Calculations of self-broadening parameters of water vapor lines in a wide spectral region
V.I. Starikov
Tomsk State University of Control Systems and Radioelectronics, Tomsk, Russia
Keywords: water vapor, self-broadening, self-shift, broadening coefficient, shift coefficient
Abstract
The comparative analysis of experimental self-broadened line width γ and line shift δ coefficients is conducted. The 3641 coefficients γ and 2410 coefficients δ of water vapor molecule are analyzed for the 1000-14000 cm-1 spectral range. It is found that coefficients γ measured for the same lines in different works systematically differ, with a maximum difference of more than 20%. The shift coefficients δ for many strong lines are not even consistent in sign. Using the semi-classical method and the exact trajectory model the coefficients γ and δ have been calculated for 17 vibrational bands, and a sample of the calculated values of these coefficients is presented for 270 vibrational-rotational transitions.
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