Evaluation of annealing effect on MA-bearing MOX pellet with lattice defect

Hirooka, Shun ; Kato, Masato ; Komeno, Akira ; Sunaoshi, Takeo*

MA-bearing MOX pellets with lattice defect accumulated by alpha decay were annealed. The decreased density due to the lattice defect was recovered. However, the density started to decrease again above 1300 $^{circ}$ C. Ceramography of the annealed pellets showed that the density decrease was attributed by helium pores formed along grain.

Language	:	Japanese
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Meeting title	:	日本原子力学会2019年春の年会
Held date	:	2019/03
Location (city)	:	水戸
Location (country)	:	日本
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Keywords	:	アルファ崩壊; 格子欠陥; マイナーアクチニド; MOX; ヘリウムポア
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Registration No. : BB20181918
JAEA Abstracts No. :
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