Abstract

We present calculations of the temperature dependence of H2O pressure broadening parameters by H2O, CO2, N2, and O2. They were made for Q-lines with a theoretical model which provides a correct treatment of close collisions and has been widely tested. The results should be useful for Raman spectra calculations. A simple law is proposed to deduce halfwidths of P- and R-ines from the Q-line results. The accuracy of this law at high temperature is demonstrated. A simple analytical representation of a constant halfwidth approximation is also given.

© 1989 Optical Society of America

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