Electronic effects in high-energy radiation damage in tungsten

Journal of Physics. Condensed Matter : an Institute of Physics Journal
Eva ZarkadoulaK Trachenko

Abstract

Although 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. These two effects lead to a significantly smaller amount of the final damage at longer times.

References

Jul 1, 1991·Physical Review. B, Condensed Matter·M W FinnisA J Foreman
Mar 2, 2013·Journal of Physics. Condensed Matter : an Institute of Physics Journal·E ZarkadoulaK Trachenko
Feb 8, 2014·Journal of Physics. Condensed Matter : an Institute of Physics Journal·E ZarkadoulaK Trachenko

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Citations

Aug 21, 2018·Journal of Physics. Condensed Matter : an Institute of Physics Journal·A De BackerK Nordlund
Mar 25, 2019·The Journal of Chemical Physics·Z H HeB C Pan

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