Dipole excitations of ar substrate in contact with na clusters abstract (901).

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Author	P. M. Dinh, A. Reinhard, P. -G. E. Suraud, A.
Abstract	We analyze the excitation of Ar substrate in contact with Na clusters using a previously developed hierarchical model for the description of the system cnstituted of a highly reactive metal cluster in contact with a rather inert substrate. Particular attention is paid to the dipole excitation of the Ar atoms and the energy stored therein. The Na clusters are considered at different charge states, anions, cations, and neutral clusters for the case of deposition and a highly ionized cluster embedded in a matrix. It is found that the dipole polarization of the Ar atoms stores the largest fraction of energy in the case of charged clusters. Some, although smaller, polarization is also observed for polar clusters, as Na6. The effect is predominantly induced by the electrostatic interaction. Key words: TDDFT, hierarchical approach, deposition dynamics, rare gas surface, dipole excitation
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Subject Keyword	Dipole Excitation Ar Substrate Na Cluster Abstract Na Cluster Reactive Metal Cluster Inert Substrate Dipole Polarization Polar Cluster Hierarchical Approach Ar Atom Hierarchical Model Neutral Cluster Ar Atom Store Deposition Dynamic Ionized Cluster Rare Gas Surface Particular Attention Different Charge State Electrostatic Interaction
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