Deactivation of vibrationally excited ozone by O( 3P) atoms
Abstract
Using laser-induced fluorescence of ozone (to measure the rate of disappearance of O 3†) and NO 2 titration (to determine O atom concentrations), we have determined bimolecular rate constants for the deactivation by O( 3P 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 O 3 + O → 2O 2. If the non-reactive pathway (a) is assumed to dominate, then O( 3P) is 150 times more effective than O 2 in deactivating O †3. If chemical reaction (b) is dominant, the bimolecular rate constant for O †3 + O( 3P) is larger by a factor of 150-1500 than that for ground-state ozone.
- Publication:
-
Chemical Physics Letters
- Pub Date:
- September 1976
- DOI:
- 10.1016/0009-2614(76)80659-8
- Bibcode:
- 1976CPL....42..488W
- Keywords:
-
- Deactivation;
- Fluorescence;
- Laser Applications;
- Molecular Relaxation;
- Ozone;
- Reaction Kinetics;
- Carbon Dioxide Lasers;
- Chemical Reactions;
- Energy Dissipation;
- Laser Induced Fluorescence;
- Molecular Energy Levels;
- Oxygen Atoms;
- Signal To Noise Ratios;
- Stark Effect;
- Titration;
- Atomic and Molecular Physics