Spectral Profiles for Atmospheric Absorption by Isolated Lines: A Comparison of Model Spectra with P- and R-Branch Lines of CO in N2 and Ar

Infrared HCN Lineshapes as a Test of Galatry and Speed-Dependent Voigt Profiles

“…To our knowledge, concerned molecules are so far C 2 H 2 (47-50), CO 2 (51), CH 3 F (52), and HF (53), but the most documented case is the infrared spectrum of CO (16,17,41,(54)(55)(56). In the low-pressure regime, the optical diffusion rate β evolves linearly with the gas pressure.…”

Line Broadening and the Temperature Exponent of the Fundamental Band in CO–N2 Mixtures

“…Our third profile is the speed-dependent hard collision introduced by Henry et al (26) (called H* in (26) and labeled HC v here). The choice of the third profile was predicated on the basis of computational convenience and realistic scaling with density, two aspects which were recently discussed by Berman et al (50,51). HC v is distinct from the speed-dependent hard-collision (SDHC) model of Rautian and Sobelman (44).…”

Self-broadened 12C16O line shapes in the v=2←0 band

“…These effects have been observed for CO line shapes in a number of high-resolution studies [13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30], motivated in part by the need to monitor this species accurately in the earth and planetary atmospheres. Most of the CO line shape measurements have been reported for the v ¼ 1 0 fundamental band in a variety of buffer gases using a tunable differencefrequency laser [13][14][15][16][17][18][19][20] or diode laser [21,22]. In addition, microwave data for pure rotational lines [23][24][25][26] as well as Fourier-transform [27][28][29] and diode laser [30] spectra of the overtones have exhibited non-Voigt profiles.…”