Electronic effects in high-energy radiation damage in tungsten [electronic resource].
- Published
- Washington, D.C. : United States. Dept. of Energy. Office of Science, 2015.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy - Physical Description
- Article numbers 135,401 : digital, PDF file
- Additional Creators
- Oak Ridge National Laboratory, United States. Department of Energy. Office of Science, and United States. Department of Energy. Office of Scientific and Technical Information
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- Restrictions on Access
- Free-to-read Unrestricted online access
- Summary
- Even though the effects of the electronic excitations during high-energy radiation damage processes are not currently understood, it is shown that their role in the interaction of radiation with matter is important. We perform molecular dynamics simulations of high-energy collision cascades in bcc-tungsten using the coupled two-temperature molecular dynamics (2T-MD) model that incorporates both the effects of electronic stopping and electron–phonon interaction. We compare the combination of these effects on the induced damage with only the effect of electronic stopping, and conclude in several novel insights. In the 2T-MD model, the electron–phonon coupling results in less damage production in the molten region and in faster relaxation of the damage at short times. We show these two effects lead to a significantly smaller amount of the final damage at longer times.
- Report Numbers
- E 1.99:1265368
- Subject(s)
- Other Subject(s)
- Note
- Published through SciTech Connect.
03/13/2015.
"KC0202040"
"ERKCM86"
Journal of Physics. Condensed Matter 27 13 ISSN 0953-8984 AM
Eva Zarkadoula; Dorothy M. Duffy; Kai Nordlund; M. A. Seaton; I. T. Todorov; William J. Weber; Kostya Trachenko. - Funding Information
- AC05-00OR22725
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