An analysis of the high-resolution spectrum of the weak v1+v2+v3 absorption band of the SO2 molecule

The v 1 +v 2 +v 3 absorption band of the SO2 molecule is recorded and analyzed for the first time on the basis of the specially developed procedure for assignment of superweak high-resolution spectra. The spectral line positions obtained from an analysis of the experimental spectrum are used for the determination of rotational and centrifugal distortion parameters of the (111) state