| Project/Area Number |
20560773
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Nuclear engineering
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| Research Institution | Kyoto University |
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Principal Investigator |
XU Qiu Kyoto University, 原子炉実験所, 准教授 (90273531)
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| Co-Investigator(Kenkyū-buntansha) |
YOSHIIE Tosimasa 京都大学, 原子炉実験所, 教授 (20124844)
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| Project Period (FY) |
2008 – 2010
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| Project Status |
Completed (Fiscal Year 2010)
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| Budget Amount *help |
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2010: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2009: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2008: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
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| Keywords | 原子力材料 / 核燃料 / 原子炉圧力容器 / Fe-Cu合金 / 陽電子寿命 / 中性子照射 / 原子空孔集合体 / 銅の析出物 / プロトン照射 / 電子線照射 |
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| Research Abstract |
The formation of Cu precipitates and point defect clusters was investigated in two Fe-Cu binary model alloys, Fe-0.3Cu and Fe-0.6Cu, irradiated at 573 K at three different damage rates, namely 3.8×10^<-10>, 1.5×10^<-8> and 5×10^<-8> pa (displacements per atom)/s, up to about 1.6×10^<-2> dpa. Results of positron annihilation experiments indicated that Cu precipitates were formed in these irradiations with different damage rates. The growth of Cu precipitates does not increase monotonously with increasing irradiation dose, but it rather depends on the nucleation and growth of microvoids. It is also clear that the nucleation and growth of microvoids are influenced by the irradiation dose rate.
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