Laser-induced saturated fluorescence investigations of CH, CN and NO in flames

Conference · Wed Dec 31 23:00:00 EST 1980 · Symp. (Int.) Combust., (Proc.); (United States)

OSTI ID:5384606

Verdieck, J F; Bonczyk, P A

Laser-induced fluorescence from CH, CN, and NO radicals was observed from appropriate atmospheric pressure laboratory flames. Narrowband dye lasers, driven by suitable harmonics of a 10 Hz, 10 nanosecond, pulsed neodymium:YAG laser, provided fluorescence excitation. Saturation of the fluorescence was attained for CH and CN. Concentrations of these two species were estimated through use of a simplified two-level model which accounts for rotational redistribution. The fluorescence measurements were in good agreement with absorption measurements made on the same flames. Saturation of NO fluorescence in a flame was not observed for incident laser spectral intensities up to 6*10/sup 6/ W/cm/sup 2/-cm/sup -1/. 19 refs.

• Research Organization: United Technol Corp, East Hartford, Conn
• OSTI ID: 5384606
• Report Number(s): CONF-800809-
• Journal Information: Symp. (Int.) Combust., (Proc.); (United States), Journal Name: Symp. (Int.) Combust., (Proc.); (United States); ISSN SYMCA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400800* -- Combustion
Pyrolysis
& High-Temperature Chemistry
CHALCOGENIDES
COMBUSTION PRODUCTS
DYE LASERS
FLAMES
FLUORESCENCE
LASERS
LIQUID LASERS
LUMINESCENCE
NITRIC OXIDE
NITROGEN COMPOUNDS
NITROGEN OXIDES
OXIDES
OXYGEN COMPOUNDS
RADICALS