Hyperfine structure in 167 Er I+II+III: multiconfiguration Dirac-Fock interpretation of measurements
1987; IOP Publishing; Volume: 20; Issue: 8 Linguagem: Inglês
10.1088/0022-3700/20/8/008
ISSN1747-3721
AutoresU. Nielsen, L. Andersen, O. Poulsen, Erling Riis,
Tópico(s)Rare-earth and actinide compounds
ResumoThe authors report the first high-resolution measurement of hyperfine structure (HFS) in the 4f12 configuration of 167Er III. Together with recent measurements of HFS in the 4f126s2 configuration of 167Er I and in the 4f126s configuration of 167Er II, these data constitute the first detailed description of HFS along several ionisation stages in a rare-earth element. Based on ab initio, multiconfiguration Dirac-Fock calculations of the magnetic dipole and electric quadrupole coupling constants for experimentally observed levels, several conclusions are drawn in a discussion of the present status of understanding of HFS in typical rare-earth system.
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