Review on the calculations of atomic collisions in solids

Radiation damage of fusion reactor materials is caused by the atomic collision processes in solids. The theoretical approach to this phenomena has achieved a rapid progress by the recent advent of fast computing machine. This report surveys the literatures which concern the analyses of atomic collision processes with the use of molecular dynamical simulation methods, and summarizes their results. The surveyed items include, 1) interatomic potentials and their applicability, 2) dynamical simulation methods, 3) results of computer simulations such as Frenkel pair production processes. Many-body effects such as focussing replacement phenomenon and anisotropic aspects of displacement energy threshold have been realized by the computer simulations of atomic collision processes. (author)