Positions, Intensities, and Widths of Water-Vapor Lines between 475 and 692 cm^−1*

The absorption spectrum of water vapor has been studied quantitatively with a resolution of approximately 0.12 cm−1 between 475–692 cm−1. Several methods of extracting the intensity and line-width parameters from the measurements on 19 well-resolved lines are compared and discussed. The intensities show deviations from those calculated for a rigid asymmetric rotor, which are attributed to effects of centrifugal stretching. Half-widths are presented for H2O–H2O, H2O–N2, H2O–CO2, and H2O–He broadening at 80°C and for H2O-air at 24°C.