PHOTO-ACOUSTIC MEASUREMENTS OF WATER VAPOR ABSORPTION COEFFICIENT IN UV SPECTRAL REGION

Data on the absorption coefficient of H₂O in binary mixture with N₂ in UV region of spectra are presented. With the use of the high sensitivity photoacoustic spectrometer, the following values of the absorption coefficient were found: 2.3×10^-9cm^-1·Pa^-1(\lambda = 255 nm), 0.9×10^-9 cm^-1·Pa^-1(\lambda = 271 nm), and 1.6×10^-9cm^-1 ·Pa^-1(\lambda = 289 nm).