Measurements of line intensities and determination of transition moment parameters from experimental data for the ν1 and ν3 bands of D2S |
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Authors: | J Lamouroux L Rgalia-Jarlot VlG Tyuterev X Thomas P Von der Heyden SA Tashkun Yu Borkov |
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Institution: | aG. S. M. A. UMR CNRS 6089, University of Reims, UFR Sciences, Moulin de la Housse, B.P. 1039, 51687 Reims Cedex 2, France;bInstitute of Atmospheric Optics, RAN, 1, av. Akademicheskii, 634055 Tomsk, Russia |
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Abstract: | First measurements of line intensities for ν1 and ν3 bands of D232S are reported. About 300 intensities of D232S vibration–rotation lines were obtained from experimental high-resolution spectra recorded in the 1810–2051 cm−1 region with the Fourier Transform Spectrometer built in Reims. Empirical values of transition moment parameters for ν1 and ν3 bands of D232S were determined for the first time using a least-square fit to the observed intensities. Experimental D232S intensities were compared with recent global variational predictions Vl.G. Tyuterev, L. Régalia-Jarlot, D.W. Schwenke, S.A. Tashkun, Y.G. Borkov, C. R. Phys. 5 (2004) 189–199] computed from isotopically invariant potential and dipole moment functions of the hydrogen sulphide molecule. Average discrepancy between these calculations and our observed data was 0.03 cm−1 for line positions of this spectral range. The discrepancy between these calculations and our measurements for the sum of line intensities was 5.5% and 3.5% for the ν1 and ν3 bands, correspondingly. |
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Keywords: | D2S Intensities Isotopic effect Intensity anomalies Transition moment Dipole moment function |
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