Absorption and emission spectra of U4+ diluted in ThBr4 single crystals
Creators
- 1. Laboratoire de Radiochimie, Institut de Physique Nucleaire, Universite de Paris-Sud, BP No. 1 91406 Orsay, France
Description
The absorption and fluorescence spectra of U4+ diluted in single crystals of ThBr4 have been measured at room temperature (77 degreeK) and 4.2 degreeK. The crystal symmetry site of the U4+ ion is D/sub 2d/. Twenty three levels have been assigned and a least-squares fit varying nine parameters (and fixing three parameters) gave a mean energy deviation of 89 cm-1. The values of the parameters obtained from the best fit are (in cm-1) F2=43 770 +- 797, F4=31 302 +- 4 200, F6=22 248 +- 2 425, zeta=1719 +- 44, α=36, β=-600, γ=1000, B20=-919 +- 85, B40=-305 +- 70, B44=-825 +- 137, B60=636 +- 917, and B64=-1937 +- 202. There does not appear to be a systematic correlation between the crystal field parameters obtained for U4+ in ThBr4 and those reported earlier for U4+ in UCl4 or in ZrSiO4
Additional details
Identifiers
- DOI
- 10.1063/1.434994;
Publishing Information
- Journal Title
- The Journal of Chemical Physics
- Journal Volume
- 67
- Journal Issue
- 4
- Series
- J. Chem. Phys.
- Journal Page Range
- 1620-1625
- ISSN
- 0021-9606
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 9351859
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- ABSORPTION SPECTRA; CRYSTAL FIELD; EMISSION SPECTRA; ENERGY LEVELS; FLUORESCENCE; LOW TEMPERATURE; MEDIUM TEMPERATURE; THORIUM BROMIDES; ULTRALOW TEMPERATURE; URANIUM ADDITIONS; URANIUM IONS
- Descriptors DEC
- ACTINIDE COMPOUNDS; ATOMIC IONS; BROMIDES; BROMINE COMPOUNDS; CHARGED PARTICLES; HALIDES; HALOGEN COMPOUNDS; IONS; LUMINESCENCE; SPECTRA; THORIUM COMPOUNDS
Optional Information
- Notes
- Updated automatically by Metadata and Full-Text Enrichment Agent