Coulomb explosions for swift C-60 ion-clusters penetrating in solids II - The molecular dynamics simulations

We study the interaction of the swift C-60 ion-clusters with solids. The dy namic interacting forces acting on the individual ions in the cluster are d erived based on the linear-response dielectric theory with the PLA dielectr ic function, and a set of equations describing the motion of the individual ions is obtained. It has been shown that by solving the equations of the m otion, the wake effects of the dynamic interactions result in the strong as ymmetric structures of the high-velocity C-60 clusters, i.e., the leading i ons in the cluster explode very fast, while the trailing ions in the cluste r almost remain in stable states.