4-17 Molecular Dynamics Simulation Studies of Crater Formation at the Surface of Gold Nanowire

Previous works which studied the effects of cascade occurred at the metal surface indicate that,in case of most energy of the incident ion is deposited in the vicinity of the surface,the pronounced damage caused by viscous flow or by microexplosion can lead to creation of large number of adatoms and vacancy dislocation loops beneath the surface[1,2],or even formation of craters on the surface[3-6].Bombardment with PKAs of kinetic energy higher than 10 keV will lead to the crater formation at the surface of nanowires.Fig.