Quantum tunneling vibrational assisted

A detailed analysis of the quantum results revealed the origin of this behavior. The increased efficacy of the v state arises from both mode softening and vibrationally non-adiabatic couplings. Furthermore this analysis revealed that most of the reactivity at the experimental surface temperature (475 K) is due to thermally assisted over-the-barrier processes, and not to tunneling. Tunneling becomes important at lower incidence energies and lower surface temperatures. 

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