title: The role of asymptotic vibrational states in H3+.
abstract: Calculations are discussed which characterize all the vibrational bound states of the H3+ and D2H+ molecular ions using a realistic ab initio potential energy surface. Graphical analysis and calculation of rotational constants show that both ions support a series of atom-diatom-like long-range states: asymptotic vibrational states. The role of these states in the H3+ system and other molecules is discussed. The vibrational calculations are extended above dissociation where the resulting (Feshbach) resonances are shown to be too short-lived to be of importance for the H3+ photodissociation spectrum.
authors.affiliation: Department of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT, UK. j.tennyson@ucl.ac.uk
authors.forename: Jonathan
authors.initials: J
authors.lastname: Tennyson
authors.forename: Paolo
authors.initials: P
authors.lastname: Barletta
authors.forename: James J
authors.initials: JJ
authors.lastname: Munro
authors.forename: Bruno C
authors.initials: BC
authors.lastname: Silva