Release of 6Li from Irradiated Beryllium-Oxide Moderator Material
- 1 October 1966
- journal article
- research article
- Published by Taylor & Francis in Nuclear Applications
- Vol. 2 (5) , 394-401
- https://doi.org/10.13182/NT66-A27616
Abstract
The release of the reactor poison 6Li from irradiated BeO has been studied at 1000 to 1600°C. Release was found to be diffusion controlled, and diffusion coefficients were determined. The activation energy for diffusion was found to be 54 kcal/mole. It is tentatively proposed that 6Li diffuses in irradiated BeO by a cation vacancy mechanism. A large fractional release (99%) is estimated for the release of 6Li from BeO (corresponding to the BeO granules tested) in a reactor with a moderator temperature of 1000°C. The feasibility of reprocessing “burnt-up” BeO moderator by a high-temperature treatment was investigated and found to be promising.Keywords
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