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Photofission and photoneutron cross sections for $$^{238}$$U and $$^{232}$$Th

$$^{238}$$Uと$$^{232}$$Thの光子入射核分裂および光子入射中性子放出断面積

Filipescu, D.*; 西尾 勝久   ; 洲嵜 ふみ  ; 廣瀬 健太郎  ; 他12名*

Filipescu, D.*; Nishio, Katsuhisa; Suzaki, Fumi; Hirose, Kentaro; 12 of others*

Photofission and photoneutron reactions on $$^{238}$$U and $$^{232}$$Th in the energy range of 5.87 MeV - 20.14 MeV was carried out at the Compton-scattering $$gamma$$-ray source of the NewSUBARU synchrotro radiation facility of SPring-8, Japan. The neutron-multiplicity sorting of high-multiplicity fission neutron coincidence events has been performed using a dedicated energy dependent, multiple firing statistical treatment. The photoneutron ($$gamma$$,xn) and photofission ($$gamma$$,fxn) reactions have been discriminated by considering a Gaussian distribution of prompt-fission-neutrons (PFN) multiplicities predicted by the evaporation theory. We here provide preliminary experimental ($$gamma$$, n), ($$gamma$$, 2n) and ($$gamma$$, F) cross sections, average energies of PFN and of photoneutrons emitted in ($$gamma$$, n) and ($$gamma$$, 2n) reactions, as well as the mean number of PFN per fission.

発表言語

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English

掲載資料名

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EPJ Web of Conferences

巻

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284

号

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ページ数

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p.04010_1 - 04010_4

発行年月

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2023/05

発表会議名

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15th International Conference on Nuclear Data for Science and Technology (ND2022)

開催年月

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2022/07

開催都市

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Sacramento (online)

開催国

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U.S.A.

キーワード

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光入射核分裂断面積; 光入射中性子放出断面積; NewSUBARU

特許データ

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PDF

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論文URL

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https://doi.org/10.1051/epjconf/202328404010

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
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受委託・共同研究相手機関

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Access

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- Accesses

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