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Bubble morphology in U3Si2 implanted by high-energy Xe ions at 300 °C

The microstructure modifications of a high-energy Xe implanted U3Si2, a promising accident tolerant fuel candidate, were characterized and are reported upon. The U3Si2 pellet was irradiated at Argonne Tandem Linac Accelerator System (ATLAS) by an 84 MeV Xe ion beam at 300 °C. The irradiated specimen...

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Published in:Journal of nuclear materials 2017-11, Vol.495 (C), p.146-153
Main Authors: Miao, Yinbin, Harp, Jason, Mo, Kun, Zhu, Shaofei, Yao, Tiankai, Lian, Jie, Yacout, Abdellatif M.
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cited_by cdi_FETCH-LOGICAL-c3266-28997ef7f0a1d18f538d8f64e1f004b8c8308cb9888351f0616fa869211f32533
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container_issue C
container_start_page 146
container_title Journal of nuclear materials
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creator Miao, Yinbin
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Yacout, Abdellatif M.
description The microstructure modifications of a high-energy Xe implanted U3Si2, a promising accident tolerant fuel candidate, were characterized and are reported upon. The U3Si2 pellet was irradiated at Argonne Tandem Linac Accelerator System (ATLAS) by an 84 MeV Xe ion beam at 300 °C. The irradiated specimen was then investigated using a series of transmission electron microscopy (TEM) techniques. A dense distribution of bubbles were observed near the range of the 84 MeV Xe ions. Xe gas was also found to accumulate at multiple types of sinks, such as dislocations and grain boundaries. Bubbles aggregated at those sinks are slightly larger than intragranular bubbles in lattice. At 300 °C, the gaseous swelling strain is limited as all the bubbles are below 10 nm, implying the promising fission gas behavior of U3Si2 under normal operating conditions in light water reactors (LWRs).
doi_str_mv 10.1016/j.jnucmat.2017.07.066
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subjects Bubbles
Dislocations
Energy
Fission gas behavior
Grain boundaries
Ion irradiation
Light water reactor (LWR)
Light water reactors
Linear accelerators
Microstructure
Microstructure characterization
NUCLEAR FUEL CYCLE AND FUEL MATERIALS
Nuclear fuels
Silicide fuels
Sinkholes
Strain
Transmission electron microscopy
Uranium silicide
title Bubble morphology in U3Si2 implanted by high-energy Xe ions at 300 °C
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