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Fundamental aspects (lattice location, interaction with lattice defects, diffusion, precipitation into bubbles, radiation induced re-solution, thermal solubility, grain boundary bubbles, their venting, etc.) of the behaviour of inert gases in ceramic compounds of uranium (oxides, carbides and nitrides) are discussed. Emphasis is placed on heavy rare gases, (Kr, Xe) and on UO(2) for which most data and theoretical calculations exist. Both fission and ion implantation are used to produce or incorporate the gases in the ceramics. The experimental techniques used to study inert gas behaviour include release measurements, careful electron microscopy, damage and lattice location studies by Rutherford-backscattering/ channelling, electron microprobe analysis etc. The resultant picture is almost complete for UO(2) but still contains important gaps for carbides and nitrides.

Additional information

Authors: MATZKE H-J, JRC Karlsruhe (DE)
Bibliographic Reference: Paper presented: NATO Advanced Research Workshop on Fundamental Properties of Inert Gases in Solids, Bonas (FR), Sept. 16-22, 1990
Availability: Available from (1) as Paper EN 35543 ORA
Record Number: 199011783 / Last updated on: 1994-12-02
Original language: en
Available languages: en
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