About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Computational Thermodynamics and Kinetics
|
Presentation Title |
Energy: a Path Forward to Connect Radiation Damage Simulations and Experiments |
Author(s) |
Charles A. Hirst, Rachel C. Connick, Penghui Cao, R. Scott Kemp, Michael P. Short |
On-Site Speaker (Planned) |
Charles A. Hirst |
Abstract Scope |
Experimentally validating decades of radiation damage simulations remains an outstanding challenge for the field of nuclear materials science. Current characterisation techniques are unable to detect the full spectrum of defects in irradiated metals. We propose to overcome this challenge by characterising defects through their energetic signatures of activation and annihilation, upon heating. Molecular dynamics annealing simulations are used to predict the stored energy release of Al electron-irradiated at cryogenic temperatures. Extrapolation across 11 orders of magnitude in time and 18 orders of magnitude in mass yields results which match previous experiments within a factor of 2. These results are used to evaluate the combination of material parameters which generate statistically-significant measurements of stored energy release in irradiated materials. This work demonstrates the power of simulated and experimental defect annealing, and reveals a new route between modelling and measurement in materials science. |
Proceedings Inclusion? |
Planned: |
Keywords |
Nuclear Materials, Modeling and Simulation, Characterization |