Collisional Broadening of Vibrational-Rotational CO2 Lines by Buffer Gases

Temperature‐Dependent Line‐Broadening Effects in CO2 Caused by Ar

“…00001 band. Beyond the standard power-law (PL) [24] and the multiple PL [53] models, a new functional form, called here the generalized PL (GPL) model, was utilized to describe the temperature dependence of the broadening values of lines in the 00011 ! 00001 and 01101 !…”

“…Beyond the standard power‐law (PL) [24] and the multiple PL [53] models, a new functional form, called here the generalized PL (GPL) model, was utilized to describe the temperature dependence of the broadening values of lines in the 00011←00001 and 01101←00001 bands. Using at most four parameters in the fits, the GPL model delivers the best representation for these broadening coefficients as a function of temperature.…”

“…( 17) can be viewed as an extension of the standard PL form, g V ð Þ = cV n . [24] The T ref parameter is set to 296 K in this study.…”

“…00001 band using dual frequency comb absorption and phase spectroscopy up to 25 bar and 1000 K, while Chen et al [18] applied tunable diode laser absorption spectroscopy for transitions with high J values, where J is the quantum number characterizing the overall rotation of the molecule. Furthermore, Arshinov and co-workers [22][23][24] utilized a frequency-stabilized CO 2 laser to probe the unsaturated absorption coefficients of lines in the 10001 ! 00011 band in pure CO 2 , as well as in binary mixtures of CO 2 with various gases, including Ar, in the temperature range of 296-700 K.…”

“…The MPL scheme of Eq. (17) can be viewed as an extension of the standard PL form, $${\gamma \left(\Theta \right)}$$ =$${{c\Theta }^{n}}$$ [24] . The $${{T}^{{\rm r}{\rm e}{\rm f}}}$$ parameter is set to 296 K in this study.…”