The permanent electric dipole moment of thorium sulfide, ThS.
Numerous rotational lines of the {18.26}1-X(1)Σ(+) band system of thorium sulfide, ThS, were recorded near 547.6 nm at a resolution of approximately 30 MHz. Measurements were made under field-free conditions, and in the presence of a static electric field. The field-free spectrum was analyzed to produce rotational and Λ-doubling parameters. The Stark shifts induced by the electric field were analyzed to determine permanent electric dipole moments, μ⃗el, of 4.58(10) D and 6.72(5) D for the X(1)Σ(+) (v = 0) and {18.26}1 states, respectively. The results are compared with the predictions of previous and new electronic structure calculations for ThS, and the properties of isovalent ThO.
Department of Chemistry and Biochemistry, Arizona State University, Tempe, Arizona 85287-1604, USA.
Anh
A
Le
Department of Chemistry, Emory University, Atlanta, Georgia 30322, USA.
Michael C
MC
Heaven
Department of Chemistry and Biochemistry, Arizona State University, Tempe, Arizona 85287-1604, USA.
Timothy C
TC
Steimle