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Atmospheric and Oceanic Optics

2020 year, number 4

Databank of spectral line parameters of the H2S molecule

A.A. Lukashevskaya, V.I. Perevalov
V.E. Zuev Institute of Atmospheric Optics of Siberian Branch of the Russian Academy of Science, Tomsk, Russia
Keywords: сероводород, HS, спектры высокого разрешения, параметры спектральных линий, глобальное моделирование, эффективный гамильтониан, оператор эффективного дипольного момента, банк параметров спектральных линий, hydrogen sulfide, high resolution spectra, spectral line parameters, global modeling, effective Hamiltonian, effective dipole moment operator, bank of spectral line parameters

Abstract

The bank of spectral line parameters of the principal isotopologue of the hydrogen sulfide molecule (H232S) is presented. The databank is based on the global simulation of the line positions and intensities of this molecule performed within the method of effective operators. The parameters of the global effective Hamiltonian and of the effective dipole moment operator were obtained by their fittings to, respectively, the observed line positions and intensities, taken from the literature. The databank covers the 552.76- 8424.32 cm-1 spectral range and contains the calculated values of the following spectral line parameters: line position, line intensity, energies of lower and upper states, Einstein coefficient for the spontaneous emission, and the statistical weights of the lower and upper states. The intensity cutoff was chosen equal to 10-28 cm/molecule at T = 296 K. In total, the databank contains about 88 thousand lines. This databank is deployed on the website of V.E. Zuev Institute of Atmospheric Optics SB RAS (ftp://ftp.iao.ru/pub/H2S/).