Deactivation of vibrationally excited ozone by O(3P) atoms

✍ Scribed by Gary A. West; Ralph E. Weston Jr.; George W. Flynn

• Publisher: Elsevier Science
• Year: 1976
• Tongue: English
• Weight: 581 KB
• Volume: 42
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(76)80659-8

✦ Synopsis

Using laser-induced fluorescence of ozone (to measure the rate of disappearance of Os?) and NOz titration (to determine 0 atom concentrations), we have determined bimolecular rate constants for the deactivation by 0(3? atoms) of ozone in excited stretching and bending modes. These experiments do not distinguish between deactivation by (a) the exchange of vibrational and translational energy or (b) the chemical reaction 03 + 0 + 202, If the non-reactive pathway (a) is assumed to dominate, then O(3P) is 150 times more effective than 02 in deactivating 05. If chemical reaction (b) is dominant, the bimolecular rate constant for 05 + 0(3P) is larger by a factor of 150-1500 than that for ground-state ozone.