Threshold behavior of endothermic reactions: C+(2P) + H2 → CH+ + H

Journal ArticleThe reaction C+(2p) + H2 → CH+ + H (1) and its deuterium analog is a model system in ion-molecule chemistry. It is of interest due to its astrophysical significance, because it is an endothermic process, and because the interaction involves several potential energy surfaces. Experimental work has included determinations of the total reaction cross section,1-3 studies of the reaction dynamics,4 measurements of product internal energy distributions,5 and chemiluminescence studies of electronically excited products.