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The distribution of plutonium on a microstructural scale in a mixed oxide (MOX) fuel is an important parameter for both operation and subsequent reprocessing. This paper describes the development and application of X-ray microanalysis techniques to produce plutonium concentration 'maps', enabling the quantitative comparison of the plutonium distribution before and after irradiation. The measurements show that SBR MOX is primarily a homogeneous mixture of UO(2) and PuO(2). Quantitative analysis shows that the area fraction and size distribution of plutonium rich regions remains largely unchanged following irradiation. The work demonstrates that the techniques are a useful and efficient way of characterising both unirradiated and irradiated fuel.

Additional information

Authors: IVISON P.K, AEA Technology Windscale, Seascale, Cumbria (UK);COOK P.M.A, BNFL, Sellafield, Seascale, Cumbria (UK);BREMIER S, JRC Institute for Transuranium Elements, Karlsruhe (DE);WALKER C.T, JRC Institute for Transuranium Elements, Karlsruhe (DE)
Bibliographic Reference: Oral Report delivered at: IAEA Technical Committee Meeting on Nuclear Fuel Behaviour Modelling at High Burnup, hosted at: Windermere (GB) 19-23 June 2000
Record Number: 200013012 / Last updated on: 2001-01-24
Original language: en
Available languages: en
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