E *FF′ /h (MHz) 7 6 6477.913423(17) 6 5 5556.359848 (6) 5 4 4633.023306 (2) 4 3 3708.201146 (5) 3 2 2782.190601(15)
From these quantities, the multipole interaction constantsA k,k=1, 2, 3, 4 between the nucleus and the electron shell have been calculated.A 4 especially then served to give the following limit for the intrinsic hexadecapole moment: ¦Q 40¦<0.4eb 2. Furthermore, theg J -factors of the4 I multiplet have been measured at magnetic fields of 300 Oe. The results are:g J(4 I 9/2)=0.7310371(15)g J(4 I 11/2)=0.9651476(20)g J(4 I 13/2)=1.1063197(40)g J(4 I 15/2)=1.197963 (30)
Small corrections due to perturbations by neighbouring fine structure levels are included.
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Thanks are due to the Deutsche Forschungsgemeinschaft and the Bundesministerium für Forschung und Technologie for financial support as well as to the Gesellschaft für Mathematik und Datenverarbeitung m.b.H., Birlinghoven, for providing the computational facilities.
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Böklen, K.D., Bossert, T., Foerster, W. et al. Hyperfine structure measurements in the4 I 9/2 ground state of141Pr. Z Physik A 274, 195–201 (1975). https://doi.org/10.1007/BF01437730
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DOI: https://doi.org/10.1007/BF01437730