Hyperfine structure of excited 4f/sup 11/5d6s/sup 2/ levels in /sup 167/ErI: Measurements and multiconfiguration Dirac-Fock calculations
The laser-RF double-resonance technique has been used to make precise measurements of the hyperfine structure (hfs) of 10 excited 4f/sup 11/5d6s/sup 2/ levels in /sup 167/Er. The results are compared with multiconfiguration Dirac-Fock calculations using the known nuclear moment values. For the dipole hfs, agreement with experiment is reasonably good. For the quadrupole hfs, agreement is relatively good if allowance is made for different shielding in the 4f and 5d shells. The theory is less successful where the 4f and 5d contributions tend to cancel. Sternheimer factors R/sub n/l are obtained. Precise hfs studies are also made for one highly excited 4f/sup 12/6s6p level. Less precise results are given for hfs of more highly excited levels and for isotope shifts of a number of optical lines.
- Research Organization:
- Argonne National Laboratory, Argonne, Illinois 60439
- DOE Contract Number:
- W-31-109-ENG-38
- OSTI ID:
- 5892852
- Journal Information:
- Phys. Rev. A; (United States), Vol. 33:3
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ERBIUM 167
HYPERFINE STRUCTURE
DOUBLE RESONANCE METHODS
ELECTRONIC STRUCTURE
EXCITED STATES
FLUORESCENCE
LASER RADIATION
ELECTROMAGNETIC RADIATION
ENERGY LEVELS
ERBIUM ISOTOPES
EVEN-ODD NUCLEI
INTERMEDIATE MASS NUCLEI
INTERNAL CONVERSION RADIOISOTOPES
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
LUMINESCENCE
NUCLEI
RADIATIONS
RADIOISOTOPES
RARE EARTH ISOTOPES
RARE EARTH NUCLEI
SECONDS LIVING RADIOISOTOPES
STABLE ISOTOPES
640302* - Atomic
Molecular & Chemical Physics- Atomic & Molecular Properties & Theory