About this Abstract |
Meeting |
2020 TMS Annual Meeting & Exhibition
|
Symposium
|
Computational Materials Science and Engineering of Materials in Nuclear Reactors
|
Presentation Title |
Electron-phonon Coupling Effects in Ion Irradiation of Metallic Systems |
Author(s) |
Eva Zarkadoula, German Samolyuk, William J Weber |
On-Site Speaker (Planned) |
Eva Zarkadoula |
Abstract Scope |
In ion irradiation, energy from the projectiles is transferred both to the nuclei and to the electrons of the material. While it is known that the nuclear energy loss results in defects and defect clusters, the effects of the electronic energy loss are not well understood. Using the two-temperature model in molecular dynamics simulations of cascades in nickel and nickel-based alloys, the effects of the electron-phonon interactions in the energy dissipation and damage production are investigated. Our results show that the local energy exchange between the atomic and electronic subsystems affects the number of surviving defects, as well as the size of the defect clusters. Including the electronic effects in molecular dynamics simulations of cascades is a better approach to the processes that take place during high energy irradiation, as it considers both energy loss mechanisms. |
Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |