Developments of a LaBr$$_3$$ scintillation detector system for neutron resonance densitometry (NRD)
小泉 光生; 土屋 晴文; 北谷 文人; 原田 秀郎 ; 高峰 潤; 呉田 昌俊; 瀬谷 道夫; 木村 敦; 飯村 秀紀; Becker, B.*; Kopecky, S.*; Mondelaers, W.*; Schillebeeckx, P.*
Koizumi, Mitsuo; Tsuchiya, Harufumi; Kitatani, Fumito; Harada, Hideo; Takamine, Jun; Kureta, Masatoshi; Seya, Michio; Kimura, Atsushi; Iimura, Hideki; Becker, B.*; Kopecky, S.*; Mondelaers, W.*; Schillebeeckx, P.*
Neutron resonance densitometry (NRD) has been proposed as a method to quantify the amount of special nuclear materials in particle-like debris of melted fuel. The requirements of a $$gamma$$-ray detector system for the NRD measurements are: (1) good energy resolution to identify elements (2) fast response not to be suffocated by the radiation from debris samples and (3) good signal to noise ratio. The quantification of $$^{10}$$B is considered to be the most important for NRD because of its very large neutron cross-sections. However, the Compton peak of the $$gamma$$ rays from $$^{137}$$Cs, which is probably the strongest radioactivity in debris, overlaps the $$^{10}$$B $$gamma$$ peak; and it makes the measurements difficult. We, therefore, designed a well-type LaBr$$_{3}$$ scintillation spectrometer to reduce the Compton peak. The progress of the research and development of the spectrometer is reported.
使用言語 : English
掲載資料名 : Proceedings of INMM 55th Annual Meeting (Internet)
ページ数 : 7 Pages
発行年月 : 2014/07
出版社名 :
発表会議名 : INMM 55th Annual Meeting
開催年月 : 2014/07
開催都市 : Atlanta
開催国 : U. S. A.
特許データ :
論文URL :
キーワード : 福島第一原子力発電所事故; Fukushima Daiichi Nuclear Power Station Accident
使用施設 :
広報プレスリリース :
受委託・共同研究相手機関 : EC-JRC-IRMM
登録番号 : BB20133357
抄録集掲載番号 : 42001206
論文投稿番号 : 14850
Accesses  (From Jun. 2, 2014)
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