title: Universal reduced potential function for diatomic systems.
abstract: The potential energy functions of 200 diatomic systems, with dissociation energies De ranging from few eV to hundreds of mueV, are well described by a new three-parameter potential energy function. Identification of the evaluated values of a dimensionless quantity, xin=L2/Ln [Ln=(n!De/fn)1/n, a scaled length parameter, and fn, the nth force constant evaluated at the equilibrium internuclear distance Re], is proposed as a reliable criterion to search for the universal scaling features of potentials and spectroscopic constants for bound diatomic systems. Our study suggests a useful approach to predicting future molecular spectroscopic constants.
authors.affiliation: Department of Physics and Key Laboratory of Ferroelectric Materials and Devices of Hubei Province, Hubei University, Wuhan 430062, China.
authors.forename: Rui-Hua
authors.initials: RH
authors.lastname: Xie
authors.forename: Paul S
authors.initials: PS
authors.lastname: Hsu