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- Title
Advanced Postirradiation Characterization of Nuclear Fuels Using Pulsed Neutrons.
- Authors
Vogel, Sven C.; Bourke, Mark A. M.; Craft, Aaron E.; Harp, Jason M.; Kelsey, Charles T.; Lin, Jay; Long, Alex M.; Losko, Adrian S.; Hosemann, Peter; McClellan, Kenneth J.; Roth, Markus; Tremsin, Anton S.
- Abstract
Methods for postirradiation characterization of bulk (cm3) irradiated materials or even spent nuclear fuels are sparse due to their extremely radioactive nature. While several methods exist to characterize smaller volumes (< 1 mm3) of such samples, selecting these volumes from larger samples is challenging. X-ray-based methods are prohibitive due to the strong γ-radiation from the sample flooding the detectors. Neutron-based methods available in the proximity of irradiation reactors allow for thermal neutron radiography or computed tomography using a small reactor source, but one cannot assess isotope distributions or microstructural features such as phases, texture, or strain from diffraction measurements due to flux limitations. We present herein a pathway to provide pulsed neutron characterization of bulk irradiated samples using time-of-flight neutron diffraction for microstructural characterization and energy-resolved neutron imaging for assessment of isotopic densities and distributions. Ultimately, laser-driven pulsed neutron sources may allow deployment of these techniques pool-side at irradiation reactors.
- Subjects
NUCLEAR fuels; NEUTRONS; THERMAL neutrons; NEUTRON diffraction; NEUTRON radiography; NEUTRON irradiation; MEDICAL digital radiography
- Publication
JOM: The Journal of The Minerals, Metals & Materials Society (TMS), 2020, Vol 72, Issue 1, p187
- ISSN
1047-4838
- Publication type
Article
- DOI
10.1007/s11837-019-03849-2