title: O+OH-->O(2)+H: A key reaction for interstellar chemistry. New theoretical results and comparison with experiment.
abstract: We report extensive, fully quantum, time-independent (TID) calculations of cross sections at low collision energies and rate constants at low temperatures for the O+OH reaction, of key importance in the production of molecular oxygen in cold, dark, interstellar clouds and in the chemistry of the Earth's atmosphere. Our calculations are compared with TID calculations within the J-shifting approximation, with wave-packet calculations, and with quasiclassical trajectory calculations. The fully quantum TID calculations yield rate constants higher than those from the more approximate methods and are qualitatively consistent with a low-temperature extrapolation of earlier experimental values but not with the most recent experiments at the lowest temperatures.
authors.affiliation: LOMC, Universite du Havre, 25 Rue Philippe Lebon, BP 540, 76 058 Le Havre Cedex, France.
authors.forename: F
authors.initials: F
authors.lastname: Lique
authors.forename: M
authors.initials: M
authors.lastname: Jorfi
authors.forename: P
authors.initials: P
authors.lastname: Honvault
authors.forename: P
authors.initials: P
authors.lastname: Halvick
authors.forename: S Y
authors.initials: SY
authors.lastname: Lin
authors.forename: H
authors.initials: H
authors.lastname: Guo
authors.forename: D Q
authors.initials: DQ
authors.lastname: Xie
authors.forename: P J
authors.initials: PJ
authors.lastname: Dagdigian
authors.forename: J
authors.initials: J
authors.lastname: Kłos
authors.forename: M H
authors.initials: MH
authors.lastname: Alexander