The first application of picosecond polarization spectroscopy to probe gas phase intramolecular relaxation under collision free conditions is reported. This technique is a sensitive probe of molecular rotation and when applied to trans-stilbene vapor at 2OO'C an exponential decay in the anisotropy w
Effect of intramolecular dynamics on state-to-state photochemistry: Fragmentation of the à state of trans-DONO
✍ Scribed by J.H. Shan; R. Vasudev
- Publisher
- Elsevier Science
- Year
- 1987
- Tongue
- English
- Weight
- 463 KB
- Volume
- 141
- Category
- Article
- ISSN
- 0009-2614
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✦ Synopsis
The effect of intramolecular dynamics on state-selected photolysis of trans-DON0 is probed through measurements on the OD fragment ejected by the A state with one and two quanta of energy in the -N=O stretching vibration uZ. The fragment in the latter case is rotationally hotter, more polarized at high rotational energies, and is associated with a higher population non-equilibrium in the n-doublet fine-structure states. These effects are traced back to coupling between the u2 vibration and the in-plane DON angle-bending motion uJ in the parent molecule,
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