PHYSICS OF VIBRONIC TRANSITIONS IN THE SPECTRA OF RARE EARTH IONS IN CRYSTALS.
Abstract
Vibronic transitions due to the existence of a gadolinium ion adjacent to a H(-) ion in CaF2 were investigated. The association of the RE(3+) and the H(-) ion in the host lattice is manifested by: (1) The appearance of new infra-red absorption frequencies which are not observed in undoped and hydrogenated CaF2. The frequencies depend on the particular RE ion doping. (2) Observation of new electronic transitions in the near U.V. of gadolinium due to new sites adjacent to an H(-) ion. (3) Observation of vibronic transitions separated from the corresponding parent transitions of the RE ion by the infra-red absorption frequency of the localized H(-). The IR, electronic and vibronic spectra are strongly dependent on the concentration of the RE doping, the particular dopant and the mode of annealing. Conclusions can be derived from comparison of hydrogenated and deuterated crystals. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 25, 1967
- Accession Number
- AD0653634
Entities
People
- S. Yatsiv
- W. Low
Organizations
- Hebrew University of Jerusalem