| Budget Amount *help |
¥19,240,000 (Direct Cost: ¥14,800,000、Indirect Cost: ¥4,440,000)
Fiscal Year 2011: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2010: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2009: ¥10,400,000 (Direct Cost: ¥8,000,000、Indirect Cost: ¥2,400,000)
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| Research Abstract |
The preexisting models for describing the process of radiation damage due to high-energy fission fragments in UO_2 is reexamined by experimentally simulating the radiation damage process by means of a high-energy ion accelerator. The experimental basis for the simulation is constructed, fundamental radiation damage data are obtained for ion-irradiated UO_2, method for the prediction of radiation damage especially in high-energy regime is proposed, and the formation mechanism for rim-structure formed in high burn-up fuels is examined. The limitation of preexisting models is clarified, and the process which should be taken into account for the modification of the models is proposed.
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