A Scintillation Detector for the Measurement of Thermal Neutrons in Subcritical Assembly
スポンサーリンク
概要
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With the view toward measuring neutron flux in a subcritical assembly, a detector consisting of a γ-ray insensitive scintillator based on <SUB>6</SUB>LiF, ZnS(Ag) and polyethylene combined with a long light guide has been developed. A description is given of performance obtained with this detector, in comparison with BF3 counters and glass scintillator. It has proved that the newly deviced detector with 16 mm diam.×0.42 mm thick scintillator is almost comparable in detection efficiency to a BF<SUB>3</SUB> gas filled counter (40 cmHg, 96% <SUB>10</SUB>B) having the effective dimensions of 16 mmdiam.×70 mm. The fine spatial resolution obtained with the detector is demonstrated by actual measurements of neutron flux distribution in the assembly.
- 一般社団法人 日本原子力学会の論文
著者
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TOJO Takao
Japan Atomic Energy Research Institute
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NAKAJIMA Tadashi
Japan Atomic Energy Research Institute
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KONDO Makoto
Japan Atomic Energy Research Institute
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NIWA Takeo
Japan Atomic Energy Research Institute
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- A Scintillation Detector for the Measurement of Thermal Neutrons in Subcritical Assembly