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Experiments have shown that cluster projectiles as compared to atomic projectiles enhance the secondary ion emission of organic molecules. The yield depends nonlinearly on the number of constituent atoms in the primary ion cluster. In this paper, we describe molecular dynamic simulations aimed at determining the fundamental mechanisms responsible for the enhancement in emission yield. Our model...
The high energy particle bombardment of molecular films adsorbed upon a metal substrate has been investigated via molecular dynamics computer simulations with an empirical many-body potential function constructed for studying reactive dynamics. These calculations identify lateral motion of fragments in the overlayer as giving rise to fragmentation and direct abstraction type reactions. In addition,...
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