title: Rotational excitation of the interstellar NH2radical by H2.
abstract: We present quantum close-coupling calculations for the rotational excitation of the interstellar amidogen radical NH2due to collisions with H2molecules. The calculations are based on a recent, high-accuracy full-dimensional NH4potential energy surface adapted for rigid-rotor scattering calculations. The collisional cross section calculations are performed for all transitions among the first 15 energy levels of both ortho- and para-NH2and for total energies up to 1500 cm-1. Both para- and ortho-H2colliding partners are considered. The cross sections for collision with para- and ortho-H2are found to differ significantly, the magnitude of the ortho-H2ones being dominant. No strong propensity rules are observed but transitions with Δkc=0 are slightly favored.
authors.affiliation: LOMC - UMR 6294, CNRS-Université du Havre, 25 rue Philippe Lebon, BP 1123, 76 063 Le Havre cedex, France.
authors.forename: Nezha
authors.identifier: 0000000168315226
authors.initials: N
authors.lastname: Bouhafs
authors.affiliation: LOMC - UMR 6294, CNRS-Université du Havre, 25 rue Philippe Lebon, BP 1123, 76 063 Le Havre cedex, France.
authors.forename: François
authors.identifier: 0000000206642536
authors.initials: F
authors.lastname: Lique
authors.affiliation: UJF-Grenoble 1/CNRS, Institut de Planétologie et d'Astrophysique de Grenoble (IPAG) UMR 5274, Grenoble F-38041, France.
authors.forename: Alexandre
authors.initials: A
authors.lastname: Faure
authors.affiliation: UJF-Grenoble 1/CNRS, Institut de Planétologie et d'Astrophysique de Grenoble (IPAG) UMR 5274, Grenoble F-38041, France.
authors.forename: Aurore
authors.initials: A
authors.lastname: Bacmann
authors.affiliation: Department of Chemistry and Chemical Biology, University of New Mexico, Albuquerque, New Mexico 87131, USA.
authors.forename: Jun
authors.initials: J
authors.lastname: Li
authors.affiliation: Department of Chemistry and Chemical Biology, University of New Mexico, Albuquerque, New Mexico 87131, USA.
authors.forename: Hua
authors.identifier: 000000019901053X
authors.initials: H
authors.lastname: Guo