| Project/Area Number |
26630483
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Nuclear engineering
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| Research Institution | Tokyo Institute of Technology |
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Principal Investigator |
Nishiyama Jun 東京工業大学, 科学技術創成研究院, 助教 (70512680)
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2015: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2014: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
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| Keywords | 原子力電池 / ポロニウム / プルトニウム / 放射性同位体製造 / ポロニウム-209 / プルトニウム-238 / 同位体製造 / 鉛ビスマス |
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| Outline of Final Research Achievements |
This study aims to evaluate the performance of Po isotopes as a radioisotope fuel for use in space radioisotope power generators. Historically, plutonium-238 has been proven to be the best radioisotope for the provision of space nuclear power. However, current concerns over the limited supply and difficult treatment of Pu-238 have increased the need to explore alternative isotopes for space nuclear power applications. Polonium-209 has the possibility to be an alternative material of Pu-238. It has enough half-life of 102 years and the specific power of 490 W/kg. The production rate using the Bi-209 (p, n)Po-209 reaction and the reaction chain of Bi-209 (n, γ)Bi-210 (β decay) Po-210 (n, 2n)Po-209 were estimated.
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