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Absorption Line Broadening in the Infrared

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Abstract

The effects of various gases on the absorption bands of nitrous oxide, carbon monoxide, methane, carbon dioxide, and water vapor have been investigated. Self-broadening effects for each of these gases have been compared with the effects of nitrogen in broadening the rotational lines within various vibration-rotation bands; the results can be expressed in terms of self-broadening coefficients. The effects produced by various foreign gases have also been compared with those of nitrogen; the results are expressed in terms of relative foreign broadening coefficients and relative collision diameters. The foreign gases studied include the nonabsorbing gases helium, oxygen, argon, hydrogen, and nitrogen and also carbon monoxide, carbon dioxide, and methane in spectral regions where there are no overlapping bands.

© 1962 Optical Society of America

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