title: Direct-potential-fit analysis of new infrared and UV/visible A 1Sigma+-X 1Sigma+ emission spectra of AgH and AgD.
abstract: New high-resolution infrared and UV/visible spectra of (107)AgH, (109)AgH, (107)AgD, and (109)AgD have been recorded with a Fourier transform spectrometer. The new line positions are combined with published microwave and older electronic A (1)Sigma(+)-X (1)Sigma(+) data and used, first in a decoupled analysis of the X state alone, and then in a global multi-isotopologue analysis which yields comprehensive descriptions of both the X (1)Sigma(+) and A (1)Sigma(+) states of all four isotopologues of AgH. While the A state was long believed to be heavily perturbed, it is shown that its irregular spectrum merely reflects an unusual potential function shape. A direct fit of all data to appropriate radial Hamiltonians yields analytic potential-energy functions and Born-Oppenheimer breakdown radial functions for the ground X (1)Sigma(+) and A (1)Sigma(+) states.
authors.affiliation: Department of Chemistry, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada. leroy@uwaterloo.ca
authors.forename: Robert J
authors.initials: RJ
authors.lastname: Le Roy
authors.forename: Dominique R T
authors.initials: DR
authors.lastname: Appadoo
authors.forename: Kevin
authors.initials: K
authors.lastname: Anderson
authors.forename: Alireza
authors.initials: A
authors.lastname: Shayesteh
authors.forename: Iouli E
authors.initials: IE
authors.lastname: Gordon
authors.forename: Peter F
authors.initials: PF
authors.lastname: Bernath