Relationship between shape of negative crystal in helium infused UO $_{2}$ and its inner pressure

Matsunaga, Junji*; Kashibe, Shinji*; Serizawa, Hiroyuki ; Nakajima, Kunihisa ; Iwai, Takashi; Haga, Yoshinori ; Oishi, Yuji*; Yamanaka, Shinsuke*

In the present study, the helium infusion were conducted at high temperature with highly pressurized helium for both UO $_{2}$ . Following a high temperature treatment, the negative crystal formed in the sample was examined by FE-SEM. The SEM image was analyzed to measure the area of the surface on the negative crystal which is composed of facetted lattice planes. It was confirmed that the shape of the negative crystal formed in this method is deviated from the equilibrium shape reported previously, which means that the higher inner pressure produced by the helium precipitated in the cavity relate to the shape of the negative crystal.

Language	:	Japanese
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Meeting title	:	日本原子力学会2012年秋の大会
Held date	:	2012/09
Location (city)	:	東広島
Location (country)	:	日本
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Keywords	:	no keyword
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Article of JAEA R&D Review	:
Cooperating Institute	:	日本核燃料開発; 大阪大学

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Registration No. : BB20120428
JAEA Abstracts No. :
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Relationship between shape of negative crystal in helium infused UO and its inner pressure

Relationship between shape of negative crystal in helium infused UO $_{2}$ and its inner pressure