Spectral mosaics: Composite absorption cross sections of air-broadened tetrafluoromethane with comparable uncertainty in the measured intensity over orders of magnitude

Abstract

We have obtained low-uncertainty absorption cross sections, together with explicit uncertainties for every wavenumber, for mixtures of tetrafluoromethane (CF4) with air at 296 K. The integrated intensities in the region of the two fundamental bands ν3 and ν4 as well as four combination bands, namely ν1 + ν4, ν2 + ν4, ν3 + ν4, and ν2 + ν3, were also evaluated. The expanded uncertainties are below 1.3 % for the fundamental and below 3 % for the combination bands. An intensity estimation for the forbidden ν1 band is also obtained. Spectral data is available online: doi: 10.7795/720.20230920.