کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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5429649 | 1397363 | 2010 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Air pressure broadening and shifting of high-J lines of (00011) â (00001) band of 12C16O2 Air pressure broadening and shifting of high-J lines of (00011) â (00001) band of 12C16O2](/preview/png/5429649.png)
The absorption spectra of carbon dioxide (isotope 626, natural abundance in air, ambient temperature) have been studied at total pressures 68-570Â Torr with spectral resolution 0.003-0.005Â cmâ1. The spectra were measured in the spectral domain of 2273-2393Â cmâ1 by FTIR spectrometer Bruker IFS 125 HR equipped with White-type multipass cell (6.4-41.6Â m) and with a cell having 10Â cm optical path length. Pressure broadening and shift coefficients were obtained from a series of spectra by means of a nonlinear least-squares spectral fitting technique for the lines of the (00011)â(00001) band with rotational quantum number up to J=82. For fitting of the individual line shapes, we used the Voigt profile with pre-calculated Doppler broadening parameter. The experimental pressure broadening and shift coefficients are compared with the values available in spectroscopic databases HITRAN 2008 and Carbon Dioxide Spectroscopic Databank (CDSD-296) and with other experimental values reported in the literature.
Journal: Journal of Quantitative Spectroscopy and Radiative Transfer - Volume 111, Issue 15, October 2010, Pages 2315-2320