Simulation of cluster impacts on metallic surfaces
Abstract
Energy, number-density, and confinement-time properties of 1-keV/atom Al32 and Al63 cluster impacts on Al and Au targets have been investigated by molecular-dynamics simulation. Inertial confinement of the incoming clusters leads to number-density increases of ~2 for very short time periods (<20 fs) in the primary impact zone. Simultaneous and near-simultaneous multiple collisions occasionally increase the potential energy of a particle to more than twice that allowed in isolated two-body collisions. Up to 12% of the kinetic energy of the incoming cluster is transferred to atoms which eject early in the collision cascade.
- Publication:
-
Physical Review Letters
- Pub Date:
- July 1990
- DOI:
- 10.1103/PhysRevLett.65.92
- Bibcode:
- 1990PhRvL..65...92S
- Keywords:
-
- 79.20.Nc;
- 02.70.+d;
- 79.20.Rf;
- Atomic molecular and ion beam impact and interactions with surfaces