Hl. Heinisch, DEFECT PRODUCTION IN HIGH-ENERGY CASCADES - THE ROLES OF MOLECULAR-DYNAMICS AND BINARY COLLISION SIMULATIONS, Radiation effects and defects in solids, 129(1-2), 1994, pp. 113-116
The processes of radiation damage, from initial defect production to m
icrostructure evolution, occur over a wide spectrum of time and size s
cales. An understanding of the fundamental aspects of these processes
requires a spectrum of theoretical models, each applicable in its own
time and distance scales. As elements of this spectrum of models, mole
cular dynamics and binary collision simulations play complementary rol
es in the characterization of the primary damage state of high energy
collision cascades. Molecular dynamics is needed to describe the indiv
idual point defects in the primary damage state with the requisite phy
sical reality. The binary collision approximation is needed to model t
he gross structure of statistically significant numbers of high energy
cascades. Information provided by both models is needed for connectin
g the defect production in the primary damage state with the appropria
te models of defect diffusion and interaction describing the microstru
cture evolution.