Vol. 23, issue 07, article # 3

Abstract:

High resolution measurements of the N₂- and O₂-broadening and shifting coefficients for more than 100 H₂O absorption lines have been performed. The data have been obtained from the analysis of the absorption spectrum, recorded at the room temperature using the Fourier spectrometer IFS 125 HR in 8650-9020 cm^-1 spectral region with a spectral resolution of 0.01 cm^-1. It is shown that for more exact definition of the line shift coefficients it is necessary to take into account the contribution of all neighbouring lines with the intensity of two orders of magnitude less than the measured line. For each buffer gas a linear relationship of line shifts was measured.

Keywords:

lines shifts coefficient, Fourier spectrometer, water vapor