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Tritium Release from a Lithium Ceramic: Interpretation of the Trio Experiment

Mario Dalle Donne

Fusion Science and Technology

Volume 9 / Number 3 / May 1986 / Pages 503-505


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A new interpretation of the in situ TRIO experiment on tritium release from γ-LiAlO2 ceramic particles is presented. It is suggested that, due to a very small ceramic particle radius (R = 0.1 µm), the release-controlling phenomenon is desorption of tritium-containing molecules from the particle surface rather than tritium diffusivity in the particle. This hypothesis eliminates the large discrepancy with previous tritium diffusivity experiments with large particles, where the time-controlling phenomenon is clearly diffusivity.

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