Simulated design of neutron ambient dose equivalent meter with gadolinium core plastic scintillator using Geant4 code

doi:10.1016/j.radmeas.2021.106582

HFCAS OpenIR

	Simulated design of neutron ambient dose equivalent meter with gadolinium core plastic scintillator using Geant4 code
	Hong, B.1; Xu, Y.2; Chen, N.2
	2021-06-01
发表期刊	RADIATION MEASUREMENTS
ISSN	1350-4487
通讯作者	Chen, N.(icefei@mail.ustc.edu.cn)
摘要	It has been demonstrated that the gadolinium-core plastic scintillator sphere is a stable, highly sensitive, transportable, and cost-efficient neutron detector made of environmentally friendly components. This detector comprises a metal gadolinium core inserted at the center of a high-scale plastic scintillator sphere. In this study, we conducted simulations to investigate the feasibility of obtaining accurate neutron ambient dose equivalent measurements using this type of detector. The Geant4 code based on the Monte Carlo method was employed to calculate the detector light output spectra for different neutron energies and the response function of the high energy part above 3 MeVee. The neutron energy responses of the detector were combined in an appropriate manner to match the energy-dependent neutron fluence to the ambient dose equivalent conversion coefficients. The Monte Carlo simulation results were used to optimize the thickness of the metal gadolinium core and plastic scintillator. The simulation results showed that a metal gadolinium core with a thickness of several hundred microns is a suitable choice considering manufacturing costs and the detector's efficiency. In addition, this type of detector with the plastic scintillator sphere size of 8" can predict the neutron ambient dose equivalent with good accuracy over a wide energy range from 0.01 eV to 20 MeV, Although it underestimated the neutron dose equivalent in the energy range from 10 keV to about 5 MeV and overestimated it in the energy interval from 5 MeV to 20 MeV.
关键词	Gadolinium Plastic scintillator Neutron ambient dose equivalent meter Energy response Geant4 simulation
DOI	10.1016/j.radmeas.2021.106582
收录类别	SCI
语种	英语
资助项目	National Nature Science Foundation of China[11805228]
项目资助者	National Nature Science Foundation of China
WOS研究方向	Nuclear Science & Technology
WOS类目	Nuclear Science & Technology
WOS记录号	WOS:000657389500002
出版者	PERGAMON-ELSEVIER SCIENCE LTD
引用统计	被引频次：1[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.hfcas.ac.cn:8080/handle/334002/123870
专题	中国科学院合肥物质科学研究院
通讯作者	Chen, N.
作者单位	1.Chinese Acad Sci, Hefei Inst Phys Sci, Inst Plasma Phys, Hefei 230031, Anhui, Peoples R China 2.Anhui Med Univ, Teaching & Res Sect Nucl Med, Hefei 230032, Peoples R China
推荐引用方式 GB/T 7714	Hong, B.,Xu, Y.,Chen, N.. Simulated design of neutron ambient dose equivalent meter with gadolinium core plastic scintillator using Geant4 code[J]. RADIATION MEASUREMENTS,2021,144.
APA	Hong, B.,Xu, Y.,&Chen, N..(2021).Simulated design of neutron ambient dose equivalent meter with gadolinium core plastic scintillator using Geant4 code.RADIATION MEASUREMENTS,144.
MLA	Hong, B.,et al."Simulated design of neutron ambient dose equivalent meter with gadolinium core plastic scintillator using Geant4 code".RADIATION MEASUREMENTS 144(2021).