2016 Fiscal Year Final Research Report
On-site radioactivity measurement instrument for pure beta emitter
| Project/Area Number |
26709074
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| Research Category |
Grant-in-Aid for Young Scientists (A)
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| Allocation Type | Partial Multi-year Fund |
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| Research Field |
Nuclear engineering
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| Research Institution | National Institute of Advanced Industrial Science and Technology |
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Principal Investigator |
Unno Yasuhiro 国立研究開発法人産業技術総合研究所, 分析計測標準研究部門, 主任研究員 (90462837)
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Keywords | 放射能測定 / 放射性ストロンチウム / 放射性セシウム / 純ベータ核種 / シンチレータ / 光電子増倍管 / 不確かさ / 検出限界 |
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| Outline of Final Research Achievements |
A measurement instrument for immediate response to affairs in which people have concern for spread of contamination by pure-beta emitter such as Sr/Y-90 was developed, especially in case of low-level radioactivity concentration. As a component of the instrument, a small-size plastic scintillation detector for beta ray counting was used in evaluation. Coupled with the beta ray detector, a through-hole type NaI(Tl) scintillation detector was manufactured. Measurement accuracy, precision and minimum detectable activity were estimated in measurement for actual results using a mock source. A simulation technique was built up to estimate efficiency of these detectors for counting beta and gamma ray from radioisotopes.
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| Free Research Field |
総合工学・原子力学
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