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Interference of Quantized Transition-State Pathways in the H + D2 → D + HD Chemical Reaction

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Science  13 Jun 2003:
Vol. 300, Issue 5626, pp. 1730-1734
DOI: 10.1126/science.1084041

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Abstract

The collision-energy dependence of the state-resolved differential cross section at a specific backward-scattering angle for the reaction H + D2 → D + HD is measured with the D-atom Rydberg “tagging” time-of-flight technique. The reaction was modeled theoretically with converged quantum scattering calculations that provided physical interpretation of the observations. Oscillations in the differential cross sections in the backward-scattering direction are clearly observed and are attributed to the transition-state structures that originate from the interferences of different quantized transition-state pathways.

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