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


Brault JW, Brown LR, Chackerian C, Freedman R, Predoi-Cross A, Pine AS. Self-broadened 12C16O line shapes in the v=2←0 band. Journal of Molecular Spectroscopy. 2003;222:220-239.


Precise intensities, self-broadenings and shifts have been obtained for the 12C16O v ¼ 2 0 band from simultaneous fits of lownoise,high-resolution Fourier-transform spectra at pressures from 27 to 80 kPa (200–600 Torr). Observed line shapes exhibit deviationson the order of 1% from the conventional Voigt profile, primarily due to speed-dependent broadening and secondarily toline mixing. Dicke narrowing is reduced by over an order-of-magnitude from the diffusion value, presumably because of correlationsbetween velocity- and phase-changing collisions. 2003 Elsevier Inc. All rights reserved.