Accurate asymptotic ground state potential curves of Cs2 from two-colour photoassociation
Laboratoire Aimé Cotton, CNRS, bâtiment 505, Campus d'Orsay, 91405 Orsay Cedex, France
Corresponding author: a firstname.lastname@example.org
Revised: 4 November 2003
Published online: 20 January 2004
Over 100 high lying level energies of the lowest electronic states and in Cs2 are determined in a Λ-like scheme two-colour photoassociation spectroscopy. The results are analyzed with a coupled channel model using an asymptotic approach, based on nodal lines. From this analysis we determine the long range dispersion coefficient C6 to 6846.2±15.6 a.u. We also obtain the first experimental determination of the amplitude of the asymptotic exchange term.
PACS: 34.20.-b – Interatomic and intermolecular potentials and forces, potential energy surfaces for collisions / 32.80.Pj – Optical cooling of atoms; trapping / 03.65.Ge – Solutions of wave equations: bound states
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2004