A Molecular Beam Electric Resonance Study of the Hyperfine Λ Doubling Spectrum of OH, OD, SH, and SD

Abstract

The molecular beam electric resonance method was employed to obtain a complete set of hyperfine Λ doubling transitions of the free radicals OH, OD, SH, and SD. The observed spectra could be explained very well by the degenerate perturbation theory adapted to the 2 Π state. The experimental results include fine and hyperfine coupling constants, the electric dipole moments could be explained very well by the degenerate perturbation theory adapted to the 2 Π state. The constants agree well with ab initio calculations.