On the nitrogen-induced far-infrared absorption spectra

Details On the nitrogen-induced far-infrared absorption spectra On the nitrogen-induced far-infrared absorption spectra

Jan 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987cajph..65...90d&link_type=abstract

Canadian Journal of Physics (ISSN 0008-4204), vol. 65, Jan. 1987, p. 90-93. NASA-supported research.

Physics

4

Far Infrared Radiation, Infrared Spectra, Lennard-Jones Potential, Molecular Collisions, Nitrogen, Planetary Atmospheres, Absorption Spectra, Argon, Gas Mixtures, Line Shape, Low Temperature, Room Temperature

Scientific paper

The rototranslational absorption spectrum of gaseous N2 is analyzed, considering quadrupolar and hexadecapolar induction mechanisms. The available experimental data are accounted for by using a line-shape analysis in which empirical profiles describe the single-line translational profiles. Thus, a simple procedure is derived that allows the prediction of the N2 spectrum at any temperature. On the basis of the results obtained for the pure gas, a procedure to compute the far-infrared spectrum of the N2-Ar gaseous mixture is also proposed. The good agreement between computed and experimental N2-Ar data indicates that it is possible to predict the far-infrared absorption induced by N2 on the isotropic polarizability of any interacting partner.

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