Vol. 39, issue 03, article # 1
Starikov V. I. Calculations of self-broadening parameters of water vapor lines in a wide spectral region. // Optika Atmosfery i Okeana. 2026. V. 39. No. 03. P. 185–191. DOI: 10.15372/AOO20260301 [in Russian].Copy the reference to clipboard
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 g 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 d have been calculated for 17 vibrational bands, and a sample of the calculated values of these coefficients is presented for 270 vibrational-rotational transitions.
Keywords:
water vapor, self-broadening, self-shift, broadening coefficient, shift coefficient
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