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Report No.
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Development of advanced neutron multipliers for DEMO blankets

Nakamichi, Masaru; Kim, Jae-Hwan

Advanced neutron multipliers and tritium breeders with higher stability at high temperature are desired. Beryllide is one of candidates for the advanced neutron multipliers. To fabricate the beryllide pebbles, a rotating electrode method (REM) was selected. Beryllide electrode fro the REM is necessary. Beryllide electrode has been successfully fabricated by the plasma sintering method. The prototypic beryllide pebbles were successfully fabricated by the REM using this plasma-sintered beryllide electrode. As a advanced tritium breeder, Li$$_{2}$$TiO$$_{3}$$ with excess Li (Li$$_{2+x}$$TiO$$_{3+y}$$) is one of the candidates. For raw material fabarication, synthesis process of Li$$_{2+x}$$TiO$$_{3+y}$$ powder has been developed by the solid phase reaction. From the granulation result by the emulsion method using this raw material, the prototypic pebbles of the Li$$_{2+x}$$TiO$$_{3+y}$$ with less than 5$$mu$$m in grain size and high sphericity, were successfully fabricated.

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Category:Nuclear Science & Technology

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