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arXiv 2405.15366nucl-exhep-ex
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在30 MeV和250 MeV下中子与${}^{16}$O相互作用产生的$γ$射线的测量

Measurement of $γ$-rays generated by neutron interaction with ${}^{16}$O at 30 MeV and 250 MeV

T. Tano, T. Horai, Y. Ashida, Y. Hino, F. Iacob, A. Maurel, M. Mori, G. Collazuol, A. Konaka, Y. Koshio, T. Nakaya, T. Shima, R. Wendell

AI总结:

本研究在大阪大学核物理研究中心利用准单能中子束和高纯锗探测器测量了30 MeV和250 MeV中子与${}^{16}$O反应产生的$γ$射线截面,为水切伦科夫实验中的中子模型验证提供了关键数据。

摘要:

深入理解水中快中子反应产生的$γ$射线对于大型水切伦科夫探测器中的各种物理研究至关重要。我们在大阪大学核物理研究中心使用准单能中子束($E_n = 30$和250 MeV)进行了测试实验,利用高纯锗探测器测量源自中子-氧反应的$γ$射线。成功观测到多个预期来自中子-氧反应后激发核的$γ$射线峰。我们使用液体闪烁体测量了中子束通量,以用于截面测量。通过基于定制$γ$射线信号和背景模板的谱拟合分析,我们测量了每个观测到的$γ$射线成分的截面。这些结果将有助于验证正在进行和未来水切伦科夫实验中所采用的中子模型。

英文摘要:

Deep understanding of $γ$-ray production from the fast neutron reaction in water is crucial for various physics studies at large-scale water Cherenkov detectors. We performed test experiments using quasi-mono energetic neutron beams ($E_n = 30$ and 250~MeV) at Osaka University's Research Center for Nuclear Physics to measure $γ$-rays originating from the neutron-oxygen reaction with a high-purity germanium detector. Multiple $γ$-ray peaks which are expected to be from excited nuclei after the neutron-oxygen reaction were successfully observed. We measured the neutron beam flux by using a liquid scintillator for the cross section measurement. With a spectral fitting analysis based on the tailored $γ$-ray signal and background templates, we measured cross sections for each observed $γ$-ray component. The results will be useful to validate neutron models employed in the on-going and future water Cherenkov experiments.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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