Radiant energy – Luminophor irradiation
Patent
1984-06-04
1987-03-17
Fields, C. E.
Radiant energy
Luminophor irradiation
2504591, 2504611, 436166, 436172, G01N 2164, G01N 2175
Patent
active
046510109
ABSTRACT:
A sensing system for the detection of trace gases in the atmosphere or contaminates on a surface. Particular chemical substances are detected at remote points by placing a sensor unit in the vicinity of the area to be examined and illuminating the area with a laser beam generated by the sensor unit. An optical detector, also carried by the sensor unit, registers the fluorescence produced by the substance illuminated and relays this information by a telemetry link back to the base site. The utility of the system is broadened by providing a chemical reactant selected to react with the substance to be detected to produce a reaction product that fluoresces strongly at the wavelength of the laser light. The chemical reactant is carried by the sensor unit and is sprayed into the area to be examined. The sensor unit carrying the chemical reactant can also be used on location, for example, with a hand-held unit that sprays the chemical reactant on a surface suspected of being contaminated and detecting the resulting fluorescence of the reaction product.
REFERENCES:
patent: 3603952 (1971-09-01), Smith
patent: 4013888 (1977-03-01), Macias et al.
patent: 4394573 (1983-07-01), Correa et al.
Edward J. Stone, "Ultraviolet Fluorescence Water Vapor Instrument for Aircraft", Review of Scientific Instruments, vol. 51, No. 5, (May 1980) pp. 677-678.
Barrett E. Thorpe
Fields C. E.
Hannaher Constantine
Laser Science, Inc.
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