Friction model to describe cluster bombardment

Short time molecular dynamics simulations were performed to model C60 and Au3 bombardment of an amorphous water sample in the projectile energy range of 5–120 keV. A previously proposed friction model has been applied to describe the fundamental motion of a projectile during cluster bombardment of a solid. This simple analytical model uses a definition of friction on a single particle to describe the cluster movement through a medium. Although the mathematics of the friction model vary among systems, the projectile motion and energy deposition of a single particle into the sample as well as the reactive environment created is close to that of C60 bombardment.