N-lines in the luminescence spectra of Cr3+-doped spinels: IV. Excitation spectra
β Scribed by J. Derkosch; W. Mikenda
- Book ID
- 107797214
- Publisher
- Elsevier Science
- Year
- 1983
- Tongue
- English
- Weight
- 592 KB
- Volume
- 28
- Category
- Article
- ISSN
- 0022-2313
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π SIMILAR VOLUMES
It is known that in rare-gas and alkali-halide crystals the excitons exist both in a free state and in the form of excimer two-site quasi-molecules. Due to mixing of the states of two types, vibrational levels of excimer quasi-molecules turn to narrow subbands. Thermal relaxation of an exciton can o
In this paper, the absorption spectrum of PbWO 4 :Cr 3+ crystals is measured at room temperature in the wavelength range from 340 to 520 nm. The d-d transitions of Cr 3+ ions in PbWO 4 crystals with tetragonal symmetry are calculated by the crystal-field theory. The theoretical results are in good a