Imaging of reaction zones in hydrocarbon--air flames by use of planar laser-induced fluorescence of CH

Journal Article · Fri Jul 01 00:00:00 EDT 1994 · Optics Letters; (United States)

DOI:https://doi.org/10.1364/OL.19.000998· OSTI ID:7164575

Paul, P H; Dec, J E ^[1]

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1. Combustion Research Facility, Sandia National Laboratories, Livermore, California 94551 (United States)

A method for imaging the reaction zones in hydrocarbon--air flames is described. The technique is based on planar laser-induced fluorescence of the CH radical by use of excitation in the [ital A][sup 2][Delta][l arrow][ital X][sup 2][Pi](1,0) band and broadband detection from the overlapping (1, 1) and (0, 0) bands. This strategy is found to provide a significant improvement in image quality compared with that from previously employed CH imaging techniques. Results are presented for propane--air flames, and a comparison of possible imaging strategies is given.

• OSTI ID: 7164575
• Journal Information: Optics Letters; (United States), Journal Name: Optics Letters; (United States) Vol. 19:13; ISSN 0146-9592; ISSN OPLEDP
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400800* -- Combustion
Pyrolysis
& High-Temperature Chemistry
AIR
CHEMICAL REACTIONS
COMBUSTION
COMBUSTION PROPERTIES
ELECTROMAGNETIC RADIATION
FLAMES
FLUIDS
FLUORESCENCE
GASES
HYDROCARBONS
IMAGE PROCESSING
LASER RADIATION
LUMINESCENCE
MEASURING METHODS
ORGANIC COMPOUNDS
OXIDATION
PROCESSING
RADIATIONS
THERMOCHEMICAL PROCESSES