Temperature dependence of water vapor microwave line-broadening
V.I. Starikov
Tomsk State University of Control Systems and Radioelectronics, Tomsk, Russia
Keywords: broadening, H2O lines, temperature dependence, polar and monatomic gases
Abstract
Results of calculations of line widths of 18 water vapor microwave lines broadened by N2, O2, CO2, air, H2O, CO2, He, Ar, Kr, and Xe in the temperature range 30 ≤ T ≤ 400 K are presented. In the case of the broadening H2O lines by monatomic gases, these results strongly depend on the chosen interaction potential; for T ≤ 100 K, they depend on the model of trajectories of colliding molecules. The comparison with experimental data and other calculations is given. The results can be useful for spectral calculations required by atmospheric applications.
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