Calculation of Pressure-Broadened Linewidths of SO2 and NO2

Abstract

Self‐broadened and foreign‐gas (N₂ and O₂) broadened linewidths of sulfur dioxide and nitrogen dioxide have been calculated using the Anderson‐Tsao‐Curnutte theory of line broadening. Computed values of linewidths are in good agreement with all the available experimental results and reported theoretical calculations by Murphy and Boggs on four self‐broadened and one nitrogen‐broadened line based upon the theory developed by them. Air‐broadened linewidths have been calculated for SO₂ at 200, 250, and 300°K. These results should be useful in predicting theoretical spectra of SO₂ under atmospheric conditions. Such spectra are important in spectroscopic techniques for monitoring SO₂.