Pressure broadening of CO and OCS spectral lines

Details Pressure broadening of CO and OCS spectral lines Pressure broadening of CO and OCS spectral lines

Sep 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988jqsrt..40..205b&link_type=abstract

Journal of Quantitative Spectroscopy and Radiative Transfer (ISSN 0022-4073), vol. 40, Sept. 1988, p. 205-220.

Computer Science

20

Carbon Monoxide, Carbonyl Compounds, Line Spectra, Molecular Spectra, Pressure Broadening, Spectral Line Width, Carbon Dioxide, Molecular Collisions, Oxygen, Sulfides

Scientific paper

This paper reviews the principal features of two semiclassical impact theories of collisional line-broadening, Anderson (1949) and Tsao-Curnutte (1962) theory and the more recent theory of Robert and Bonamy (1979). These models are applied to the calculation of self-, N2-, O2- and CO2-broadened line widths of CO and of self-, O2-, and N2-broadened linewidths of OCS. In addition to the electrostatic interactions, two anisotropic potentials are considered: a simple one governing dispersion interaction and a more elaborate atom-atom interaction potential. Selected experimental values for broadening coefficients of CO and OCS at room temperature and around 200 K are compared with the theoretical values. Conclusions on the two theories and the intermolecular potentials used are drawn from this comparison.

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