2016 Fiscal Year Final Research Report
Study of energy analytic type gamma-ray dose rate meter for appropriate nuclear reactor decommissioning process
| Project/Area Number |
26870524
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Risk sciences of radiation and chemicals
General applied physics
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| Research Institution | Tohoku Institute of Technology |
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Principal Investigator |
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| Research Collaborator |
Hitomi Keitaro 東北大学, サイクロトロンラジオアイソトープセンター, 准教授 (60382660)
Orihara Hikonojo 東北大学, サイクロトロンラジオアイソトープセンター, 名誉教授 (00004432)
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Keywords | ガンマ線検出器 / 臭化タリウム / 半導体検出器 / 原発廃炉作業 / 結晶育成 / エネルギー分析 |
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| Outline of Final Research Achievements |
Constructing reactor decommissioning technique is indispensable matter associated with Japan’s energy policy. Safety precaution for environment and worker should be ensured by monitoring radiation dose in the nuclear plant. In this study, a semiconductor gamma-ray dose rate meter with energy analytic type has been developed using thallium bromide (TlBr) semiconductor crystals characterized with high gamma-ray interaction efficiency. Semiconductor production process for TlBr crystal with suitable detector performance was constructed by considering material purification method and crystal growth method. TlBr gamma-ray detectors fabricated from grown in this study was successfully realized high energy resolution for gamma-rays from a 137Cs radioactive source.
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| Free Research Field |
放射線計測
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