Hyperfine structure in the two lowest electronic states of PrO by molecular-beam laser-rf double resonance
- Argonne National Lab., IL (United States)
The hyperfine structure (hfs) splittings in the electronic ground state ([Omega] = 3.5, [nu] = 0) and the first excited electronic level (Energy = 220 cm[sup [minus]1], [Omega] = 4.5, [nu] = 0) of [sup 141]PrO have been measured over a broad range of J-values to a precision of about [+-]3 kHz. No perturbations are observed. The levels are represented as states of Pr(III) 4[line integral][sup 2]6s in an axial electric field, and the hyperfine structure resulting from the combined hfs and rotational Hamiltonians is worked out. The contribution due to the interaction between the two states of different [Omega] is found to be important. A single least-squares fit is made of the resulting theoretical expressions to the 166 radiofrequency (rf) measurements in the two states. Efforts are made to identify the contributions analogous to the conventional terms involving b, c, and eqQ. The perturbations in the optical spectra (of systems XVII and of the band at 6,100 [angstrom]) are found to be in the common upper level (as previously reported), as is the [Lambda]-doubling. The hyperfine structure of the upper state is determined to a precision of a few Mhz.
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 6923326
- Journal Information:
- Journal of Molecular Spectroscopy; (United States), Vol. 144; ISSN 0022-2852
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
PRASEODYMIUM OXIDES
HYPERFINE STRUCTURE
DATA ANALYSIS
EXPERIMENTAL DATA
PRASEODYMIUM 141
VISIBLE SPECTRA
WAVELENGTHS
CHALCOGENIDES
DATA
INFORMATION
INTERMEDIATE MASS NUCLEI
ISOTOPES
NUCLEI
NUMERICAL DATA
ODD-EVEN NUCLEI
OXIDES
OXYGEN COMPOUNDS
PRASEODYMIUM COMPOUNDS
PRASEODYMIUM ISOTOPES
RARE EARTH COMPOUNDS
RARE EARTH ISOTOPES
RARE EARTH NUCLEI
SPECTRA
STABLE ISOTOPES
664400* - Experimentally Derived Information on Atomic & Molecular Properties- (1992-)