Laser-induced fluorescence study of OH in flat flames of 1--10 bar compared with resonance CARS experiments
- Institut fur Physikalische Chemie der Verbrennung, DFVLR, 7000 Stuttgart 80, Federal Republic of Germany (DE)
- Office National d'Etudes et Recherches Aerospatiales, Chatillon, France (FR)
Laser-induced fluorescence (LIF) measurements of OH were performed in flat stoichiometric CH{sub 4}/air flames burning at 1, 3, 5, 7, and 9.6 bar, which had previously been investigated using OH resonance CARS. In the LIF study, line shape information and temperatures were extracted from excitation spectra; in addition, OH profiles as a function of height above the burner surface and an estimate of the OH concentration for the different flames were obtained. The perspectives and feasibility of quantitative fluorescence measurements in high pressure flames are discussed, particularly in comparison with the application of resonance CARS. Key words: OH laser-induced fluorescence, high pressure flames, line shape parameters, temperature measurement, OH concentrations, comparison with resonance CARS.
- OSTI ID:
- 6834818
- Journal Information:
- Applied Optics; (USA), Vol. 29:10; ISSN 0003-6935
- Country of Publication:
- United States
- Language:
- English
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ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
FLAMES
TEMPERATURE MEASUREMENT
HYDROXYL RADICALS
FLUORESCENCE SPECTROSCOPY
METHANE
COMBUSTION PRODUCTS
AIR
CHEMICAL ANALYSIS
FLAME PHOTOMETRY
HIGH PRESSURE
LINE WIDTHS
RAMAN SPECTROSCOPY
ALKANES
EMISSION SPECTROSCOPY
FLUIDS
GASES
HYDROCARBONS
LASER SPECTROSCOPY
ORGANIC COMPOUNDS
PHOTOMETRY
RADICALS
SPECTROSCOPY
400800* - Combustion
Pyrolysis
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