| About this Abstract |
| Meeting |
Materials in Nuclear Energy Systems (MiNES) 2021
|
| Symposium
|
Materials in Nuclear Energy Systems (MiNES) 2021
|
| Presentation Title |
Free Surface Impact on Radiation Damage in Pure Nickel by In-situ Self-ion Irradiation: Can It be Avoided? |
| Author(s) |
Kan Ma, Brigitte Décamps, Thomas Jourdan, Frédéric Prima, Marie Loyer-Prost |
| On-Site Speaker (Planned) |
Marie Loyer-Prost |
| Abstract Scope |
In-situ irradiation in a Transmission Electron Microscope (TEM) is a powerful tool to study microstructural evolution, and obtain an insight into dynamic mechanisms of fundamental radiation damage. Howerver, a major issue of these studies is the influence of free surfaces, acting as a strong sink for radiation-induced defects.
In this work, in-situ irradiation experiments are combined with a calculation model to get a better understanding of the so-called surface effect and determine in which conditions it could be avoided. Nickel is chosen for the high mobility of its self-interstitials. Ultra-high purity Ni thin foils are in-situ irradiated by 2 MeV Ni2+ ions at high temperatures (400-700°C) using the JANNuS-Orsay facility. Microstructural evolution and dislocation loop characteristics are finely analyzed in function of specimen thickness. |
| Proceedings Inclusion? |
Undecided |