Simultaneous measurements of velocity, temperature, and pressure using rapid cw wavelength-modulation laser-induced fluorescence of OH

Journal Article · Fri Jun 15 00:00:00 EDT 1990 · Optics Letters; (USA)

DOI:https://doi.org/10.1364/OL.15.000706· OSTI ID:6734889

Chang, A Y; Battles, B E; Hanson, R ^[1]

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1. High Temperature Gasdynamics Laboratory, Department of Mechanical Engineering, Stanford University, Stanford, California 94305 (USA)

The beam from a rapid-tuning single-frequency laser was used to probe the {ital R}{sub 1}(7) and {ital R}{sub 1}(11) {ital A} {sup 2}{Sigma}{sup +} {l arrow} {ital X} {sup 2}{Pi} (0, 0) line pair of OH at a 45{degree} incident angle in a combustion-driven, supersonic free jet. Absorption line shapes were recorded in spatially resolved, single-point fluorescence. The Doppler shift, intensity ratio, and collisional broadening of the measured line pair were used to determine velocity, temperature, and pressure. The repetition rate of the measurement was 3 kHz.

• OSTI ID: 6734889
• Journal Information: Optics Letters; (USA), Vol. 15:12; ISSN 0146-9592
• Country of Publication: United States
• Language: English

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