title: Collision energy dependence of the rotational-state-resolved cross section in the CH (v = 0, J, F(i)) + O(2) --> OH(A) + CO reaction.
abstract: A velocity variable rotational-state-selected CH (v = 0, J, F(i)) beam has been prepared by using an electric hexapole and applied to the CH (v = 0, J, F(i)) + O(2) --> OH(A) + CO reaction. The CH rotational-state-resolved reaction cross sections have been determined under the beam-cell condition at the collision energy range of 0.06-0.18 eV. The N = 2 rotational states are 2-3 times more reactive than the other states (N = 1, 3). In addition, we observed a noticeable difference in the collision energy dependence of the cross section between the CH rotational states. The reaction cross section for the N = 2 states has a gentle negative dependence on collision energy, while, the reaction cross section for the N = 1 states has a positive dependence on collision energy.
authors.affiliation: Department of Chemistry, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Ohoyama
authors.forename: Y
authors.initials: Y
authors.lastname: Nagamachi
authors.forename: K
authors.initials: K
authors.lastname: Yamakawa
authors.forename: T
authors.initials: T
authors.lastname: Kasai