title: A molecular-beam optical Stark study of lines in the (1,0) band of the F4delta(7/2)-X4delta(7/2) transition of iron monohydride, FeH.
abstract: A supersonic molecular beam of iron monohydride, FeH, has been generated using a laser ablation/chemical reaction scheme and probed at near-natural linewidth resolution by optical Stark spectroscopy utilizing laser-induced fluorescence detection. The observed Stark splitting in Q(3.5) and R(3.5) lines of the F4delta(7/2) <-- X4delta(7/2) (1,0) transition were analyzed to determine values for the magnitudes of the permanent electric dipole moments, absolute value(mu), which were found to be 2.63(3) and 1.29(3) D for the X4delta (v = 0) and F4delta (v = 1) states, respectively. A comparison with ab initio theoretical predictions is made. The lambda doubling in the low-J levels of the F4delta(7/2) (v = 1) state is also modeled.
authors.affiliation: Department of Chemistry and Biochemistry, Arizona State University, Tempe, Arizona 85287-1604, USA. Tsteimle@ASU.edu
authors.forename: Timothy C
authors.initials: TC
authors.lastname: Steimle
authors.forename: Jinhai
authors.initials: J
authors.lastname: Chen
authors.forename: Jeremy J
authors.initials: JJ
authors.lastname: Harrison
authors.forename: John M
authors.initials: JM
authors.lastname: Brown