Kinetics of CO+ and CO2+ with N and O atoms.
Kinetics of CO+ and CO2+ with N and O atoms.
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DOI：
10.1063/1.5011195
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发表时间：
2018-02
期刊：
影响因子：
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通讯作者：
Jake E. Tenewitz;Trí Lê;Oscar E. Martínez;S. Ard;N. Shuman;J. C. Sanchez;A. Viggiano;Joshua J Melko
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文献类型：
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作者：
Jake E. Tenewitz;Trí Lê;Oscar E. Martínez;S. Ard;N. Shuman;J. C. Sanchez;A. Viggiano;Joshua J Melko
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.
