Effects of molecular rovibrational states and surface topologies for molecule-surface interaction: Chemisorption dynamics of D(2) collision with rigid Ni surfaces


BÖYÜKATA M. , Guvenc Z. B.

BRAZILIAN JOURNAL OF PHYSICS, vol.36, no.3A, pp.725-729, 2006 (Journal Indexed in SCI) identifier

  • Publication Type: Article / Article
  • Volume: 36 Issue: 3A
  • Publication Date: 2006
  • Title of Journal : BRAZILIAN JOURNAL OF PHYSICS
  • Page Numbers: pp.725-729
  • Keywords: chemisorption, diatomic molecule, deuterium molecule, nickel surface, 6-DIMENSIONAL QUANTUM DYNAMICS, DISSOCIATIVE CHEMISORPTION, ASSOCIATIVE DESORPTION, METAL-SURFACES, H-2, ADSORPTION, HYDROGEN, CLUSTERS, SIMULATION, DEPENDENCE

Abstract

A quasiclassical and micro-canonical molecular dynamic simulation techniques have been applied for D(2)(v,j) + Ni-surface collision systems. Dissociative adsorptions of a D(2) molecule on the rigid low index (100), (110) and (111), surfaces of the nickel are investigated to understand the effects of the different surfaces, impact sites and the initial rovibrational states of the molecule on molecule-surface collisions. Interactions between the molecule and the Ni surfaces are mimicked by a LEPS potential. Dissociative chemisorption probabilities of the D(2)(v,j) Molecule ( for the vibrational (v) = 0 and rotational (j) = 0, 1, 3, 10, and for the v = 1,j = 0 states on different impact sites of the surfaces) are presented for the translation energies between 0.001 and 1.0 eV. The probabilities obtained at each collision site have unique behavior for the colliding molecule which is moving along the surface normal direction. It has been observed that at the low collision energies the indirect processes (steering effects) enhance the reactivity on the surfaces. The results are compared to the related studies in the literature.