The optical Stark effect in the (0, 0) A2Π-X2Σ+ band systems of a yttrium monosulfide, YS, supersonic molecular beam sample have been analyzed to produce the magnitude of the permanent electric dipole moments, |μ|, for the A2Π3/2, and A2Π1/2 states of 5.9(2), and 6.8(1) D, respectively. Small splittings in the field free A2Π3/2-X2Σ+ and A2Π1/2-X2Σ+ spectra were analyzed to produce the magnetic hyperfine spectroscopic parameters a = -36(6), c = 111(7), and d = -107(6) MHz for the A2Π state. Transition frequencies of the low rotational lines in the (0, 0) A2Πr-X2Σ+ band system were measured and analyzed to produce the first complete set of the structure parameters for the A2Πr state. A comparison with YO and other isovalent molecules is made.
- Magnetic hyperfine spectroscopic parameters
- Optical Stark effect
- Permanent electric dipole moments
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
- Physical and Theoretical Chemistry