High resolution study of the ОЅ2 band of sulfur dioxide
A.G. Ziatkova1, V.A. Zamotaeva1, I.A. Konov2
1Tomsk State University of Control Systems and Radioelectronics, 634050, 40 Lenina Prospect, Tomsk, Russia
2National Research Tomsk Polytechnic University, 30, Lenin Avenue, Tomsk, 634050, Russia
Keywords: диоксид серы, спектр высокого разрешения, фундаментальная полоса, sulfur dioxide, high resolution spectrum, fundamental band
Abstract
The ν2 band is analyzed on the basis of the combination difference method. The high resolution FTIR spectrum of the SO2 molecule in the region 400-700 cm-1 is used for the analysis. More than 4500 lines with the maximum values of the quantum numbers J and Ka equal to 96 and 25, respectively, are interpreted. On this basis, 1294 vibrational-rotational energy levels of the state (010) are determined. As a result of solution of the inverse spectroscopic problem with these levels, 32 effective Hamiltonian parameters are obtained, which allow us to reproduce the initial experimental data with the accuracy drms = 1.9 ( 10-4 сm-1.
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