Abstract
A simple classical model was proposed to study the effect of reactant rotation on reactivity for atom-diatom collisions. The model was able to reproduce trends recently reported in the reaction cross section for H + H/sub 2/ and other systems. Stretching of the target diatom bond during the collision was found to enhance the effectiveness of rotation in promoting reaction. This suggested that rotation may promote reaction more readily on surfaces with late barriers. The model results were found to be particularly sensitive to the long-range anisotropy of the potential, implying that rotational excitation of reactants may be a means of probing that part of the potential.
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