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

15 March 1984

journal article
research article
Published by AIP Publishing in The Journal of Chemical Physics

Vol. 80 (6) , 2978-2980
https://doi.org/10.1063/1.447010

Abstract

The total reaction cross section for the title reaction has been measured using a new ion beam apparatus specifically designed for accurate examination of the translational energy dependence of ion–molecule reactions. Previous results show excellent agreement with the present data if corrections to the energy scale used by previous workers are ignored. Such corrections were motivated by the discrepancy observed between the endothermicity for the reaction and the apparent threshold. The reasons for this discrepency are analyzed and information concerning the true threshold behavior is obtained. It is found that a simple model for endothermic ion–molecule reactions successfully reproduces the general threshold behavior.

Keywords

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