| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Irradiation Testing: Facilities, Capabilities, and Experimental Designs
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| Presentation Title |
Ultrafast-Electron-diffraction Studies of Radiation-damaged Materials: An Example on the Melting Behavior of He-implanted W |
| Author(s) |
Mianzhen Mo, Ling Wang, Thies Albert, Alfredo Correa, Zhijiang Chen, Leora Dresselhaus-Marais, Mungo Frost, Nicholas Hartley, Laurenz Kremeyer, Matthias Kling, Emma McBride, Samuel Murphy, Benjamin Ofori-Okai, Alexander Hume Reid, Adam Summers, Klaus Sokolowski-Titen, Xiaozhe Shen, Artur Tamm, Yongqiang Wang, Xueli Zheng, Siegfried Glenzer |
| On-Site Speaker (Planned) |
Mianzhen Mo |
| Abstract Scope |
The development of theories for predicting radiation damage across multiple length and time scales plays a vital role in materials design for future fusion reactors. This is a scientific area with an urgent need for experimental data that can validate modelling assumptions. However, existing techniques for irradiation testing are constrained by temporal resolutions and cannot reach ultrafast time scales required to understand the atomic dynamics in radiation-damaged materials. To address this challenge, we apply the technique of ultrafast electron diffraction (UED) to visualize the structural dynamics of radiation-damaged materials on atomic time and length scales, and understand how radiation defects change the material properties and performance under fusion reactor conditions. We conduct the experimental studies in the MeV-UED instrument of LCLS at SLAC. As an example, we will showcase the results of studying the melting behavior of W with He implantation. Molecular dynamics simulation results will be also presented. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Characterization, Nuclear Materials, Phase Transformations |