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- W2012144622 abstract "The reaction of H2 on Cu(100) is studied using a wave-packet method to solve a four-dimensional quantum mechanical model for impact on the high-symmetry hollow and top sites. The potential energy surface (PES) is a fit to the results of density functional calculations treating a periodic overlayer of H2 on a Cu slab. The dynamics calculations include motion in the azimuthal coordinate although the PES does not depend on φ for impact on the top and hollow sites. Large dissociation probabilities (∼0.9) are found for impact at the hollow site but those for impact at the top site are lower (∼0.3). Dissociation probabilities for molecules incident with “helicoptering” motion (mj=j) are larger than those for molecules with “cartwheeling” motion (mj=0). This differs from the results of previous calculations for impact at the azimuthally corrugated bridge site which predicted comparable probabilities for the two orientations of incident molecules. The dissociation probabilities from fixed-site calculations at the different impact sites are combined to yield an averaged probability which is compared with experiment and the results of six-dimensional quantum calculations. Vibrationally inelastic scattering is predicted to occur primarily for impact at the top site." @default.
- W2012144622 created "2016-06-24" @default.
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- W2012144622 date "1998-04-22" @default.
- W2012144622 modified "2023-10-17" @default.
- W2012144622 title "Dissociative adsorption of H2 on Cu(100): Fixed-site calculations for impact at hollow and top sites" @default.
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- W2012144622 doi "https://doi.org/10.1063/1.476105" @default.
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