MOLECULAR-DYNAMICS STUDIES OF PARTICLE IMPACTS WITH CARBON-BASED MATERIALS

Molecular dynamics simulations of particle impacts on carbon-based mat erials are described, A number of different semi-empirical, many-body potentials are used and modified to suit the particular problem involv ed. The simulations include the surface damage, sputtering, and ion re flection from graphite surfaces. The displacement energy thresholds an d interstitial formation in graphite is also described. Simulations in volving radiation damage in polymers and C-60 film growth on Si surfac es are also considered.