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Measurement of the prompt fission $$gamma$$-rays from slow neutron-induced fission of $$^{235}$$U with STEFF

Wright, T.*; 原田 秀郎   ; 木村 敦   ; 他121名*

Wright, T.*; Harada, Hideo; Kimura, Atsushi; 121 of others*

The average energy and multiplicity of prompt $$gamma$$-rays from slow neutron-induced fission of $$^{235}$$U have been measured using the STEFF spectrometer at the neutron time-of-flight facility n_TOF. The individual responses from 11 NaI scintillators were corrected for multiple $$gamma$$-ray interactions, prompt fission neutrons and background counts before being deconvolved to estimate the emitted spectrum of prompt fission $$gamma$$-rays. The results give an average $$gamma$$-ray energy $$bar{E}_{gamma}$$ of 1.71(5) MeV and multiplicity $$bar{nu}_{gamma}$$ of 2.66(18) considering $$gamma$$-rays emitted within the energy range from 0.8 to 6.8 MeV. The n_TOF data has a slightly larger $$bar{E}_{gamma}$$ and smaller $$bar{nu}_{gamma}$$ than other recent measurements, however the product of the two is in agreement within the quoted uncertainties.

発表言語

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English

掲載資料名

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European Physical Journal A

巻

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60

号

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3

ページ数

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p.70_1 - 70_11

発行年月

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2024/03

発表会議名

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開催年月

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開催都市

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開催国

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キーワード

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Prompt fission gamma-rays; Average energy; Multiplicity; $$^{235}$$U

特許データ

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PDF

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論文URL

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https://doi.org/10.1140/epja/s10050-024-01277-8

研究データの公開先DOI

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本成果にかかわる研究データのリンクです。

使用施設

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広報プレスリリース

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論文解説記事
(成果普及情報誌)

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受委託・共同研究相手機関

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CERN

Access

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- Accesses

InCites™

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パーセンタイル：0.00

分野：Physics, Nuclear

Altmetrics

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