language: en

Pure Rotational Spectra of CS

V. Ahrens and G, Winnewisser
1. PhysikaUsches Institut der Universität zu Köln,
D-50937 Cologne
Z. Naturforsch. 54 a, 131-136 (1999);

[received November 21, 1998]

The pure rotational spectra of CS and its isotopomers '^C^^S, '^C^'S, '^C^^S, ^^C"S, '^C^^S including the very rare isotopomer ^^C^^S were observed. The rotational spectra include ground and vibrationally excited transitions up to v = 16. The new measurements have been performed with the Cologne terahertz spectrometer covering the frequency region from 259 to 1075 GHz. These newly observed rotational transitions together with earlier data were fitted to a Dunhamtype Hamiltonian. The obtained isotopically invariant parameters include vibrational and rotational expansion coefficients.

1. Introduction