Temperature dependence of the excited- state absorption of alexandrite
β Scribed by Shand, M.; Jenssen, H.
- Book ID
- 117881650
- Publisher
- IEEE
- Year
- 1983
- Tongue
- English
- Weight
- 531 KB
- Volume
- 19
- Category
- Article
- ISSN
- 0018-9197
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π SIMILAR VOLUMES
## Abstract Raman scattering is used to investigate the electronic excitedβstates of alexandrite at low temperature (13 K). The Raman spectra of Cr^3+^ ions in two nonβequivalent types of crystal field sites, one having mirror symmetry __C__~s~ the other having inversion symmetry __C__~1~, are repo
## Abstract Photocurrent of lead tungstate (PbWO~4~) single crystals has been studied in the temperature range from 4 K to 270 K. The excitation spectrum of the photocurrent characterized by a prominent peak at 4.1 eV and a rise above 4.5 eV was obtained at 270 K. Below 150 K, the photocurrents exc