Mechanisms of Radiation-Induced Viscous Flow: Role of Point Defects

S. G. Mayr, Y. Ashkenazy, K. Albe, R. S. Averback

Research output: Contribution to journalArticlepeer-review

Abstract

Mechanisms of radiation-induced flow in amorphous solids have been investigated using molecular dynamics computer simulations. It is shown for a model glass system, CuTi, that the radiation-induced flow is independent of recoil energy between 100 eV and 10 keV when compared on the basis of defect production and that there is a threshold energy for flow of [Formula presented]. Injection of interstitial- and vacancylike defects induces the same amount of flow as the recoil events, indicating that point-defect-like entities mediate the flow process, even at 10 K. Comparisons of these results with experiments and thermal spike models are made.

Original languageEnglish (US)
Pages (from-to)4
Number of pages1
JournalPhysical review letters
Volume90
Issue number5
DOIs
StatePublished - 2003

ASJC Scopus subject areas

  • General Physics and Astronomy

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