Calculation of the signal current of self-powered neutron detectors in a nuclear reactor

方向 Direction 、	角度 Angle / (°) 、	内交界面 $J_{e i}$ 、	统计误差 Error 、	外交界面 $J_{i c}$ 、	统计误差 Error 、
向内 Inward	0~60	1.748×10^-2	0.001 1	3.137×10^-2	0.000 8
	60~120	3.922×10^-2	0.000 8	6.987×10^-2	0.000 6
	120~180	2.616×10^-2	0.000 9	4.117×10^-2	0.000 8
向外 Outward	0~60	1.173×10^-1	0.000 4	7.021×10^-2	0.000 6
	60~120	2.667×10^-1	0.000 3	2.377×10^-1	0.000 3
	120~180	1.465×10^-1	0.000 3	1.810×10^-1	0.000 3

Table 3. Electron flow at the critical radius position

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Table 3. Electron flow at the critical radius position

方向 Direction 、	角度 Angle / (°) 、	临界位置电子流 $J_{c}$ 、	统计误差 Error 、
向内 Inward	0~60	2.305×10^-2	0.000 9
	60~120	5.016×10^-2	0.000 7
	120~180	2.968×10^-2	0.000 9
向外 Outward	0~60	7.341×10^-2	0.000 5
	60~120	2.597×10^-1	0.000 3
	120~180	1.737×10^-1	0.000 3

Table 4. Charge deposition of the emitter, insulator, and collector
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Table 4. Charge deposition of the emitter, insulator, and collector
组成部分
Components
、
电荷沉积
Charge disposition
、
统计误差
Error
、
发射体Emitter 0.552 0 0.000 1
绝缘体Insulator 0.101 2 0.000 6
收集体Collector 0.197 2 0.000 3

Table 5. SPND effective current under three different calculation methods
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Table 5. SPND effective current under three different calculation methods
计算方法
Methods
、
净电流
Net current
、
统计误差
Error
、
式(8) Formula (8) 0.403 99 0.000 4
式(9) Formula (9) 0.404 04 0.000 6
式(10) Formula (10) 0.404 07 0.000 5

Table 6. Electron flow on the surface of the emitter/insulator and insulator/collector caused by photons

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Table 6. Electron flow on the surface of the emitter/insulator and insulator/collector caused by photons

方向Direc-tion	角度 Angle / (°) 、	正电子 Positron
方向Direc-tion	角度 Angle / (°) 、	J_ei、	误差 Error / % 、	J_ic、	误差 Error / % 、
向内 Inward	0~60	1.290×10^-6	0.024 5	2.481×10^-6	0.017 9
	60~120	3.095×10^-6	0.016 2	5.726×10^-6	0.012 4
	120~180	2.072×10^-6	0.019 9	3.838×10^-6	0.015 4
向外 Out-ward	0~60	8.062×10^-6	0.010 3	6.411×10^-6	0.012 0
	60~120	1.824×10^-5	0.006 8	1.871×10^-5	0.006 8
	120~180	9.679×10^-6	0.009 1	1.392×10^-5	0.007 6
方向 Direc-tion	角度 Angle / (°)	电子 Electron
方向 Direc-tion	角度 Angle / (°)	J_ei	误差 Error / %	J_ic	误差 Error / %
向内 Inward	0~60	2.338×10^-5	0.005 9	4.123×10^-5	0.004 5
	60~120	5.436×10^-5	0.004 0	9.397×10^-5	0.003 2
	120~180	3.676×10^-5	0.005 0	5.637×10^-5	0.004 2
向外 Out-ward	0~60	9.547×10^-5	0.003 1	8.871×10^-5	0.003 3
	60~120	2.052×10^-4	0.002 1	2.293×10^-4	0.002 0
	120~180	1.090×10^-4	0.002 8	1.518×10^-4	0.002 3

Table 7. The net current of positrons and electrons caused by photons
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Table 7. The net current of positrons and electrons caused by photons
电流组成
Current components
、
净电流
Net current
、
统计误差
Error
、
正电子电流Positron 2.844×10^-5 0.014 3
电子电流Electron 2.879×10^-4 0.003 7
总电流Total current 2.595 $\times 10^{- 4}$ 0.008 6

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Xiong WU, Xiangju ZHANG, Shijie LUO, Jieqiong JIANG. Calculation of the signal current of self-powered neutron detectors in a nuclear reactor[J]. NUCLEAR TECHNIQUES, 2024, 47(3): 030405

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Paper Information

Category: Research Articles

Received: Jul. 19, 2023

Accepted: --

Published Online: Apr. 29, 2024

The Author Email: JIANG Jieqiong (JIANGJieqiong)

DOI:10.11889/j.0253-3219.2024.hjs.47.030405

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology

Table 1. Geometric and material information of rhodium SPND in industrial applications

Table 1. Geometric and material information of rhodium SPND in industrial applications

Table 2. Electron flow on the surface of the emitter/insulator and insulator/collector

Table 2. Electron flow on the surface of the emitter/insulator and insulator/collector

Table 3. Electron flow at the critical radius position

Table 3. Electron flow at the critical radius position

Table 4. Charge deposition of the emitter, insulator, and collector

Table 4. Charge deposition of the emitter, insulator, and collector

Table 5. SPND effective current under three different calculation methods

Table 5. SPND effective current under three different calculation methods

Table 6. Electron flow on the surface of the emitter/insulator and insulator/collector caused by photons

Table 6. Electron flow on the surface of the emitter/insulator and insulator/collector caused by photons

Table 7. The net current of positrons and electrons caused by photons

Table 7. The net current of positrons and electrons caused by photons