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Caesium is one of the most important fission products and must be considered in all aspects of the fuel cycle. Numerous radial profiles of caesium and xenon have been measured by electron probe microanalysis (EPMA). These profiles are very similar and it has been concluded that the effective diffusion coefficient of caesium is very close to that of xenon. In this paper the effective diffusion coefficient of caesium is quantified. This information is used for the interpretation of radial xenon distributions at ultra-high burn-up measured by EPMA.

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Authors: LASSMANN K, ITU-Karlsruhe (DE);SCHUBERT A, ITU-Karlsruhe (DE);VAN DE LAAR J, ITU-Karlsruhe (DE);WALKER C.T, ITU-Karlsruhe (DE)
Bibliographic Reference: Oral Report delivered at: International Seminar on Fission Gas Behavior in Water, Reactor Fuels, Hosted in Cadarache (FR), 26-29 September 2000
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