Air-broadened halfwidth and pressure shift coefficients of (CO2)-C-12-O-16 bands: 4750-7000 cm(-1)

作者：Toth R A^*; Miller C E; Devi V Malathy; Benner D C; Brown L R

来源：Journal of Molecular Spectroscopy, 2007, 246(2): 133-157.

DOI：10.1016/j.jms.2007.09.005

• carbon dioxide
• CO2
• air-broadening
• near infrared
• lorentz widths
• pressure shift

Previously we obtained self-broadened halfwidth and self-induced shift coefficients at room temperature for 15 near infrared CO2 bands between 4750 and 7000 cm(-1) [R.A. Toth, L.R. Brown, C.E. Miller, V.M. Devi, D.C. Benner, J. Mol. Spectrosc., 239 (2006) 243-271]. The present study expands our work on the near infrared line parameters Of CO2 to include air broadening coefficients. Here we report nearly 400 air-broadened half width and air-induced pressure shift coefficients spanning I I different CO2 vibrational bands in the 4750-7000 cm(-1) region. Retrievals have been performed using Voigt line profiles over three distinct spectral intervals: (a) 47505200 cm(-1), covering the 20011 <- 00001, 20012 <- 00001, and 20013 <- 00001 Fermi Triad and three associated hot bands 21111 <- 0 110 1, 21112 <- 0 110 1, 21113 <- 01101; (b) 6100-7000 cm(-1), covering the 30011 <- 00001, 30012 <- 00001, 30013 <- 00001 and 30014 <- 00001 Fermi Tetrad; (c) near 6950 cm(-1) for the 00031 <- 0000 1 overtone band. The air-broadened halfwidth and air-induced pressure shift coefficients have been modeled with empirical expressions and compared to other measurements available in the literature.

• 出版日期2007-12