Atomistic simulations of MeV ion irradiation of silica

M. Backman, F. Djurabekova, O. H. Pakarinen, K. Nordlund, Y. Zhang, M. Toulemonde, W. J. Weber

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

We used molecular dynamics simulations to study 2.3 MeV Au ion irradiation of silica. In this energy regime, the energy loss of the ion is divided almost equally between electronic and nuclear energy loss. The inelastic thermal spike model was used to model the electron-phonon interactions due to the high electronic energy loss. Binary collision approximation calculations provided input for the recoil energies due to MeV ions. We performed simulations of the damage due to the separate damage mechanisms as well as together, and found that the inelastic thermal spike is needed to accurately simulate the irradiation damage from MeV ions.

Original languageEnglish
Pages (from-to)129-132
Number of pages4
JournalNuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Volume303
DOIs
StatePublished - 2013
Externally publishedYes

Funding

W.J. Weber and Y. Zhang were supported by the U.S. Department of Energy, Basic Energy Sciences, Materials Science and Engineering Division. The theoretical calculations were performed using the supercomputer resources at the National Energy Research Scientific Computing Center located at Lawrence Berkeley National Laboratory, USA.

Keywords

  • Inelastic thermal spike
  • Molecular dynamics simulations
  • Radiation damage

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