title: Interacting He and Ar atoms: Revised theoretical interaction potential, dipole moment, and collision-induced absorption spectra.
abstract: Coupled cluster quantum chemical calculations of the potential energy surface and the induced dipole surface are reported for the He-Ar van der Waals collisional complex. Spectroscopic parameters are derived from global analytical fits while an accurate value for the long-range dipole coefficient D7 is obtained by perturbation methods. Collision-induced absorption spectra are computed quantum mechanically and compared with existing measurements.
authors.affiliation: University Kaiserslautern, FB Chemie, Kaiserslautern, Germany.
authors.forename: Wilfried
authors.initials: W
authors.lastname: Meyer
authors.affiliation: Physics Department, University of Texas, Austin, Texas 78712-0264, USA.
authors.forename: Lothar
authors.initials: L
authors.lastname: Frommhold