MD simulation of high energy cascades and damage accumulation in β-SiC in inertial fusion conditions

The interaction of high energy recoils with the silicon carbide lattice, used as a base for low-activation materials, was described using the molecular dynamics code, MDCASK, using the many-body semi-empirical inter-atomic Tersoff potential, merged with a repulsive binary potential obtained from ab initio calculations. The intra- and inter-pulse damage study was studied by means of Kinetic Monte Carlo diffusion calculations, 3 and 5 keV Si-recoil-induced cascade simulations. Simulations of accumulations up to 25 recoils of 500 eV and 1 kev were examined to study the damage states produced inside the material by intensive and prolonged irradiation in the absence of self-annealing.