|
|||||
|
|
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. |
| Affiliation: | 1.Material Science and Technology Division, Los Alamos National Laboratory, Los Alamos, NM, 87545, USA ;2.Materials and Fuels Complex, Idaho National Laboratory, Idaho Falls, ID, 83415, USA ;3.Reactor and Nuclear Systems Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA ;4.Physics Division, Los Alamos National Laboratory, Los Alamos, NM, 87545, USA ;5.Nuclear Engineering Department, University of California Berkeley, Berkeley, CA, 94720, USA ;6.Forschungs-Neutronenquelle Heinz Maier-Leibnitz (FRM II), 85748, Garching b. München, Germany ;7.Nuclear Physics Institute, Technische Universit?t Darmstadt, 64289, Darmstadt, Germany ;8.Space Science Laboratory, University of California Berkeley, Berkeley, CA, 94720, USA ; |
| 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 (3) 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. |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ | |