EJ339A型液体闪烁探测系统光输出响应函数的理论模拟与实验研究

王亭亭; 王亮; 莫钊洪; 赵德山; 熊忠华

doi:10.11889/j.0253-3219.2016.hjs.39.050403

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EJ339A型液体闪烁探测系统光输出响应函数的理论模拟与实验研究

更新时间：2021-05-25

- EJ339A型液体闪烁探测系统光输出响应函数的理论模拟与实验研究
- Theoretical simulation and experimental research of the light output function of liquid scintillator EJ339A
- 核技术 2016年39卷第5期文章编号：050403
- 作者机构：
  
  1.中国工程物理研究院材料研究所表面物理与化学重点实验室江油 621907;
  2.中国工程物理研究院材料研究所绵阳 621700
- 作者简介：
  
  王亭亭,女,1990年出生,2013年毕业于中国科学技术大学,现为硕士研究生,辐射防护与环境保护专业
  熊忠华,E-mail:xiongzhonghua@caep.cn
- 基金信息：
- DOI：10.11889/j.0253-3219.2016.hjs.39.050403
  中图分类号： TL812+.2
- 收稿日期：2015-10-15，
  
  录用日期：2016-03-15，
  
  纸质出版日期：2016-01-25
- 稿件说明：
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王亭亭, 王亮, 莫钊洪, 等. EJ339A型液体闪烁探测系统光输出响应函数的理论模拟与实验研究[J]. 核技术, 2016,39(5):050403

Tingting WANG, Liang WANG, Zhaohong MO, et al. Theoretical simulation and experimental research of the light output function of liquid scintillator EJ339A[J]. Nuclear techniques, 2016, 39(5): 050403
王亭亭, 王亮, 莫钊洪, 等. EJ339A型液体闪烁探测系统光输出响应函数的理论模拟与实验研究[J]. 核技术, 2016,39(5):050403 DOI： 10.11889/j.0253-3219.2016.hjs.39.050403.

Tingting WANG, Liang WANG, Zhaohong MO, et al. Theoretical simulation and experimental research of the light output function of liquid scintillator EJ339A[J]. Nuclear techniques, 2016, 39(5): 050403 DOI： 10.11889/j.0253-3219.2016.hjs.39.050403.

摘要

对液体闪烁探测器EJ339A中子与伽马辐射测量问题

采用理论模拟与实验分析方法

结合自主设计搭建的基于LabVIEW的数字化信号处理系统

分别完成

Na、

133

Ba、

137

Cs和

Co等4种不同能量的γ源等效电子能量测量与刻度。在此基础上

利用中子飞行时间测量原理

在不同时间窗下将锎(

252

Cf)源近似分化成若干个单能中子源

获得1.9-7.8MeV范围内中子在探测器中的光输出响应函数。结果表明

理论模拟与实验测量值在低能段比较吻合

而高能段存在约7.3%的误差。

Abstract

Background:

The light output function is an elementary aspect for neutron spectrometry measured by an organic scintillator to unfold the neutron spectrum from the pulse height distribution.

Purpose:

This paper aims to investigate the properties of a boron-loaded liquid scintillator EJ339A

using photon sources and neutrons from a

252

Cf source.

Methods:

The light output was defined using Compton electron spectra. Pulse shape discrimination(PSD) and time of flight(TOF) were used to distinguish neutron and γ-rays. Combining theoretical modeling and experimental research

four different gamma sources are applied to achieve equivalent calibration of electronic energy

namely

133

137

and

respectively. Accordingly

based on TOF method

252

a spontaneous fission neutron source

is treated as several quasi-monoenergetic neutron sources under different time-windows.

Results:

The electron light output scale was calibrated by the measured detector response. Neutrons deposit energy in the detector and give a light output function with the neutron energy in the range of 1.9-7.8MeV.

Conclusion:

It shows that experimental data of light output function are in good agreement with simulation result in the low energy section

while discrepancies arise in the high energy section.

关键词

Keywords

references

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Enqvist A , Lawrence C C , Wieger B M , . Neutron light output response and resolution functions in EJ-309 liquid scintillation detectors . Nuclear Instruments and Methods in Physics Research , 2013 .

Naeem S , Clarke S , Pozzi S . Validation of Geant4 and MCNPX-PoliMi simulations of fast neutron detection with the EJ-309 liquid scintillator . Nuclear Instruments and Methods in Physics Research , 2013 .

Liao C , Yang H . n/ pulse shape discrimination comparison of EJ301 and EJ339A liquid scintillation detectors . Annals of Nuclear Energy , 2014 . 69 57 - 61 .

常乐 , 刘龙祥 , 王宏伟 , . EJ339A 俘获门控中子探测器双脉冲特性 . 核技术 , 2015 . 38 ( 5 ): 050403 .

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Novotny T , Büermann L , Guldbakke S . Response of NE213 liquid scintillation detectors to high-energy photons(7 MeV < E < 20 MeV) . Nuclear Instruments and Methods in Physics Research , 1997 .

Katz R , Sharma S , Homayoonfar M . Detection of energetic heavy ions . Nuclear Instruments and Methods , 1972 . 100 ( 1 ): 13 - 32 .

Kornilov N , Fabry I , Oberstedt S , . Total characterization of neutron detectors with a 252 Cf source and a new light output determination . Nuclear Instruments and Methods in Physics Research , 2009 .

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