Measurement test of non-destructive assay for quantification of nuclear materials in fuel debris, 5; In-situ passive gamma-ray measurement for plutonium item using a CeBr detector

Kaburagi, Masaaki ; Shiba, Tomooki ; Okumura, Keisuke ; Nauchi, Yasushi*; Suzuki, Risa; Nomi, Takayoshi ; Nagatani, Taketeru ; Takada, Akira*; Kosuge, Yoshihiro*

The passive gamma-ray spectroscopy for plutonium nuclear fuels was performed using a small volume CeBr $_{3}$ detector specific to high dose-rate measurements. This presentation reports that the wide energy range of gamma-ray spectra was obtained by the spectroscopy, and the energy range covered the principal gamma-decay lines of 59.5 keV emitted from $^{241}$ Am and 2615 keV emitted from $^{208}$ Tl, which is a descendant nuclide of $^{236}$ Pu, comparing the measurements using HPGe.

Language	:	Japanese
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Meeting title	:	日本原子力学会2021年秋の大会
Held date	:	2021/09
Location (city)	:	札幌(online)
Location (country)	:	日本
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Keywords	:	福島第一原子力発電所; 燃料デブリ; パッシブガンマ法; CeBr $_{3}$ シンチレーター; 核燃料物質定量; プルトニウム燃料技術開発センター; 福島第一原子力発電所事故; Fukushima Daiichi Nuclear Power Station Accident
Research Facility	:	プルトニウム燃料製造施設
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Article of JAEA R&D Review	:
Cooperating Institute	:	NESI; 電力中央研究所

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Registration No. : BB20210310
JAEA Abstracts No. :
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