CO2 pressure broadening and shift coefficients for the 2-0 band of 12C16O
Vander Auwera, J.
Non-linear least squares
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Fourier transform absorption spectra of the 2-0 band of 12C16O mixed with CO2 have been recorded at total pressures from 156 to 1212hPa and at 4 different temperatures between 240K and 283K. CO2 pressure-induced line broadening and line shift coefficients, and the temperature dependence of the former have been measured including line mixing using a multi-spectrum non-linear least squares fitting technique. Different line shape models have been considered to take into account the Dicke narrowing or speed dependence effects. Measured line-shape parameters were compared with theoretical values, calculated for individual temperatures using a semi-empirical method and the Exponential Power Gap (EPG) law.
CitationHashemi, R.; Predoi-Cross, A.; Dudaryonok, A.S.; Lavrentieva, N.N.; Vandaele, A.C.; Vander Auwera, J. (2016). CO2 pressure broadening and shift coefficients for the 2-0 band of 12C16O. , Journal of Molecular Spectroscopy, Vol. 326, 60-72, DOI: 10.1016/j.jms.2016.02.014.