Laser-induced fluorescence study of OH in flat flames of 1--10 bar compared with resonance CARS experiments

Journal Article · Sun Apr 01 04:00:00 EDT 1990 · Applied Optics; (USA)

DOI:https://doi.org/10.1364/AO.29.001560· OSTI ID:6834818

Kohse-Hoinghaus, K; Meier, U ^[1]; Attal-Tretout, B ^[2]

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1. Institut fur Physikalische Chemie der Verbrennung, DFVLR, 7000 Stuttgart 80, Federal Republic of Germany (DE)
2. 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), Journal Name: Applied Optics; (USA) Vol. 29:10; ISSN 0003-6935; ISSN APOPA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400800* -- Combustion
Pyrolysis
& High-Temperature Chemistry
AIR
ALKANES
CHEMICAL ANALYSIS
COMBUSTION PRODUCTS
EMISSION SPECTROSCOPY
FLAME PHOTOMETRY
FLAMES
FLUIDS
FLUORESCENCE SPECTROSCOPY
GASES
HIGH PRESSURE
HYDROCARBONS
HYDROXYL RADICALS
LASER SPECTROSCOPY
LINE WIDTHS
METHANE
ORGANIC COMPOUNDS
PHOTOMETRY
RADICALS
RAMAN SPECTROSCOPY
SPECTROSCOPY
TEMPERATURE MEASUREMENT