| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Seaborg Institutes: Emerging Topics in Actinide Materials and Science
|
| Presentation Title |
Identifying Chemical Signatures of Uranium Oxide Particles for Nuclear Forensics Using Synchrotron X-rays |
| Author(s) |
Rachel Lim, Alexander Baker, Alexander Ditter, Scott Donald, David Shuh, Brandon Chung |
| On-Site Speaker (Planned) |
Rachel Lim |
| Abstract Scope |
The field of nuclear forensics is growing in importance and the increasing capabilities at synchrotron light sources allows characterization of oxide particles with better spatial and compositional resolution than ever before. Uranium oxide particles derived from either multiple wet chemical processing methods or from the surface of bulk metal samples were examined using synchrotron X-ray spectroscopy techniques. A weakly-supervised method was developed to automatically analyze scanning tunneling X-ray microscopy (STXM) data. This, combined with X-ray fluorescence (XRF) data, has yielded information about the compositional difference (impurity content) in particles produced from unique processing methods. In addition to composition variation, multiple uranium oxidation states were observed and quantified between and within samples.
This work was prepared under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under Contract DE-AC52-07NA27344. |
| Proceedings Inclusion? |
Planned: |