Raman and absorption spectrophotometric studies of selected lanthanide, californium-doped lanthanide, and actinide trihalides in the solid state

Technical Report · Tue Mar 01 04:00:00 EST 1988

OSTI ID:5023785

Wilmarth, W R

The solid-state absorption spectra of Cf(III) ions as a dopant in lanthanide trihalide hosts (LnCl/sub 3/: Ln = Ce, Sm, and Y; LnBr/sub 3/: Ln = Ce, Sm, Tb, and Y; LnI/sub 3/: Ln = Ce and Y) have been recorded. The spectra of Cf(III) have been correlated with the various crystal structures. The phonon Raman spectra and solid-state absorption spectra of PmF/sub 3/, PmCl/sub 3/, PmBr/sub 3/, and two crystal modifications of PmI/sub 3/ have been recorded. Symmetry assignments have been made for the Raman-active bands for these trihalides and also the sesquioxide. The room-temperature absorption spectra have been correlated to crystal field effects. The symmetry assignments of the Raman-active phonon modes have been made based on polarized Raman spectra from single crystals of YF/sub 3/-type orthorhombic TbF/sub 3/ and PuBr/sub 3/-type orthorhombic NdBr/sub 3/. Raman spectra of other isostructural lanthanide compounds have been recorded and compared. Symmetry assignments for these compounds have been made by analogy to the single-crystal assignments. Raman spectra have been obtained and catalogued for a number of actinide compounds. Symmetry assignments have been made for the observed Raman-active phonon bands in this work based on the assignments made for isostructural lanthanide compounds. 29 figs., 22 tabs.

• Research Organization: Tennessee Univ., Knoxville (USA)
• DOE Contract Number: AS05-76ER04447; AC05-84OR21400
• OSTI ID: 5023785
• Report Number(s): DOE/ER/04447-235; ON: DE88008234
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ABSORPTION SPECTRA
ACTINIDE COMPOUNDS
ALLOYS
BROMIDES
BROMINE COMPOUNDS
CALIFORNIUM ADDITIONS
CALIFORNIUM COMPOUNDS
CALIFORNIUM IONS
CHARGED PARTICLES
CRYSTAL FIELD
CRYSTAL STRUCTURE
CURIUM COMPOUNDS
CURIUM FLUORIDES
DOPED MATERIALS
FLUORIDES
FLUORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
IODIDES
IODINE COMPOUNDS
IONS
LASER SPECTROSCOPY
MATERIALS
NEODYMIUM BROMIDES
NEODYMIUM COMPOUNDS
PHONONS
PROMETHIUM BROMIDES
PROMETHIUM COMPOUNDS
PROMETHIUM FLUORIDES
PROMETHIUM IODIDES
QUASI PARTICLES
RAMAN SPECTRA
RAMAN SPECTROSCOPY
RARE EARTH COMPOUNDS
SPECTRA
SPECTROPHOTOMETRY
SPECTROSCOPY
STRUCTURAL CHEMICAL ANALYSIS
SYMMETRY
TERBIUM COMPOUNDS
TERBIUM FLUORIDES
TRANSPLUTONIUM COMPOUNDS
TRANSURANIUM COMPOUNDS