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Oral presentation

Measurement test of non-destructive assay for quantification of nuclear materials in fuel debris, 1; Background and purpose

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

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no abstracts in English

Oral presentation

Non-destructive experiments for accounting nuclear material in fuel debris, 2; Detection of gamma rays from capture reaction of plutonium

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

no journal, ,

no abstracts in English

Oral presentation

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*

no journal, ,

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.