Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5415503 | Journal of Molecular Spectroscopy | 2008 | 8 Pages |
Abstract
Using a high-resolution tunable diode laser photoacoustic spectrometer, self-, N2 and O2 pressure broadening coefficients for the first 11 transitions of 12C16O2 in the R branch of the (30012) â (00001) overtone band at the 6348 cmâ1 have been revisited at room temperature (â¼298 K). Air-broadening parameters have also been calculated from the N2 and O2 measurements. The dependence of the broadening on rotational quantum number m is discussed. The recorded lineshapes are fitted with standard Voigt line profiles in order to determine the collisional broadening coefficients of carbon dioxide transitions. The results are compared to our previous measurements and to the values reported in the HITRAN04 database and by other research group with a different spectroscopic technique.
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Authors
J.S. Li, K. Liu, W.J. Zhang, W.D. Chen, X.M. Gao,