Novel liquid scintillator radon detector  

作　　者：Junjie Li Xilei Sun Jiaxuan Ye Baohua Qi Xin Ling Yong Deng Dejing Du Xiaoxue Fan Fengbo Gu Xiaohui Qi Huan Jiang Chenger Wang Zhihang Zhu Guopu Qu 

机构地区：[1]School of Nuclear Science and Technology,University of South China,Hengyang 421001,China [2]Institute of High Energy Physics,Chinese Academy of Sciences(CAS),Beijing 100049,China [3]State Key Laboratory of Particle Detection and Electronics,Institute of High Energy Physics,CAS,Beijing 100049,China [4]University of Chinese Academy of Sciences,Beijing 100049,China [5]Beijing Key Laboratory of Passive Safety Technology for Nuclear Energy,School of Nuclear Science and Engineering,North China Electric Power University,Beijing 102206,China [6]School of Information Engineering,Jiangxi University of Science and Technology,Ganzhou 341000,China [7]National Engineering Research Center for Rare Earth Materials,General Research Institute for Nonferrous Metals,Beijing 100088,China

出　　处：《Radiation Detection Technology and Methods》2022年第3期294-301,共8页辐射探测技术与方法（英文）

基　　金：supported by the National Natural Science Foundation of China(11775252).

摘　　要：Purpose Radon is a noble gas,which endangers our health.The liquid scintillator is one of the detector materials used to measure radon in the environment.But there are challenges in measuring radon using a liquid scintillator,such as independent manual operation and long measurement periods.Methods and Results We propose a liquid scintillator detector for the rapid measurement of radon,which is composed of a breathable liquid scintillator probe and photomultiplier tube.Cascade decay recognition and pulse shape discrimination(PSD)were used to select radon events.241 Am4(α)and 90Sr(β)source calibration was used to optimize the PSDfigure of merit of the liquid scintillator,and a 232Th(220Rn)diffusion source was used to verify the function of this novel detector for measuring radon.Conclusion The detector had an integrated design for sampling and measurement,which simplified the measurement steps.Thus,this novel liquid scintillator detector demonstrated promise for use in radon-detection systems.

关 键 词：RADON Liquid scintillator Pulse shape discrimination Breathable membrane 

分 类 号：O57[理学—粒子物理与原子核物理]