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 |
Revisiting He Bubble Measurements in Aged Pu Using Modern S/TEM Techniques |
| Author(s) |
Douglas Smith, Theresa Kucinski, Magdalen Grismer, Matthew Foley-Janish |
| On-Site Speaker (Planned) |
Douglas Smith |
| Abstract Scope |
As Pu ages, radiogenic He is produced through alpha decay. This He accumulates in the lattice and has been reported to lead to He bubble formation in samples as young as 16 years old. Following the 2004 publication by A. J. Schwartz et al. in which He bubbles were measured using conventional TEM imaging and large defocus values to make the bubbles more apparent, the present study employs STEM imaging, EELS, and EFTEM to re-evaluate He bubble sizes in naturally aged Pu. The present study extends the range of Pu ages characterized to include material as young as two years and as old as sixty years while also resolving values to specific phases in Pu. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Nuclear Materials, Characterization, Other |