Optika Atmosfery i Okeana Journal

Vol. 36, issue 11, article # 1

Bykov A. D., Voronin B. A. Isotopic shifts of vibrational-rotational lines of SO₂. // Optika Atmosfery i Okeana. 2023. V. 36. No. 11. P. 869–873. DOI: 10.15372/AOO20231101 [in Russian].
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Abstract:

Simple isotopic relations relating the energy levels of the isotopologues ³²S¹⁶O₂, ³³S¹⁶O₂, and ³⁴S¹⁶O₂ with the levels of other isotopic variants are applied to calculations of vibrational-rotational energy leveles. To estimate the accuracy of the isotopic ratio, we calculated and compared with the measured line centers of the microwave spectrum of the ³⁶S¹⁶O₂ isotopologue. Comparison showed their quite satisfactory agreement at a level of 10^-3 cm^-1. Vibrational-rotational energy levels of sulfur dioxide isotopologues ^XS¹⁶O₂, X = 35–38, up to J = 9 for five lower vibrational states are presented.

Keywords:

isotopic effect, isotopic shift, sulfur dioxide, vibrational-rotational spectra

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