Monochromatic detection of plural rotational Raman spectra gener

Details Monochromatic detection of plural rotational Raman spectra gener Monochromatic detection of plural rotational Raman spectra gener

1975-04-21

1977-02-22

Corbin, John K.

Optics: measuring and testing

Oil testing

G01J 344

Patent

active

040089614

ABSTRACT:
A method and apparatus for spectroscopic gas analysis are provided. Plural beams of monochromatic radiation are directed through gaseous material. A tuning mechanism adjusts the frequency difference between the radiation beams to equal substantially an odd integral submultiple of the frequency difference between adjacent spectral components of the periodic spectrum for a preselected constituent of the gaseous material. Radiation scattered by the gaseous material is received by a filtering mechanism adapted to transmit selectively a detectable signal composed of a single superimposed spectral component of the spectrum. The signal is received by a detecting means which indicates the intensity thereof.

REFERENCES:
patent: 3723007 (1973-03-01), Leonard
patent: 3768908 (1973-10-01), Zaromb
patent: 3853404 (1974-12-01), Barrett

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