Kinetics of CO+ and CO2+ with N and O atoms
Abstract
We have measured reaction rate constants for CO+ and CO2+ reacting with N and O atoms using a selected ion flow tube apparatus equipped with a microwave discharge atom source. Experimental work was supplemented by molecular structure calculations. Calculated pathways show the sensitivity of kinetic barriers to theoretical methods and imply that high-level ab initio methods are required for accurate energetics. We report room-temperature rate constants of 1.0 ± 0.4 × 10−11 cm3 s−1 and 4.0 ± 1.6 × 10−11 cm3 s−1 for the reactions of CO+ with N and O atoms, respectively, and 8.0 ± 3.0 × 10−12 cm3 s−1 and 2.0 ± 0.8 × 10−11 cm3 s−1 for the reactions of CO2+ with N and O atoms, respectively. The reaction of CO2+ + O is observed to yield O2+ exclusively. These values help resolve discrepancies in the literature and are important for modeling of the Martian atmosphere.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Feb 23, 2018
- Source ID
- 10.1063/1.5011195
Entities
People
- Albert A Viggiano
- Jake E. Tenewitz
- Jenny C. Sanchez
- Joshua J Melko
- Nicholas S Shuman
- Oscar Martinez Jr.
- Shaun G Ard
- Trí Lê
Organizations
- Air Force Office of Scientific Research
- Air Force Research Laboratory
- University of North Florida