Sensing of methane

Details Sensing of methane Sensing of methane

1988-05-06

1989-10-03

Howell, Janice A.

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

G01J 100

Patent

active

048719161

ABSTRACT:
A spectroscopic method of sensing the presence of methane in an atmosphere includes directing through the atmosphere light emitted by a neodymium laser at a wavelength having a fluorescence linewidth which embraces at least one significant absorption line of the v.sub.2 +2v.sub.2 band of methane.

REFERENCES:
patent: 3998557 (1976-12-01), Javan
patent: 4450356 (1984-05-01), Murray et al.
patent: 4489239 (1984-12-01), Grant et al.
patent: 4520265 (1985-05-01), Griggs et al.
patent: 4555627 (1985-11-01), McRae, Jr.

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