| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advanced Characterization Techniques for Quantifying and Modeling Deformation
|
| Presentation Title |
Radiation Damage Defect Characterization Using In-situ Positron Spectroscopy |
| Author(s) |
Rasheed Auguste, M. Oskar Liedke, Maik Butterling, Blas Uberuaga, Farida Selim, Peter Hosemann |
| On-Site Speaker (Planned) |
Peter Hosemann |
| Abstract Scope |
Radiation induced defects in materials originate with the energy transfer from an incoming particle to a lattice and the displacement of the atoms from their original location. Larger defects evolve from the resulting non-equilibrium point defects created surviving the initial events as a function of dose rate, material, and temperature. Positron annihilation spectroscopy is a unique, nondestructive technique to investigate these small defects in materials difficult to investigate by other tools. Even though dynamic point defect populations are captured in rate theory, this work presents direct experimental validation of non thermal equilibrium vacancies during irradiation. In-situ positron annihilation spectroscopy was used to find direct evidence of the generation of non-equilibrium defects in silicon. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Characterization, Nuclear Materials, Other |