Radiant energy – Invisible radiant energy responsive electric signalling – Infrared responsive
Patent
1986-01-06
1987-07-07
Howell, Janice A.
Radiant energy
Invisible radiant energy responsive electric signalling
Infrared responsive
356440, G01J 100
Patent
active
046789138
ABSTRACT:
A method and apparatus for analyzing the absorption spectra of a minute sample. The sample is placed in a hollow enclosure which is sealed after a suitable working fluid is introduced into the enclosure. When a vapor equilibrium is reached within the enclosure creating a droplet condensate of working fluid about the sample, the sample is first irradiated with dark-field visible illumination with an image thereof stored, and is then irradiated with infrared radiation and a second dark-field image stored. The stored images are analyzed and the procedure is repeated for a plurality of different frequencies spanning the range of infrared absorption of the sample.
REFERENCES:
patent: 4578584 (1986-03-01), Baumann et al.
Dodd Jeffrey J.
Dodd, Jr. Jack G.
Howell Janice A.
Walter C. McCrone Associates, Inc.
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