A crossed molecular beam study of the translational energy dependence of Cl+Br2→BrCl+Br reaction

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Abstract
A crossed molecular beam study of the Cl+Br2→BrCl+Br reaction using supersonic nozzle beams of Cl and Br2 has been carried out at collision energies of 6.8, 14.7, and 17.7 kcal/mole. At all three collision energies the BrCl product is quite strongly forward peaked, with a large fraction (80%–85%) of the energy in internal degrees of freedom. The results of the experiment indicate that the Cl+Br2 reaction displays the characteristics of an exoergic reaction on an attractive surface with early energy release. Estimated total cross sections at 6.8 and 14.7 kcal/mole are 11 Å and 14 Å2, respectively.