|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Accelerated Materials Evaluation for Nuclear Application Utilizing Test Reactors, Ion Beam Facilities and Integrated Modeling
||Effects of Electronic Energy Loss on Damage Evolution in Ion-irradiated Ceramics
||William J. Weber, Eva Zarkadoula, Ritesh Sachan, Haizhou Xue, Ke Jin, Yanwen Zhang
|On-Site Speaker (Planned)
||William J. Weber
At ion energies typical of PKAs in fusion or from accelerator-based neutron sources and ions used to mimic fast neutron damage, nuclear and electronic energy losses can become comparable, and local ionization along the PKA/ion path can affect damage production. Experimental and computational approaches are used to investigate the separate and combined effects of nuclear and electronic energy loss on radiation damage in ceramics. Experimentally, ion mass and energy control the ratio of electronic to nuclear energy loss, and large-scale atomistic simulations are used to model these effects. The results demonstrate that electronic energy loss, typical of MeV ions, can lead to competitive damage recovery processes and additive or synergistic effects on damage production. These results have significant implications for interpreting and modeling the radiation response of nuclear ceramics in accelerated testing using MeV ion irradiation.
This work was supported by the U.S. DOE, BES, MSED.
||Planned: A print-only volume