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Title: Microstructure evolution in Xe-irradiated UO2 at room temperature

In situ Transmission Electron Microscopy was conducted for single crystal UO2 to understand the microstructure evolution during 300 keV Xe irradiation at room temperature. The dislocation microstructure evolution was shown to occur as nucleation and growth of dislocation loops at low irradiation doses, followed by transformation to extended dislocation segments and tangles at higher doses. Xe bubbles with dimensions of 1-2 nm were observed after room-temperature irradiation. Electron Energy Loss Spectroscopy indicated that UO2 remained stoichiometric under room temperature Xe irradiation.
Authors:
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Publication Date:
OSTI Identifier:
1133858
Report Number(s):
INL/JOU-14-31269
DOE Contract Number:
DE-AC07-05ID14517
Resource Type:
Journal Article
Resource Relation:
Journal Name: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and; Journal Volume: 330
Research Org:
Idaho National Laboratory (INL)
Sponsoring Org:
DOE - SC
Country of Publication:
United States
Language:
English
Subject:
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS bubble; dislocation; Microstructure; UO2; Xe ion irradiation