Abstract
The first observation of the far-infrared laser magnetic resonance spectrum of the HS 2 radical in its ground 2 A″ state is reported. The radical was produced in the gas-phase reaction between fluorine atoms and hydrogen sulfide, H 2S. Spectra associated with several different rotational transitions (with values of N up to 30 and K a up to 4) have been identified and analyzed to give an improved set of molecular parameters. In particular, the value for the centrifugal distortion constant Δ K of 24.339(10) MHz is significantly different from the value assumed by S. Yamamoto and S. Saito ( Can. J. Phys. 72, 954 (1994)) in their earlier millimeter-wave study, Zeeman parameters have also been determined.
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