Journal
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
Volume 303, Issue -, Pages 129-132Publisher
ELSEVIER
DOI: 10.1016/j.nimb.2012.10.020
Keywords
Radiation damage; Molecular dynamics simulations; Inelastic thermal spike
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Funding
- U.S. Department of Energy, Basic Energy Sciences, Materials Science and Engineering Division
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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. (C) 2012 Elsevier B.V. All rights reserved.
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