Infrared absorption by gas mixtures in the 300-850 K temperature range. I - 4.3 micron and 2.7 micron CO2 spectra

Details Infrared absorption by gas mixtures in the 300-850 K temperature range. I - 4.3 micron and 2.7 micron CO2 spectra Infrared absorption by gas mixtures in the 300-850 K temperature range. I - 4.3 micron and 2.7 micron CO2 spectra

May 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986jqsrt..35..337l&link_type=abstract

Journal of Quantitative Spectroscopy and Radiative Transfer (ISSN 0022-4073), vol. 35, May 1986, p. 337-343.

Computer Science

15

Absorption Spectra, Carbon Dioxide, Gas Mixtures, Infrared Absorption, Infrared Spectra, Nitrogen, Temperature Dependence, Transmissivity, Water Vapor

Scientific paper

Spectra have been measured with 1 percent accuracy in a vacuum-tight cell in the 0.2-1 atm pressure range. They are compared with a line-by-line calculation using Rothman's (1978) data on line-positions and band-strengths, a T exp -0.8 dependence of line-widths (gamma), and recent values for gamma(CO2-CO2) exp S and gamma(CO2-N2) exp s at STP. The calculations agree with CO2 and CO2-N2 spectra in the 4.3 micron band, except between 2200 and 2300/cm; hot-band intensities are overestimated. The same conclusion holds for CO2-H2O mixtures for the mean value gamma(CO2-H2O) exp S = 0.11/cm. Calculations also agree with 2.7 micron-band spectra for intensities that are 20 percent lower than Rothman's.

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