The collisional deactivation of O(1D) atoms by molecular oxygen
โ Scribed by D.W. McCullough; W.D. McGrath
- Publisher
- Elsevier Science
- Year
- 1971
- Tongue
- English
- Weight
- 541 KB
- Volume
- 8
- Category
- Article
- ISSN
- 0009-2614
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โฆ Synopsis
VibrationaII of mixtures of $6 excited 160190(3~~) has been observed at short delay times during the flash photoIysia 03 and 1602. This s !Y an 1802 molecule, indicating that 02( ties can only be formed by the reaction of an 160(lD) atom with C &R,O ia a product of the collisiocaI deactivation of O(lDJ by 02,
๐ SIMILAR VOLUMES
roughly4 x10-19 a room temperature rate constant of 2.2 f 0.5 L: 10-18 cm3 molec-1 se~-~ by 02 and cm3 molec-1 set-1 by dry air. Deactivation by N2 proceeds at least an order of magnihrde more slowly.
Measurements of the enhancement of CbrationalIyexcited 02('Zi) formation by added 02 in the UV flashphotolysis of 03'indicate that 02(3Z$v\*r,~ is formed in the deactitition cf O('D) by 02 with an efficiency of 5 0.3. These measurements are also consistent with the formation of 02(3~-) g y",,-, in t
The laser induced fluorescence method has been used to measure the rate of deactivation of HF(u = 1) by F, 0, and H atoms at 300ยฐK. The rate for F-atoms was found to be kF\_HF = (0.9 f 0.2) X lo4 set-' torr-', for Oatoms Lo\_m = (1.0 f 0.2) X lo5 set-' torr-', and for Hatoms, an upper limit to the r
NO, was photolyzed with 2288 A radiation at 300" and 423'K in the presence of H 2 0 , The photolysis produces O(lD) atoms which react with CO, and in some cases excess He. H20 to give H O radicals (3) O(lD) + H20 -+ 2 H 0 or are deactivated by CO to O ( 3 P ) atoms (5) O ~D ) The ratio kJkS is temp
F@. 1. Comparison or rhe monsured velocity distribution function of the incident ceaJum beam, F(v), with the relative velocity distribution function, F(vR), for the collidnnt particlea Cs and 02.