Non-pressure-dependancy infrared absorption spectra recording, s

Details Non-pressure-dependancy infrared absorption spectra recording, s Non-pressure-dependancy infrared absorption spectra recording, s

1990-01-05

1990-12-25

Hannaher, Constantine

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

250343, 356244, 356440, G01J 504, G01J 506, G01J 508

Patent

active

049805517

ABSTRACT:
A non-pressure-dependancy infrared absorption spectra recording, sample holder comprises a sample holder having an infrared light beam transmitting passage, two windows of infrared light transmitting material in the passage in face-to-face contact, with at least one window having an inner surface portion contoured to provide between the windows a sample space shaped to provide adjacent light beam paths which are different in length and a clamp for resiliently clamping the windows in the sample holder. A deformable sample is lightly compressed to fill the sample space, and an infrared light beam is passed through the sample. The adjacent light beam paths being of different lengths avoids optical interference fringes so that absorption spectra of the sample can be recorded.

REFERENCES:
patent: 3521963 (1970-07-01), Bader
patent: 4095105 (1978-06-01), Rosenthal
patent: 4286881 (1981-09-01), Janzen
patent: 4678913 (1987-07-01), Dodd, Jr. et al.
Pattison et al., A Sample Cell for Low Temperature Optical Absorption Stus of Frozen Aqueous Solutions, Rev. Sci. Instrum. vol. 45, No. 2, 2/74, pp. 304-305.

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