Abstract

Theoretical quantum chemical calculations of the cross sections and rates for the dissociative recombination of the v=0 level of the ground state of OH+ show that recombination occurs primarily along the 2 2Π diabatic route. The products are O(1D) and a hot H atom with 6.1 eV kinetic energy. The coupling to the resonances is very small and the indirect recombination mechanism plays only a minor role. The recommended value for the rate coefficient is (6.3±0.7) ×10−9×(Te/300)−0.48 cm3/s for 10<Te<1000 K.

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