Reaction cross section and product ion time-of-flight measurements for collisions of N+ and N+2 with CO2 at suprathermal energies

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Abstract
Charge exchange and dissociative ionization cross sections are reported for N+–CO2 and N+2–CO2 collisions at center‐of‐mass energies between 2 and 40 eV. Product ion kinetic energies are measured using time‐of‐flight techniques. Energy resonance considerations based on CO2 ionization Franck–Condon factors predict charge exchange to be slow for both of these reaction pairs. The N+–CO2 charge exchange, however, exhibits a large cross section and proceeds about one order of magnitude faster than the N+2–CO2 charge exchange. The formation of CO+ in N+–CO2 collisions is reported, while no dissociative ionization products are observed in the N+2–CO2 system.