Figure 1
(a) Distance of closest approach and corresponding potential energy for iron atoms as a function of atomic recoil energy. Black dots are the average values obtained from the individual simulations shown as open diamonds. The s.e.m. is indicated by the error bars, with the scatter arising from random atomic velocities in the target. The red squares are the potential energy associated with the average distance. The dashed lines are guides for the eye. (b) The time evolution of the number of displaced atoms, identified using Wigner–Seitz cell analysis, during a 10-keV displacement cascade in Ni at 300 K; three phases are shown: supersonic, sonic and thermally enhanced recovery.
