Half-width temperature dependence of nitrogen broadened lines in the v2 band of H2O

Forty-seven N-2 broadened water vapor line-widths have been measured in the 1845-2140 cm(-1) spectral range with a Fourier Transform spectrometer in the 258-330 K temperature range at a spectral resolution of 0.005 cm(-1) for the lines with upper state rotational quantum number up to 16. The measured exponents of the temperature dependence of the width exhibit a large range of values from 1.60 to -0.86. Theoretical calculations were made using a semi-empirical technique based on the Anderson theory. The calculated broadening coefficients as well as the temperature, exponents for the half-width agree satisfactory with measured values. (C) 2004 Elsevier Inc. All rights reserved.