Mechanisms of radiation-induced flow in amorphous solids were investigated by using molecular dynamics computer simulations. It was shown for a model glass system, CuTi, that the radiation-induced flow was independent of recoil energy between 100eV and 10keV, when compared on the basis of defect production, and that there was a threshold energy for flow of about 10eV. The injection of interstitial- and vacancy-like defects induced the same amount of flow as the recoil events; thus indicating that point-defect-like entities mediated the flow process; even at 10K.

Mechanisms of Radiation-Induced Viscous Flow - Role of Point Defects. S.G.Mayr, Y.Ashkenazy, K.Albe, R.S.Averback: Physical Review Letters, 2003, 90[5], 055505 (4pp)