Ion-induced energy propagating front and migration of point defects in metals – II

Abstract

We present a molecular dynamics study of the emission and propagation of an energy front from the core of an ion-induced collision cascade. Cu metal and PtCu dilute alloy were used as model cases. Both systems were modeled using embedded atom method potentials with periodic boundary conditions. We also used 3D visualization to inspect the temporal evolution of the energy distribution in space. Additionally, we have calculated the temporal evolution of the atomic density and atomic migration inside the cascade core region and concluded that the interpretation of the chemical properties of IBM in terms of the known mechanisms is not satisfactory. We also concluded that the mechanism proposed in a previous paper, and examined more carefully here, is a good candidate to fulfill the conditions for the missing interpretation. We also observe that the emission of the energy front plays an important role in the evolution of the dynamics of the system inside the cascade core region.