Merged Beam Studies of Associative Ionization
Abstract
Carbon monoxide was detected in emission in the supernova 1987A spectrum and it is likely that its ion, CO+, has also been detected.1 The radiative association process was considered2 for formation of CO+, from C+ + O, but not the associative ionization (AI) process from charged reactants C+ + O. Bertrand and Van Tiggelen3 found that the process, N(2D, 2P)+O(3P)→NO++e, is the primary source of nitrogen oxide cations in ammonia and hydrogen-oxygen-nitrogen flames. The AI process that arises from the charged reactants N+ + O−, was not considered. The hydroxyl cation, OH+, was detected in interstellar clouds4 (where its destruction leads to H3O+), in comets and in planetary atmospheres5. It is important to characterize the formation pathways for OH+, and among them the AI process. Here, we provide AI cross sections for the association of charged reactants that leads to the production of CO+, NO+, O2 + and OD+.
Keywords
Associative Ionization Charged Reactant Rovibrational Level Correlation Rule Transfer Ionization ProcessPreview
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