2022 Fiscal Year Final Research Report
Development of a semiconducting diamond for neutron imaging
Project/Area Number |
20K14776
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Research Category |
Grant-in-Aid for Early-Career Scientists
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Allocation Type | Multi-year Fund |
Review Section |
Basic Section 21050:Electric and electronic materials-related
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Research Institution | Shizuoka University |
Principal Investigator |
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Project Period (FY) |
2020-04-01 – 2023-03-31
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Keywords | ダイヤモンド / 放射線センサ / 中性子 / ホウ素添加ダイヤモンド |
Outline of Final Research Achievements |
A diamond neutron detector that consists of neutron-capture layer and signal collection layer has been developed. Two of the research objectives have been achieved: demonstration of neutron detection using boron-doped diamond layer, as well as reduction of dark current in the detector by boron-nitrogen double doping. Following three research goals have been achieved: (1)synthesis and characterization of functional diamond, (2)development of sensor fabrication process.(3)demonstration of neutron detection. In addition, a new operation model of neutron sensor that improves neutron sensitivity, has been newly discovered. Reduction of dark current in sensor has been realized by boron-nitrogen double doping.
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Free Research Field |
半導体工学、炭素系材料
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Academic Significance and Societal Importance of the Research Achievements |
本研究により,積層型ダイヤモンド中性子センサを試作し,中性子検出の実証に成功した.さらに,積層構造により,構想時の予想を超えてセンサの感度を向上できる新しい動作モデルを見出した. 中性子センサの高感度化により可搬型中性子イメージングが実現すれば,中性子捕獲療法の際の人体被曝量モニタリングや,金属ケース内の爆薬などの検出が容易になり,社会の安全・安心を支える基盤技術となる非破壊検査技術が実現できる.
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