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

CHEN Yong-Hao; CHEN Xi-Meng; ZHANG Xiao-Dong; LEI Jia-Rong; AN Li; SHAO Jian-Xiong; ZHENG Pu; WANG Xin-Hua; ZHU Chuan-Xin; HE Tie; YANG Jian

doi:10.1088/1674-1137/38/3/036001

Chinese Physics C> 2014, Vol. 38> Issue(3) : 036001 DOI: 10.1088/1674-1137/38/3/036001

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

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A VME-based experiment system for n-γ 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 ²⁴¹Am-Be and ²⁵²Cf 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-γ discrimination was checked by the figure-of-merit, and the results showed good performance of n-γ discrimination at the low energy range. Neutrons and γ-rays were separated above 50 keVee (electron-equivalent energy). The quality of n-γ discrimination has been improved compared with others' results at five energies (150, 250, 350, 450, 550 keVee).

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CHEN Yong-Hao, CHEN Xi-Meng, ZHANG Xiao-Dong, LEI Jia-Rong, AN Li, SHAO Jian-Xiong, ZHENG Pu, WANG Xin-Hua, ZHU Chuan-Xin, HE Tie and YANG Jian. Study of n-γ discrimination in low energy range (above 40 keVee) by charge comparison method with a BC501A liquid scintillation detector[J]. Chinese Physics C, 2014, 38(3): 036001. doi: 10.1088/1674-1137/38/3/036001

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Received: 2013-03-04
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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

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

Corresponding author: AN Li,

Received Date: 2013-03-04

Accepted Date: 1900-01-01

Available Online: 2014-03-05

Abstract: A VME-based experiment system for n-γ 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 ²⁴¹Am-Be and ²⁵²Cf 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-γ discrimination was checked by the figure-of-merit, and the results showed good performance of n-γ discrimination at the low energy range. Neutrons and γ-rays were separated above 50 keVee (electron-equivalent energy). The quality of n-γ discrimination has been improved compared with others' results at five energies (150, 250, 350, 450, 550 keVee).

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

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