b'Microstructural Characterization of High Burnup UO 2Principal Investigator: Fabiola CappiaTeam Members/ Collaborators: Tsvetoslav Pavlov, and David FrazerFigure 1. Porosity radial profile T he material behavior andbehavior and performance at high properties at the micro- burnup. Significant progress has been scopic scale are linked to themade in the last two decades in the macroscopic performance that aredevelopments of analytical materials of technological interest. Nuclearscience techniques that can be applied fuels undergo irradiation-inducedto highly radioactive materials. The modifications that deeply alter theiravailability of new techniques has structure and properties, thus affectingenabled investigations previously not performance. Experimental evidencepossible which deepen the under-that quantifies such modificationsstanding of the fuel characteristics and are necessary to determine the fuelproperties at high burnup. The better 54 2021|AFC ACCOMPLISHMENTS'