Observations on O(1D→3P) and O2(b 1Σg+ →X 3Σg−) following O2 photodissociation
- 1 November 1978
- journal article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 69 (9) , 4053-4060
- https://doi.org/10.1063/1.437136
Abstract
Time-resolved studies have been made on the energy transfer process O(1D)+O2→O(3P)+O2(b 1Σg+)v. O(1D) was generated by O2 photodissociation at ?1600 Å, using an H2 laser, and observed by its emission at 6300 Å. Only the v=0 and 1 levels are produced in O2(b1Σg+) by energy transfer, in the ratio k1/k0=0.7. The quantum efficiency of converting O(1D) electronic energy into O2(b 1Σg+) is 0.77±0.2, in agreement with the most recent determination. O2(b 1Σg+)v=1 is quenched very rapidly by O2, with a rate coefficient of 2.2×10−11 cm3 molec−1 s−1. This is almost six orders of magnitude faster than O2 quenching of O2(b 1Σg+)v=0 and accounts for the weakness of emission from the v=1 level in the terrestrial airglow.Keywords
This publication has 30 references indexed in Scilit:
- Temperature dependence of O(1D) rate constants for reactions with N2O, H2, CH4, HCl, and NH3The Journal of Chemical Physics, 1977
- 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
- Absorption Cross Sections of O2(a1Δg) and O2(X3Σg−) in the Region from 1087 to 1700 ÅCanadian Journal of Physics, 1975
- Experimental Determination of Absolute A Coefficients for 'Forbidden' Atomic Oxygen LinesCanadian Journal of Physics, 1975
- Production de O2(b1∑g+), &([a-z]+);′ = 0, 1 et 2 par la reaction O(21D2) + O2(X3∑g−)Canadian Journal of Chemistry, 1974
- Excited State Chemistry in the StratosphereCanadian Journal of Chemistry, 1974
- The photolysis of ozone by ultraviolet radiation. VI. Reactions of O( 1 D)Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1972
- Photodissociation of O3 in the Hartley Band. Reactions of O(1D) and O2(1Σg+) with O3 and O2The Journal of Chemical Physics, 1971
- The Reaction of the Electronically Excited Oxygen Atom O(1D2) with Nitrous OxideCanadian Journal of Chemistry, 1971
- Optical Emission from O(1D) and O2(b 1Σg) in Ultraviolet Photolysis of O2 and CO2The Journal of Chemical Physics, 1970