Radiant energy – Luminophor irradiation
Patent
1994-12-06
1995-10-17
Hannaher, Constantine
Radiant energy
Luminophor irradiation
2504591, 2503385, G01J 158, G01N 2164, G01L 1102
Patent
active
054593247
ABSTRACT:
A method for the optical determination of the pressure of a gaseous mixture includes the steps of exciting in the infrared range the molecules of a gas of the mixture, from a first vibrational level towards a second vibrational level, measuring the duration of the fluorescence of a line of the emission spectrum of the gas from one of the rotational sub-levels of the second vibrational level towards another rotational sub-level of a third vibrational level, and deducing from the duration the pressure of the gaseous mixture.
REFERENCES:
patent: 4880972 (1989-11-01), Brogardh et al.
patent: 5006716 (1991-03-01), Hall
patent: 5043585 (1991-08-01), Fehrenbach et al.
patent: 5055692 (1991-10-01), Abiss et al.
patent: 5111055 (1992-05-01), Fima
patent: 5160843 (1992-11-01), Lehto
Dewey, C. Forbes, Jr. "Quantitative Flow Field Visualization Utilizing Laser-Induced Fluorescence", May 1976 pp. 17-1-7.
"Measurements Of Temperature, Density, Pressure, And Their Fluctuations In Supersonic Turbulence Using Laser-Induced Fluorescence", K. P. Gross et al., Experiments in Fluids, 5, pp. 372-380, 1987.
Hannaher Constantine
Sextant Avionique
Tyler Virgil O.
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