Low Energy Ion Channelling in Single-Wall Nanotubes

Monte Carlo simulation is used to study the low energy He ion channelling in a (17, 0) single-wall nanotube and its rope. The simulation shows that the channelling critical angle Psi_c= 48E^-1/2 (E is incident energy) for a 1.31-nm-diameter initial beam into the nanotube, while Psi_c= 45E^-1/2 for the 1.31-nm-diameter initial beam into its rope.