A new method, femtosecond time-resolved stimulated emission pumping fluorescence depletion (FS TR SEP FD), has been developed to study the vibrational relaxation of electronic excited states of molecules. Two relaxation rates of dye molecules in different solvents have been observed: (i) the intramo
β¦ LIBER β¦
Study of single vibrational level relaxation in CS2(R3B2) by stimulated emission pumping
β Scribed by Xirong Chen; Li Li; Hong Zhao; Cunhao Zhang
- Publisher
- Elsevier Science
- Year
- 1987
- Tongue
- English
- Weight
- 370 KB
- Volume
- 136
- Category
- Article
- ISSN
- 0009-2614
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β¦ Synopsis
The relaxation of single vibrational levels of CS2 (R 3B2) has been studied by the stimulated emission pumping technique for the first time. The relaxation rate of the 0,6,0 and 0,8,0 levels is found to be 0.89x lOa s-r TOK-' and 1.2x 10' s-r Tow' respectively. These values are about an order of magnitude higher than the R 3Bz state quenching rate. This is direct experimental evidence that the vibrational relaxation process within this triplet takes place essentially prior to quenching.
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