闪烁体
中子
噪音(视频)
物理
对偶(语法数字)
单晶
核物理学
光学
Crystal(编程语言)
材料科学
核磁共振
探测器
计算机科学
人工智能
艺术
文学类
图像(数学)
程序设计语言
作者
Qisheng Sun,Zirui Hao,Jing Li,Zheyuan Liu,Hongwei Wang,Xiaotao Zhang,Liqiang Li,Huanli Dong,Wenping Hu
出处
期刊:Matter
[Elsevier]
日期:2023-01-01
卷期号:6 (1): 274-284
被引量:6
标识
DOI:10.1016/j.matt.2022.10.010
摘要
Summary
Extensive fast-neutron-based applications and radiation monitoring are inseparable from fast-neutron detection, but the interference of accompanying γ rays requires fast-neutron/γ discrimination (FNGD). Organic single-crystal scintillators (OSCSs) generate fast-neutron-induced delayed fluorescence and γ-induced prompt fluorescence (PF), which can be discriminated by one-step pulse-shape discrimination (PSD). However, PSD cannot identify neutron-induced PF, introducing errors in neutron counting. Here, we report a dual-discrimination approach for accurate fast-neutron detection using γ-ray-insensitive tetraphenylethylene (TPE). In contrast to previous OSCSs, TPE realizes FNGD by PSD and pulse-height discrimination (PHD), since it simultaneously exhibits disparities in shape and pulse height under neutron and γ irradiation. PHD enables secondary FNGD from PF, significantly increasing neutron counts. The improved FNGD method based on TPE reveals a high figure of merit (FoM = 2.4) and count rate of neutrons (35.5%). Our research provides new ideas and available materials for high-efficiency FNGD, promoting the applications of fast neutrons.
科研通智能强力驱动
Strongly Powered by AbleSci AI