About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
|
Symposium
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Accelerated Qualification of Nuclear Materials Integrating Experiments, Modeling, and Theories
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Presentation Title |
Gaps and Question Remained in Bridging Neutron Irradiation and Accelerator Ion Irradiation |
Author(s) |
Lin Shao |
On-Site Speaker (Planned) |
Lin Shao |
Abstract Scope |
Ion irradiation is effective for simulating high-damage neutron irradiation. However, it exhibits atypical factors like surface effects, injected interstitial effects, and dpa rate effects. While practices exist to mitigate these, knowledge gaps hinder conclusive predictions. Issues to discuss: (1) Does injected interstitial effect involve spreading or is it solely local? This affects prolonged irradiation credibility; (2) Can the temperature shifting model explain dpa effects in swelling studies? The current model lacks void nucleation state consideration critical in comparison to void growth stage; (3) Is the maximum swelling temperature from ion irradiation expected or an artifact? Void nucleation theory does not produce a swelling peak; (4) Can radiation damage as a function of dpa be determined by analyzing a single sample at various depths? If ion and neutron irradiation are equivalent under the same dpa, what is the role of irradiation time? Lastly, firsthand experience will be shared on minimizing artifacts. |
Proceedings Inclusion? |
Planned: |