Collisional relaxation of bromobenzene molecular ion by several neutral molecules has been measured by a two-photon photodissociation method. This new technique allows 2 quantitative estimation of energy loss in the relaxation process. Collisional relaxation rates have been found to be much slower
Collisional quenching of iodobenzene ion one-photon photofragmentation
β Scribed by Robert C. Dunbar
- Publisher
- Elsevier Science
- Year
- 1985
- Tongue
- English
- Weight
- 353 KB
- Volume
- 115
- Category
- Article
- ISSN
- 0009-2614
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β¦ Synopsis
The one-photon photorhssoclauon of mdobenzene IOII at 5145 run IS quenched to a substantial extent by Ion-neutral colbs~ons at pressures III the 1O-6-1O-5 Torr range. This mdxales rhat a major fraction of the ion populauon Mates wtb rates less than or of the order of lo2 s-' The quenchmg results are m accord wth quaweqtibnum theory calculabons Remterpretanon of threshold photodlssonauon data III the l&t of t.h~s colhslonal quenchmg leads to a heat of formation of 1135 kJ mol-' for phenyl cation.
π SIMILAR VOLUMES
The time-resolved total emission of SO 2 at were moni-1 1 (B B : X A ) 354.9 nm 1 1 tored following the direct excitation by a laser pulse. A three-level model was proposed 266 nm to deal with SO 2 (X 1 A 1 , A 1 A 2 , B 1 B 1 ) system. From a kinetic treatment of these measurements, the coupling co