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arXiv 0811.0735hep-ex
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水切伦科夫探测器中子示踪的初步研究

First Study of Neutron Tagging with a Water Cherenkov Detector

Kamiokande Collaboration, H. Watanabe, H. Zhang

摘要:

第一项中子标记研究是在一个5万吨水切伦科夫探测器Super Kamiokande中进行的。在0.2%GdCl $_{3}$ -水溶液和纯水中评估了热中子的标记效率。它们被确定为,分别为66.7%,为3 MeV以上的事件和20%,相应的背景概率为2 $\times$ 10 $^{-4}$和3 $\times$ 10 $^{-2}$。这种新开发的技术可能使水切伦科夫探测器能够识别$\bar ν_{e}$的地质或天体物理来源,以及通过延迟符合方案由商业反应堆产生的来源。

英文摘要:

A first study of neutron tagging is conducted in Super--Kamiokande, a 50,000-ton water Cherenkov detector. The tagging efficiencies of thermal neutrons are evaluated in a 0.2 % GdCl$_{3}$-water solution and pure water. They are determined to be, respectively, 66.7 % for events above 3 MeV and 20 % with corresponding background probabilities of 2 $\times$ 10$^{-4}$ and 3 $\times$ 10$^{-2}$. This newly developed technique may enable water Cherenkov detectors to identify $\bar ν_{e}$'s geological or astrophysical sources as well as those produced by commercial reactors via the delayed coincidence scheme.

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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