title: Selected-ion flow tube temperature-dependent measurements for the reactions of O₂⁺ with N atoms and N₂⁺ with O atoms.
abstract: The temperature variation of rate constants has been measured for the gas phase reactions of the oxycation O2(+) with N atoms and of N2(+) with O atoms from 120 to 400 K using a variable temperature-selected ion flow tube. Measured room temperature rate constants, 0.75 × 10(-10) cm(3) s(-1) (±30%) for O2(+) with N and 1.4 × 10(-10) cm(3) s(-1) (±30%) for N2(+) with O, are in agreement with previously reported values. A temperature dependence of T(-0.7(±0.3)) is observed for the O2(+) + N reaction; however, the N2(+) + O reaction is found to be independent of temperature. Calculations at varying levels of theory were used in tandem with experiments to evaluate likely pathways in potential energy surfaces for the reactions of concern.
authors.affiliation: Space Vehicles Directorate, Air Force Research Laboratory, Kirtland AFB, New Mexico 87117-5776, USA.
authors.forename: Oscar
authors.initials: O
authors.lastname: Martinez
authors.affiliation: Space Vehicles Directorate, Air Force Research Laboratory, Kirtland AFB, New Mexico 87117-5776, USA.
authors.forename: Jenny C
authors.initials: JC
authors.lastname: Sanchez
authors.affiliation: Space Vehicles Directorate, Air Force Research Laboratory, Kirtland AFB, New Mexico 87117-5776, USA.
authors.forename: Shaun G
authors.initials: SG
authors.lastname: Ard
authors.affiliation: Department of Chemistry and Chemical Biology, University of New Mexico, Albuquerque, New Mexico 87131, USA.
authors.forename: Anyang
authors.initials: A
authors.lastname: Li
authors.affiliation: Space Vehicles Directorate, Air Force Research Laboratory, Kirtland AFB, New Mexico 87117-5776, USA.
authors.forename: Joshua J
authors.initials: JJ
authors.lastname: Melko
authors.affiliation: Space Vehicles Directorate, Air Force Research Laboratory, Kirtland AFB, New Mexico 87117-5776, USA.
authors.forename: Nicholas S
authors.initials: NS
authors.lastname: Shuman
authors.affiliation: Department of Chemistry and Chemical Biology, University of New Mexico, Albuquerque, New Mexico 87131, USA.
authors.forename: Hua
authors.initials: H
authors.lastname: Guo
authors.affiliation: Space Vehicles Directorate, Air Force Research Laboratory, Kirtland AFB, New Mexico 87117-5776, USA.
authors.forename: Albert A
authors.initials: AA
authors.lastname: Viggiano