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CO2 pressure broadening and shift coefficients for the 2–0 band of 12C16O

par Hashemi, Robab;Predoi-Cross, Adriana;Dudaryonok, Anna A.S.;Lavrentieva, Nina N.N.;Vandaele, Ann Carine ;Vander Auwera, Jean
Référence Journal of Molecular Spectroscopy, 326, page (60-72)
Publication Publié, 2016-08

Article révisé par les pairs

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Résumé :

Fourier transform absorption spectra of the 2–0 band of 12C16O mixed with CO2 have been recorded at total pressures from 156 to 1212 hPa and at 4 different temperatures between 240 K and 283 K. 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.