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Record 16 of 16873
Qualitative and quantitative flow visualization technique using ozone
External Online Source: doi:10.1063/1.1135921
Author and Affiliation:
Dickerson, R. R.
Stedman, D. H.
Abstract: The paper describes a new flow-visualization technique based on the absorption of ultraviolet light by ozone. Ozone is an excellent tracer, because as a gas it has the same effective physical properties as air. Ozone strongly absorbs the principal line (253.7 nm) of a mercury lamp, so that when an ozone-traced flow passes between a mercury lamp and a fluorescent screen, a sharp, shadow-like image of the ozone tracer is cast on the screen. Quantitative photometry can be carried out by replacing the screen with ultraviolet detectors that yield the path-integrated column density of ozone in the flow. High-speed quantitative point monitoring (10 Hz at 10 ppb O3) is possible with capillary probes and chemiluminescent analysis.
Publication Date: Jun 01, 1979
Document ID:
19790053263
(Acquired Dec 01, 1995)
Accession Number: 79A37276
Subject Category: INSTRUMENTATION AND PHOTOGRAPHY
Document Type: Journal Article
Publication Information: Review of Scientific Instruments; p. June 197; 50
Publisher Information: United States
Financial Sponsor: NASA; United States
Description: 3p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: FLOW VISUALIZATION; GAS FLOW; OZONE; TRACERS; ULTRAVIOLET ABSORPTION; ARIEL; CHEMILUMINESCENCE; FLUORESCENCE; MERCURY LAMPS; ULTRAVIOLET DETECTORS; ULTRAVIOLET PHOTOMETRY
Imprint And Other Notes: Review of Scientific Instruments, vol. 50, June 1979, p. 705-707. NASA-supported research.
Miscellaneous Notes: p. 705-707. NASA-supported research
Availability Source: Other Sources
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