Abstract
The broadening and shift coefficients of H2O absorption lines are compared for Ar, He, H2, and N2 buffer gases. The broadening and shift coefficients were derived from the analysis of the absorption spectra recorded with an FTIR spectrometer in the spectral region 8650–9020 cm−1 with a spectral resolution of 0.01 cm–1. Using two model line profiles (Voigt and speed-dependent Voigt profiles) the parameters of the H2O absorption lines were calculated. It is shown that the speed-dependent Voigt profile provides better agreement with experimental data.
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