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Off-normal incidence dissociative sticking of H2 on Cu(100) studied using six-dimensional quantum calculations
Rob van Harrevelt1, Uwe Manthe
1Theoretische Chemie, Universität Bielefeld, Postfach 100131, D-33501 Bielefeld, Germany. rob.v.harrevelt@ch.tum.de
Abstract:
Six-dimensional quantum calculations of the sticking probability for H2 hitting a Cu(100) surface with off-normal incidence are presented. The multiconfiguration time-dependent Hartree approach is employed for an efficient wave-packet propagation. The sticking probability is calculated for different initial momenta parallel to the surface. In contrast with the picture described in the literature, the sticking probability was found to depend on the parallel momentum. The results are explained by the topology of the potential-energy surface, which shows significant corrugation with a moderate variation of the barrier height with the surface site.
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