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Atmospheric and Oceanic Optics

2020 year, number 8

Universal analytical function for calculations of broadening of H2S absorption lines by noble gases

V.I. Starikov
Tomsk State University of Control Systems and Radioelectronics, Tomsk, Russia
Keywords: сероводород, уширение линий, столкновения, аналитическая модель, hudrogen sulphide, noble gas broadening, analytical model

Abstract

A universal function is suggested for calculation of the A-broadening coefficients γ of H2S absorption lines (A = He, Ne, Ar, Kr, and Xe). Only one parameter of this function depends on the broadening gas atom, while other parameters are common for all atoms. This parameter determines the ratio γ(А)/γ(А') for A and A' atoms. Parameters of the function are determined in the fitting procedure from the coefficients g measured and calculated for ν1, ν2, and ν3 vibrational bands of H2S molecules. The coefficients γ calculated are statistically compared with measurements. With the exception of some data for the ν1 and ν3 bands, the calculated and measured γ are in a good agreement for all collisional partners A.