Temperature dependence of O(1D) rate constants for reactions with N2O, H2, CH4, HCl, and NH3
- 1 December 1977
- journal article
- research article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 67 (11) , 5021-5025
- https://doi.org/10.1063/1.434724
Abstract
Absolute rate constants are reported for the deactivation of O(1 D) by five trace atmospheric constituents for the temperature range 200–350 K. O(1 D) atoms produced by photolyzing ozone with a frequency quadrupled pulse from a Nd‐YAG laser are monitored directly by means of the O(1 D) →O(3 P) emission at 630 nm. All the gases studied here are thought to deactivate O(1 D) primarily through reactive channels. Their rate constants exhibit no detectable temperature dependence. The rate constants are (in units of 10−10 cm3/molecule⋅s) N2O: 1.1,±0.2, H2: 0.99±0.3, HCl: 1.4±0.4, NH3: 2.5±0.5, CH4: 1.4±0.4. The present results and those of our previous studies are compared with rate constants obtained using the time‐resolved attenuation of resonance absorption technique.Keywords
This publication has 30 references indexed in Scilit:
- Absolute rate constant determinations for the deactivation of O(1D) by time resolved decay of O(1D) →O(3P) emissionThe Journal of Chemical Physics, 1976
- O2(1∑+g) relaxation in collisions. Part 2.—Temperature dependence of the relaxation by hydrogenJournal of the Chemical Society, Faraday Transactions 2: Molecular and Chemical Physics, 1976
- Quenching of O2(1? + g ) by ground state O2Journal of the Chemical Society, Faraday Transactions 2: Molecular and Chemical Physics, 1975
- A Review of Upper Atmospheric PhotochemistryCanadian Journal of Chemistry, 1974
- Electronically excited oxygen atoms, O(21D2). A time‐resolved study of the collisional quenching by the gases H2, D2, CH4, NO, NO2, N2O, and C3O2 using atomic absorption spectroscopy in the vacuum ultravioletInternational Journal of Chemical Kinetics, 1973
- Direct Flow Measurement of O2(b1Σg+) Quenching RatesThe Journal of Chemical Physics, 1970
- Optical Emission from O(1D) and O2(b 1Σg) in Ultraviolet Photolysis of O2 and CO2The Journal of Chemical Physics, 1970
- Competitive Reactions of the Excited Oxygen Atoms, O(1D)*Journal of the American Chemical Society, 1969
- Reaction of O(1D) with H2 and the Reactions of H and OH with OzoneThe Journal of Chemical Physics, 1967
- Primary Processes in Ozone PhotolysisThe Journal of Chemical Physics, 1966