Laser-fluorescence imaging of O/sub 2/ in combustion flows using an ArF laser

Journal Article · Wed Jan 01 00:00:00 EST 1986 · Opt. Lett.; (United States)

DOI:https://doi.org/10.1364/OL.11.000007· OSTI ID:6443465

Lee, M P; Paul, P H; Hanson, R K

Planar laser-induced fluorescence images of O/sub 2/ in flames have been acquired using an ArF excimer laser as the excitation source. The 193-nm radiation excites several rovibronic lines of the O/sub 2/ Schumann--Runge (B/sup 3/..sigma../sub u//sup -/reverse arrowX/sup 3/..sigma../sub g//sup -/) band system. The resultant fluorescence is detected with an image-intensified 100 x 100 photodiode array camera. Images from several CH/sub 4//air flames are presented. High-speed sequences of images have been acquired using the high-repetition- rate capability of the excimer laser. These sequences display the real-time evolution of discrete flame structured. The dependence of the fluorescence signal on temperature and O/sub 2/ concentration discussed.

• Research Organization: High Temperature Gasdynamics Laboratory, Department of Mechanical Engineering, Stanford University, Stanford, California 94305
• OSTI ID: 6443465
• Journal Information: Opt. Lett.; (United States), Vol. 11:1
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
FLAMES
FLUORESCENCE SPECTROSCOPY
OXYGEN
COMBUSTION PROPERTIES
EXCIMER LASERS
FLUORESCENCE
GAS FLOW
IMAGES
QUANTITATIVE CHEMICAL ANALYSIS
CHEMICAL ANALYSIS
ELEMENTS
EMISSION SPECTROSCOPY
FLUID FLOW
GAS LASERS
LASERS
LUMINESCENCE
NONMETALS
SPECTROSCOPY
400800* - Combustion
Pyrolysis
& High-Temperature Chemistry