Some Negative-Ion Reactions with CO2

Abstract

The reactions O⁻ + CO₂→CO₂⁻ + O, O⁻ + CO₂→O₂⁻ + CO, NO⁻ + CO₂→CO₂⁻ + NO, O₂⁻ + CO₂→CO₃⁻ + O, and O₂⁻ + CO₂→CO₂⁻ + O₂ have been studied with a double mass spectrometer system. The maximum cross sections obtained are about 0.35, 0.2, 0.8, 0.12, and 0.26, respectively, in units of 10⁻¹⁶ cm². These maxima occur at reactant ion kinetic energies of 8–15 eV.