Study of the response of 10B-doped MCP to wide-energy range neutrons from eV to MeV

IF 3.6 1区 物理与天体物理 Q1 NUCLEAR SCIENCE & TECHNOLOGY Nuclear Science and Techniques Pub Date : 2024-08-07 DOI:10.1007/s41365-024-01516-z
Qiang Li, Li-Jiao Wang, Xiang-Biao Qiu, Jing-Wen Li, Wei Xu, Tao Li, Ze-Bin Lin, Chang-Jun Ning, Yong-Hao Chen, Rui-Rui Fan, Kang Sun, Jing-Yu Tang, Rong Zhang, Han-Tao Jing, Bo Mei, Qi An, Hao-Fan Bai, Jiang-Bo Bai, Jie Bao, Ping Cao, Qi-Ping Chen, Zhen Chen, Zeng-Qi Cui, An-Chuan Fan, Chang-Qing Feng, Fan-Zhen Feng, Ke-Qing Gao, Min-Hao Gu, Chang-Cai Han, Zi-Jie Han, Guo-Zhu He, Yong-Cheng He, Yang Hong, Yi-Wei Hu, Han-Xiong Huang, Wei-Hua Jia, Hao-Yu Jiang, Wei Jiang, Zhi-Jie Jiang, Zheng-Yao Jin, Ling Kang, Bo Li, Chao Li, Gong Li, Jia-Wen Li, Xiao Li, Yang Li, Jie Liu, Rong Liu, Shu-Bin Liu, Guang-Yuan Luan, Bin-Bin Qi, Jie Ren, Zhi-Zhou Ren, Xi-Chao Ruan, Zhao-Hui Song, Zhi-Xin Tan, Sheng-Da Tang, Peng-Cheng Wang, Zhao-Hui Wang, Zhong-Wei Wen, Xiao-Guang Wu, Xuan Wu, Li-Kun Xie, Yi-Wei Yang, Han Yi, Yong-Ji Yu, Guo-Hui Zhang, Lin-Hao Zhang, Mo-Han Zhang, Qi-Wei Zhang, Xian-Peng Zhang, Yu-Liang Zhang, Yue Zhang, Zhi-Yong Zhang, Mao-Yuan Zhao, Lu-Ping Zhou, Zhi-Hao Zhou, ..
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Abstract

Neutron-sensitive microchannel plates (nMCPs) have applications in neutron detection, including energy spectrum measurements, neutron-induced cross sections, and neutron imaging. \({}^{10}\)B-doped MCPs (B-MCPs) have attracted significant attention owing to their potential for exhibiting a high neutron detection efficiency over a large neutron energy range. Good spatial and temporal resolutions are useful for neutron energy-resolved imaging. However, their practical applications still face many technical challenges. In this study, a B-MCP with 10 mol% \({}^{10}\)B was tested for its response to wide-energy neutrons from eV to MeV at the Back-n white neutron source at the China Spallation Neutron Source. The neutron detection efficiency was calibrated at 1 eV, which is approximately 300 times that of an ordinary MCP and indicates the success of \({}^{10}\)B doping. The factors that caused the reduction in the detection efficiency were simulated and discussed. The neutron energy spectrum obtained using B-MCP was compared with that obtained by other measurement methods, and showed very good consistency for neutron energies below tens of keV. The response is more complicated at higher neutron energy, at which point the elastic and nonelastic reactions of all nuclides of B-MCP gradually become dominant. This is beneficial for the detection of neutrons, as it compensates for the detection efficiency of B-MCP for high-energy neutrons.

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研究掺杂 10B 的 MCP 对从 eV 到 MeV 的宽能量范围中子的响应
中子敏感微通道板(nMCPs)可应用于中子探测,包括能谱测量、中子诱导截面和中子成像。\掺杂({}^{10}\)B 的微通道板(B-MCPs)因其在较大的中子能量范围内具有较高的中子探测效率而备受关注。良好的空间和时间分辨率对于中子能量分辨成像非常有用。然而,其实际应用仍面临许多技术挑战。在这项研究中,在中国溅射中子源的Back-n白中子源上测试了含有10 mol% \({}^{10}\)B 的B-MCP对从eV到MeV的宽能中子的响应。中子探测效率标定为1eV,约为普通MCP的300倍,表明\({}^{10}\)B掺杂成功。模拟并讨论了导致探测效率降低的因素。将使用 B-MCP 获得的中子能谱与其他测量方法获得的中子能谱进行了比较,结果表明,在中子能量低于数十千伏时,两者的一致性非常好。中子能量越高,反应越复杂,此时 B-MCP 所有核素的弹性和非弹性反应逐渐成为主导。这有利于中子的探测,因为它弥补了 B-MCP 对高能中子的探测效率。
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来源期刊
Nuclear Science and Techniques
Nuclear Science and Techniques 物理-核科学技术
CiteScore
5.10
自引率
39.30%
发文量
141
审稿时长
5 months
期刊介绍: Nuclear Science and Techniques (NST) reports scientific findings, technical advances and important results in the fields of nuclear science and techniques. The aim of this periodical is to stimulate cross-fertilization of knowledge among scientists and engineers working in the fields of nuclear research. Scope covers the following subjects: • Synchrotron radiation applications, beamline technology; • Accelerator, ray technology and applications; • Nuclear chemistry, radiochemistry, radiopharmaceuticals, nuclear medicine; • Nuclear electronics and instrumentation; • Nuclear physics and interdisciplinary research; • Nuclear energy science and engineering.
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