Study of n-γ discrimination in low energy range (above 40 keVee) by charge comparison method with a BC501A liquid scintillation detector

被引：11

作者：

Chen Yong-Hao ^{[1
,2
]}

Chen Xi-Meng ^{[1
]}

Zhang Xiao-Dong ^{[1
]}

Lei Jia-Rong ^{[2
]}

An Li ^{[2
]}

Shao Jian-Xiong ^{[1
]}

Zheng Pu ^{[2
]}

Wang Xin-Hua ^{[2
]}

Zhu Chuan-Xin ^{[2
]}

He Tie ^{[2
]}

Yang Jian ^{[2
]}

机构：

[1] Lanzhou Univ, Sch Nucl Sci & Technol, Lanzhou 730000, Peoples R China

[2] China Acad Engn Phys, Inst Nucl Phys & Chem, Mianyang 621900, Peoples R China

来源：

CHINESE PHYSICS C | 2014年 / 38卷 / 03期

关键词：

n-gamma discrimination; charge comparison method; VME bus; BC501A liquid scintillation detector; low energy range; PULSE-SHAPE DISCRIMINATION; ORGANIC SCINTILLATORS;

D O I：

10.1088/1674-1137/38/3/036001

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：

A VME-based experiment system for n-gamma discrimination using the charge comparison method was established. A data acquisition program for controlling the programmable modules and processing data online via VME64X bus was developed through the use of LabVIEW. The two-dimensional (2D) scatter plots of the charge in the slow component vs. the total charge from Am-241-Be and Cf-252 neutron sources are presented. The 2D scatter plots of the energy vs. the ratio of the charge in the slow component to the total charge of the pulses are also presented. The quality of n-gamma discrimination was checked by the figure-of-merit, and the results showed good performance of n-gamma discrimination at the low energy range. Neutrons and gamma-rays were separated above 50 keVee (electron-equivalent energy). The quality of n-gamma discrimination has been improved compared with others' results at five energies (150, 250, 350, 450, 550 keVee).

引用

页数：5

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