DocumentCode
2903353
Title
Requirements for temperature measurements in nonequilibrium flows using laser-induced O2 fluorescence
Author
Grinstead, Jay H. ; Laufer, Gabriel
Author_Institution
Dept. of Mech. & Aerosp. Eng., Virginia Univ., VA, USA
fYear
1991
fDate
27-31 Oct 1991
Firstpage
262
Lastpage
269
Abstract
Conditions for temperature measurements in nonequilibrium flows using O2 laser-induced fluorescence (LIF) are presented. A computer model of the LIF process was developed and used to identify pairs of ro-vibronic transitions originating from a single vibrational level and spectrally isolated from ro-vibronic transitions from adjacent vibrational states. ArF lasers, KrF lasers, and anti-Stokes shifted ArF lasers were considered as excitation sources. It was found that the ArF laser can be used for rotational temperature measurement when the vibrational temperature is below 750 K. KrF lasers are suitable for rotational temperature measurement when the vibrational temperature is above 750 K
Keywords
argon compounds; excimer lasers; krypton compounds; molecular fluorescence; molecular photoexcitation; molecular rotation-vibration; molecular vibronic states; nonequilibrium flow; oxygen; physics computing; spectral methods of temperature measurement; 750 K; ArF lasers; KrF lasers; O2; anti-Stokes shifted ArF lasers; computer model; laser-induced O2 fluorescence; nonequilibrium flows; ro-vibronic transitions; rotational temperature; temperature measurements; vibrational states; vibrational temperature; Aerospace engineering; Fluorescence; Laser excitation; Laser modes; Laser transitions; Rotation measurement; Shock waves; Temperature distribution; Temperature measurement; Vibration measurement;
fLanguage
English
Publisher
ieee
Conference_Titel
Instrumentation in Aerospace Simulation Facilities, 1991. ICIASF '91 Record., International Congress on
Conference_Location
Rockville, MD
Type
conf
DOI
10.1109/ICIASF.1991.186248
Filename
186248
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