Abstract
Absolute state‐selected total cross sections for O2+, CO2+, CO+, and C+ resulting from the reaction O+(4S) + CO2 have been measured in the center‐of‐mass collision energy (Ec.m.) range of 0.2–150 eV. The cross section for O2+ drops off rapidly with increasing Ec.m. and becomes essentially zero at Ec.m. > 3 eV. The charge transfer CO2+ is overwhelmingly the major product ion at Ec.m. > 0.5 eV. The onsets measured for CO+ and C+ are consistent with the thermochemical thresholds for the formation of CO+ + 2O and C+ + 3O, respectively.
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