Abstract
We present a molecular dynamics simulation of the rupture of a subsurface Ar bubble in Cu(100) and the ejection of Ar atoms and Ar2 dimers. A cavity in the subsurface region was pressurised by inserting Ar atoms until a stability condition was met and the bubble rupture was initiated by the impact of a 200 eV Ar atom. We calculate local temperature and pressure profiles inside the Ar bubble, the angular and energy distributions of emitted Ar atoms and Ar2 dimers and compare with experiments.