About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Special Topics in Nuclear Materials: Reproducibility and Uncertainty; Hydrogen Effects; Space and Microreactor Systems
|
| Presentation Title |
Neutron Irradiation Effects on Lithium Aluminate Pellets With Different Thickness |
| Author(s) |
Xiao-Ying Yu, Jiyoung Son, David Senor |
| On-Site Speaker (Planned) |
Xiao-Ying Yu |
| Abstract Scope |
We studied tritium breeding lithium aluminate pellets in the Tritium-Producing Burnable Absorber Rod. The selected irradiated pellets have three different thickness, namely standard, thin, and thick wall thickness, which relates to their tritium producing and retention capacities. Irradiated materials were reduced to small sizes using scanning electron microscopy (SEM) – focused ion beam (FIB). Isotopes, such as deuterium, tritium, and lithium, are detected using highly sensitive time-of-flight secondary ion mass spectrometry (ToF-SIMS). We show that the standard and thin thickness pellets are better in retaining tritium than the thick pellet in tritium production. The thinner wall pellet retains more tritium than the standard or thick ones. Isotope exchange reactions take place and tritiated hydrocarbons exist in all pellets. As the first study of irradiated pellets using ToF-SIMS, this work provides a new way to determine isotopic abundance of irradiated materials, improving understanding of tritium breeding in fission and fusion reactors. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Ceramics, Other, Characterization |