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dc.contributor.authorGarrison, B.J.
dc.contributor.authorWinograd, N.
dc.contributor.authorDeaven, D.M.
dc.contributor.authorReimann, C.T.
dc.contributor.authorLo, D.Y.
dc.contributor.authorTombrello, T.A.
dc.contributor.authorHarrison, D.E. Jr.
dc.contributor.authorShapiro, M.H.
dc.date.accessioned2016-01-07T20:06:22Z
dc.date.available2016-01-07T20:06:22Z
dc.date.issued1988-05-01
dc.identifier.citationPhysical Review B, v. 37, no. 13, May 1, 1988, pp. 7197-7203en_US
dc.identifier.urihttp://hdl.handle.net/10945/47482
dc.descriptionApproved for public release; distribution is unlimiteden_US
dc.description.abstractIn this paper, we show that many-body interactions are important for describing the energy- and angle-resolved distributions of neutral Rh atoms ejected from keV-ion-bombarded Rh{111}. We compare separate classical-dynamics simulations of the sputtering process assuming either a many-body potential or a pairwise additive potential. The many-body potential is constructed using the embedded-atom method to describe equilibrium properties of the crystal, parameters from the Moliere potential to describe close encounters between energized atoms, and parameters from a Rh(2) potential to aid the description of the desorption event. The most dramatic difference between the many-body potential and the pair potential is in the predicted kinetic energy distributions. The pair-potential kinetic energy distribution peaks at ~2 eV, whereas the many-body potential predicts a broader peak at ~4 eV, giving much better agreement with experiment. This difference between the model potentials is due to the predicted nature of the attractive interaction in the surface region through which all ejecting particles pass. Variations of the many-body potential parameters are examined in order to ascertain their effect on the predicted energy and singular distributions. A specific set of parameters has been found which leads to excellent agreement with recent experimental trajectory measurement of desorbed Rh atoms.en_US
dc.format.extent8 p.en_US
dc.publisherAmerican Physical Societyen_US
dc.rightsThis publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.en_US
dc.titleMany-body embedded-atom potential for describing the energy and angular distributions if Rh atoms desorbed from ion-bombarded Rh{111}en_US
dc.typeArticleen_US
dc.contributor.corporateNaval Postgraduate School (U.S.)en_US
dc.contributor.departmentPhysics and Chemistryen_US


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