On the optical probing of excited molecules that have undergone radiationless transitions
✍ Scribed by M.D. Frank-Kamenetskii; A.V. Lukashin; A.A. Puretskii
- Publisher
- Elsevier Science
- Year
- 1977
- Tongue
- English
- Weight
- 215 KB
- Volume
- 45
- Category
- Article
- ISSN
- 0009-2614
No coin nor oath required. For personal study only.
✦ Synopsis
An explanation is ghlen for the experimentally observed red-shift of the absorption band of molecules, in a moIecuIar beam, that have undergone radiationless transitions. A theoretical analysis shows that the effect originates from a decrease of the frequencies of the vibrational modes under the electronic transition. The value of the experimentally observed redshift is shown to be difficult to use for discriminations between the selective excitation of a few vibrational modes and a random distribution of the energy of excitation among all the vibrational modes of a molecule. The latter seems more prob-