Comparison of thermal neutron detection efficiency of 6Li scintillation glass and 3He gas proportional tube

被引：5
作者：
Xu Ming [1 ,2 ]
Tang Zhi-Cheng [1 ]
Chen Guo-Ming [1 ]
Tao Jun-Quan [1 ]
机构：
[1] Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China
[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
来源：
CHINESE PHYSICS C | 2013年 / 37卷 / 10期
基金：
中国国家自然科学基金;
关键词：
thermal neutron; detection efficiency; Li-6 incorporated scintillation glass; He-3 gas proportional tube; flash ADC; GEANT4;
D O I：
10.1088/1674-1137/37/10/106001
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
We report on a comparison study of the He-3 gas proportional tube and the Li-6 incorporated scintillation glasses on thermal neutron detection efficiency. Both He-3 and Li-6 are used commonly for thermal neutron detection because of their high neutron capture absorption coefficient. By using a neutron source Cf-252 and a paraffin moderator in an alignment system, we can get a small beam of thermal neutrons. A flash ADC is used to measure the thermal neutron spectrum of each detector, and the detected number of events is determined from the spectrum, then we can calculate the detection efficiency of different detectors. Meanwhile, the experiment has been modeled with GEANT4 to validate the results against the Monte Carlo simulation.
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页数：6
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