OH chemiluminescent radiation from lean hydrogen-oxygen flames
- 15 August 1974
- journal article
- research article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 61 (4), 1352-1356
- https://doi.org/10.1063/1.1682059
Abstract
The OH radiation intensity in the 3064 Å band, the temperature, and the OH concentration were measured as a function of the height above the face of a premixed H2/O2 flat flame burner. The burner was operated fuel lean at subatmospheric ambient conditions. Examination of possible reaction mechanisms that could produce chemiluminescent OH radiation from these hydrogen‐lean flames led to results consistent with those obtained in hydrogen‐rich flames. The termolecular rate coefficient for the reaction H+OH+OH→H2O+OH* was found to be (2.3±0.9) × 10−32 cm6 molecules−2 · sec−1. The value represents an upper bound for the rate coefficients of the reactions which might contribute to the excitation of OH.Keywords
This publication has 11 references indexed in Scilit:
- Shock-Tube Study of OH (2Σ — 2Π) LuminescencePhysics of Fluids, 1969
- Viscous Drag of Bodies Moving near a Free SurfacePhysics of Fluids, 1969
- Photometric measurements on the deviations from the equilibrium state in flames.AIAA Journal, 1968
- Quenching of excited hydroxyl (2Σ+, υ′ = 0) radicals in flamesJournal of Quantitative Spectroscopy and Radiative Transfer, 1967
- The influence of vibration-rotation interaction on intensities in the electronic spectra of diatomic molecules I. The hydroxyl radicalProceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1962
- Abnormal Excitation of OH in H2/O2/N2 FlamesThe Journal of Chemical Physics, 1959
- Hydroxyl concentrations in rich hydrogen-air flames held on porous burnersCombustion and Flame, 1958
- The concentration of hydroxyl and of oxygen atoms in gases from lean hydrogen-air flamesCombustion and Flame, 1958
- Excitation of spectra of OH in hydrogen flames and its relation to excess concentrations of free atomsProceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1958
- Spectroscopic studies of low-pressure flames - V. Evidence for abnormally high electronic excitationProceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1951