Detection of OH in a flame by degenerate four-wave mixing

Journal Article · Thu May 01 00:00:00 EDT 1986 · Opt. Lett.; (United States)

DOI:https://doi.org/10.1364/OL.11.000279· OSTI ID:5721306

Ewart, P; O'Leary, S V

The detection of OH in a laminar premixed air-methane flame by degenerate four-wave mixing (DFWM) is reported. The four-wave mixing spectrum was recorded in the region of the R/sub 1/, R/sub 2/ band heads of the (0, 0) /sup 2/..sigma..-/sup 2/Pi transition, showing clearly resolved rotational structure. Applications of the DFWM technique to combustion diagnostics are discussed. As an example, the distribution of sodium atoms in a sodium-seeded flame has been measured using a 90/sup 0/ geometry to enhance spatial resolution.

• Research Organization: Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU UK
• OSTI ID: 5721306
• Journal Information: Opt. Lett.; (United States), Vol. 11:5
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
FLAMES
LASER SPECTROSCOPY
HYDROXYL RADICALS
FLUORESCENCE SPECTROSCOPY
COMBUSTION
DIAGNOSTIC TECHNIQUES
FREQUENCY MIXING
RESOLUTION
SODIUM
ALKALI METALS
CHEMICAL REACTIONS
ELEMENTS
EMISSION SPECTROSCOPY
METALS
OXIDATION
RADICALS
SPECTROSCOPY
THERMOCHEMICAL PROCESSES
400800* - Combustion
Pyrolysis
& High-Temperature Chemistry