DEPOSITION OF MASS-SELECTEDAg7ON Pd(100): FRAGMENTATION AND IMPLANTATION

G. Vandoni, C. Félix, R. Monot, J. Buttet, C. Massobrio and W. Harbich
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G. Vandoni: Institut de Physique Expérimentale, Ecole Polytechnique Fédérale, 1015 Lausanne, Switzerland
C. Félix: Institut de Physique Expérimentale, Ecole Polytechnique Fédérale, 1015 Lausanne, Switzerland
R. Monot: Institut de Physique Expérimentale, Ecole Polytechnique Fédérale, 1015 Lausanne, Switzerland
J. Buttet: Institut de Physique Expérimentale, Ecole Polytechnique Fédérale, 1015 Lausanne, Switzerland
C. Massobrio: Institut de Physique Expérimentale, Ecole Polytechnique Fédérale, 1015 Lausanne, Switzerland
W. Harbich: Institut de Physique Expérimentale, Ecole Polytechnique Fédérale, 1015 Lausanne, Switzerland

Surface Review and Letters (SRL), 1996, vol. 03, issue 01, 949-954

Abstract: Mass-selected silver-cluster ions$\left( {{\rm{Ag}}_{\rm{7}}^{\rm{ + }} } \right)$with an incident energy of 2.86 eV/atom and of 13.6 eV/atom are directed on a well-prepared Pd(100) surface, which is probed with thermal-energy atom (helium) scattering (TEAS), before, during, and after the deposition, yielding information on the collision process. We find that part of the cluster atoms are implanted into the surface layer, the fraction depending on the impact energy. Considerable fragmentation is present at both impact energies. Molecular dynamics calculations based on embedded atom method (EAM) potentials are used to model the collision process. These calculations confirm qualitatively the experimental results.

Date: 1996
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DOI: 10.1142/S0218625X96001704

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