lL11c coefficrents for coll1s1on~1 removal of Ott D) by SLY atnlosplrertc gases have been measured by momtormg the appearance of O(3P) followng photolvtlc productlon of O(' D) The measured values, x"hI 2 SJ, m units of IO-" cm3 molccule-' s-l arc k-0, = ?? 8 5 :! 3, k~~ = 2 52 ? 0.25, k-co, = 10 4 +
Effect of diabatic correlation on the reactions of O(2 3P, 2 1D) with N2 O and CO2
โ Scribed by J.R. Wiesenfeld
- Publisher
- Elsevier Science
- Year
- 1977
- Tongue
- English
- Weight
- 471 KB
- Volume
- 45
- Category
- Article
- ISSN
- 0009-2614
No coin nor oath required. For personal study only.
โฆ Synopsis
Akhougfi correlation diagrams based upon the appkation of spin and angular momentum conservation have been shown to be a useFu1 device in interpreting the chemistry of electronically excited atoms. experimental observations suggest that a more complete understanding of such chemical processes requires some insight into the electronic structure of the collision complex. In the absence of such information, it is possible to consider the role of diabatic correlations on the energetics of elementary processes with a view toward analyzing the behavior of the reactants along the reaction coordinate. Here, the aeronomically interesting reactions of ground state and electronically excited oxygen atoms with N20 and CO2 areanalyzed and the effects of low-lying molecular excited states on-the reactivity of these
๐ SIMILAR VOLUMES
O ( l D ) , produced from the photolysis ofN,O at 2139 A, reacts with N,O in accord with: We have used the method of chemical difference to obtain an accurate measure of k,/k, = 0.59 f 0.01. Furthermore, the quantum yield of production of O ( , P ) , either on direct photolysis or on deactivation o
The rate constant for the reaction of O(") with H202 was measured as a function of temperature and the [H202]0/[0]0 ratio. The numerical solution of the appropriate rate equations was used to arrive a t a mechanism which adequately describes our results and the rather divergent data in the literatur
The rate constants for the reaction of CN with NzO and COz have been measured by the laser dissociation/laser-induced fluorescence (two-laser pump-probe) technique at temperatures between 300 and 740 K. The rate of CN + NzO was measurable above 500 K, with a least-squares averaged rate constant, k =
The reactions of labeled NL5NOwith CO, NO, 02, "02, N,, NO2, and N,O have been investigated using a tandem ICR instrument. In each case the total rate coefficient, product distribution, and kinetic energy dependence were measured. The results indicate that very specific reaction mechanisms govern th
The reaction of CF3 radicals with Ha0 (D20) has been studied over the range of 533-723 K using the photolysis and the pyrolysis of CFJ as the free radical source. Arrhenius pa- rameters for the reactions where X = H or D, relative to CF:j radical recombination are given by log kHlkf'2 = (5.12 f 0.1