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塑料闪烁体的闪烁时间特性 被引量:3

Decay time characteristics of plastic scintillator
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摘要 采用137Cs激发塑料闪烁体发光,应用单光子计数法测量塑料闪烁体发光衰减曲线。根据测量原理搭建了实验平台,测量了ST401和EJ232两种闪烁体的闪烁时间特性。实验结果用双指数拟合法进行分析可得,ST401发光衰减常数为2.9 ns和50 ns,EJ232发光衰减常数为1.6 ns和30 ns。实验平台所测幅度动态范围大于104,时间分辨小于0.8 ns。从统计学分析单光子计数法的物理过程,并采用蒙特卡罗方法模拟整个探测过程,探讨单光子计数法的适用条件。实验结果与数值模拟结果相洽。若终止探测器平均探测到的光子数不大于0.1,则多道测量结果可以近似为塑料闪烁体发光衰减曲线。 Background: The plastic scintillator is mostly used for the inertia confinement fusion determination systems. It is necessary to know the scintillator decay time. Purpose: The aim is to measure the decay time of the plastic scintillator and analyze the applicability of single photon method. Method: The plastic scintillator is excited by 137Cs, and the decay time of the plastic scintillator is measured by single photon method. The ST401 and EJ232 plastic scintillators are measured by this device. The theory of single photon method is analyzed via statistics and the measurement process is simulated by Monte Carlo method. Results: The results are 2.9 ns with 50 ns for ST401 and 1.6 ns with 30 ns for EJ232 via double exponential fitting. The device has a dynamic range of over 104 and an intrinsic time resolution under 0.8 ns. The experiment result agrees to the simulated one. Conclusion: The comparison between the experiment result and the simulation result indicates that with the mean counts of stop detector no more than 0.1, the result measured by single photon method can be approximated to the decay time of plastic scintillator.
出处 《核技术》 CAS CSCD 北大核心 2015年第6期43-47,共5页 Nuclear Techniques
基金 中国工程物理研究院科学技术发展基金(No.2013B0102008)资助
关键词 塑料闪烁体 闪烁时间特性 单光子计数法 蒙特卡罗方法 Plastic scintillator, Flashing time characteristics, Single photon counting method, Monte Carlo method CLC TL812
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  • 1蒋海音,王德武,刘建飞,吴忠华,谢亚宁,顾牡,陈玲燕.用北京同步辐射光源研究氟化物闪烁体的荧光时间衰减特性[J].高能物理与核物理,1996,20(12):1103-1109. 被引量:6
  • 2宁家敏,蒋世伦,徐荣昆,郭存.强脉冲软X光辐照薄塑料闪烁体发光特性研究[J].强激光与粒子束,2006,18(7):1215-1218. 被引量:14
  • 3张建华,彭太平,胡孟春,王振通,赵广军.YAP:Ce闪烁晶体的光致激发荧光衰减常数测量[J].人工晶体学报,2006,35(5):1057-1060. 被引量:5
  • 4J. D. Lindl, P. Amendt, R. L. Bergeret al.. The physics basis for ignition using indirect-drive targets on the National Ignition Facility[J]. Phys. Plasmas, 2004, 11(2): 339-491.
  • 5C. Stoeckl, V. Y. Glebov, S. Roberts et al.. Ten inch manipulator-based neutron temporal diagnostic for cryogenic experiments on OMEGA[J]. Rev. Scient. Instrum. , 2003, 74 (3), 1713-1716.
  • 6R. A. Lerche, M. D. Cable. Fusion reaction-rate measurement- Nova andNIF[R]. UCRLLR-105821 96-3,1996, 115-122.
  • 7R. A. Lerche, D. W. Phillion, G. L. Tietbohl. 25 ps neutron detector for measuring ICF-target burn history[J]. Rev. Sci. Instrum., 1995, 66(1): 933-935.
  • 8王吉元,1982年
  • 9团体著者
  • 10Lin Jiuling.Time-correlated single photon counting spectroscopy method I.Statistical time characteristic [J].Spectro scopy and Spectroscopic Analysis,1996,16(6): 14-17 (in Chinese).

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