NUCLEAR TECHNIQUES, Volume. 46, Issue 6, 060401(2023)
Research progress of organic scintillators for neutron detection
Figures & Tables(8)
Fig. 1. Physical mechanism of organic scintillators producing scintillating light
Fig. 2. Schematic diagram of the fast neutron, thermal neutron, and gamma ray pulse shapes
Fig. 3. Flowchart of the neutron detection experiment with organic scintillators
Fig. 4. Distribution of neutrons and gamma rays: double Gaussian fitting
Table 1. Important physical properties of common organic scintillators
View tableView in ArticleTable 1. Important physical properties of common organic scintillators
有机闪烁体
Organic scintillators
密度
Density / g∙cm-3
折射率
Refractive index
发光效率
Light output / %
衰减时间
Decay time / ns
最大波长
Wavelength / nm
蒽 Anthracene 1.250 1.620 100 30 447 二苯乙烯 Stilbene 1.160 1.626 50 3.5~4.5 390~410 NE-213 0.874 1.508 78 3.7 425 BC-501 0.901 1.538 80 3.3 425 BC-501A 0.874 1.530 78 3.2 425 EJ-309 0.900 1.570 80 ~3.5 424 EJ-301 0.874 1.505 78 3.2 425 EJ299-33 1.080 1.550 50 4.6 420 EJ299-33A 1.080 1.550 56 4.6 425 EJ-276 1.096 1.630 56 4.5 425 EJ-276G 1.096 1.580 52 4.6 490
Table 2. Important physical characteristics of 10B-loaded organic scintillators
View tableView in ArticleTable 2. Important physical characteristics of 10B-loaded organic scintillators
有机闪烁体
Organic scintillators
含硼量
10B-loaded / %
闪点
Flash point / ℃
发光效率
Light output / %
衰减时间
Decay time / ns
最大波长
Wavelength / nm
BC-523 0.96 -8 65 3.7 425 BC-523A 4.41 -8 65 3.7 425 EJ-309B 1 144 69 ~3.5 424 EJ-309B 2.5 144 64 ~3.5 424 EJ-309B 5 144 57 ~3.5 424 EJ-339 0.96 -8 65 ~4.0 425 EJ-339A 4.6 -8 65 ~4.0 425 EJ-339A2 2.5 -8 70 ~4.0 425
Table 3. Relevant research on digital time-domain and frequency-domain discrimination methods
View tableView in ArticleTable 3. Relevant research on digital time-domain and frequency-domain discrimination methods
数字化方法
Digital methods
有机闪烁体
Organic scintillators
中子源
Neutron sources
评价方法
Evaluation methods
参考文献
References
ZC BC-501 252Cf FOM [ 52 ]RT, CCM, FGA Stilbene 252Cf FOM, DER [ 55 ]CCM, ZC BC-501A 241Am-Be FOM [ 57 ]PGA, CCM BC-501A 241Am-Be, 252Cf FOM [ 56 ]WT EJ-301 241Am-Be FOM [ 58 ]FGA EJ-301 7Li-Be TOF, FOM [ 59 ]DFTM BC-501 241Am-Be FOM [ 60 ]
Table 4. Neutron gamma discrimination methods research based on machine learning
View tableView in ArticleTable 4. Neutron gamma discrimination methods research based on machine learning
机器学习方法
ML methods
有机闪烁体
Organic scintillators
中子源
Neutron sources
评价方法
Evaluation methods
参考文献
References
BPNN BC-501A Pu-Be FOM, DER [ 67 ]ENN EJ-335 241Am-Be FOM, DER [ 68 ]SVM, GMM NE-213 JET FOM [ 69 ]DT NE-213 252Cf, 241Am-9Be Relative Percent Error [ 70 ]K-means NE-213 252Cf FOM [ 71 ]Fc-NN, RNN Stilbene 252Cf DER, Recall [ 72 ]CNN BC-501A, EJ-276 137Cs, 252Cf Confusion Matrix [ 73 ]KPCA-GMM-ANN EJ-309 252Cf, 241Am-Be F1, DER [ 74 ]
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Wanping HU, Guiyu ZHANG, Yunlong ZHANG, Xianguo TUO. Research progress of organic scintillators for neutron detection[J]. NUCLEAR TECHNIQUES, 2023, 46(6): 060401
Paper Information
Category: Research Articles
Received: Mar. 6, 2023
Accepted: --
Published Online: Jul. 5, 2023
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