title: Comparative experimental and theoretical study of the rotational excitation of CO by collision with ortho- and para-D2molecules.
abstract: A joint crossed beam and quantum mechanical investigation of the rotationally inelastic collisions of CO with ortho- and para-D2molecules is reported. A new 4D potential energy surface (PES) averaged over the ground vibrational states of D2and CO is used to calculate the rovibrational bound states of the ortho-D2-CO complexes. Close coupling calculations are then performed in the rigid rotor approximation for ortho- and para-D2colliding with CO for the experimentally investigated transition of CO (j = 0 → 1) and for collision energies ranging from 0.1 to 25 cm-1. The agreement between theory and experiment is found to be very good for both the bound state energies of the ortho-D2-CO complexes and for the inelastic scattering cross-sections showing that the free rotation of two rigid rotors is a very good model of the D2-CO system in this low collision energy domain.
authors.affiliation: Univ. Bordeaux, ISM, UMR 5255, F-33400 Talence, France. thierry.stoecklin@u-bordeaux.fr and CNRS, ISM, UMR 5255, F-33400 Talence, France.
authors.forename: T
authors.initials: T
authors.lastname: Stoecklin
authors.affiliation: Univ. Grenoble Alpes, CNRS, IPAG, F-38000 Grenoble, France.
authors.forename: A
authors.initials: A
authors.lastname: Faure
authors.affiliation: Faculty of Chemistry, Nicolaus Copernicus University in Torun, Gagarina 7, PL-87-100 Torun, Poland.
authors.forename: P
authors.initials: P
authors.lastname: Jankowski
authors.affiliation: Univ. Bordeaux, ISM, UMR 5255, F-33400 Talence, France. thierry.stoecklin@u-bordeaux.fr and CNRS, ISM, UMR 5255, F-33400 Talence, France.
authors.forename: S
authors.initials: S
authors.lastname: Chefdeville
authors.affiliation: Univ. Bordeaux, ISM, UMR 5255, F-33400 Talence, France. thierry.stoecklin@u-bordeaux.fr and CNRS, ISM, UMR 5255, F-33400 Talence, France.
authors.forename: A
authors.initials: A
authors.lastname: Bergeat
authors.affiliation: Univ. Bordeaux, ISM, UMR 5255, F-33400 Talence, France. thierry.stoecklin@u-bordeaux.fr and CNRS, ISM, UMR 5255, F-33400 Talence, France.
authors.forename: C
authors.identifier: http://orcid.org/0000-0002-4356-0484
authors.initials: C
authors.lastname: Naulin
authors.affiliation: Univ. Bordeaux, ISM, UMR 5255, F-33400 Talence, France. thierry.stoecklin@u-bordeaux.fr and CNRS, ISM, UMR 5255, F-33400 Talence, France.
authors.forename: S B
authors.initials: SB
authors.lastname: Morales
authors.affiliation: Univ. Bordeaux, ISM, UMR 5255, F-33400 Talence, France. thierry.stoecklin@u-bordeaux.fr and CNRS, ISM, UMR 5255, F-33400 Talence, France.
authors.forename: M
authors.initials: M
authors.lastname: Costes