Symmetry of the fluorescence and absorption spectra of anthracene crystals
β Scribed by B.J. Mulder
- Publisher
- Elsevier Science
- Year
- 1968
- Tongue
- English
- Weight
- 275 KB
- Volume
- 29
- Category
- Article
- ISSN
- 0022-3697
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π SIMILAR VOLUMES
## Conditions for breakdown of the structural and intensity mirror symmetry relationship between the one-phonon spectra in the absorption and fluorescence spectra of molecular impurities arc established. A criterion is giv-en for determining when the contribution of quadratic coupling to the zero-
Saturation of the fluorescenc=z of tetracene in anthracene crystal with increasing excitation was ob--served at liquid nitrogen temperature. Samples were excited by a iow energy electron beam (X 20 kev). The reIation between t!e fluorescence intensity and the electron beam density was explained by s