Gamma-ray Spectroscopy Using Inorganic Scintillator Coated with Reduced Graphene Oxide in Fiber-Optic Radiation Sensor

被引:3
作者
Kim, Jin Ho [1 ]
Kim, Seunghyeon [1 ]
Song, Siwon [1 ]
Lim, Taeseob [1 ]
Park, Jae Hyung [1 ]
Kim, Jinhong [1 ]
Pyeon, Cheol Ho [2 ]
Hwang, Sung Won [3 ]
Lee, Bongsoo [1 ]
机构
[1] Chung Ang Univ, Sch Energy Syst Engn, Seoul 06974, South Korea
[2] Kyoto Univ, Inst Integrated Radiat & Nucl Sci, Res Ctr Safe Nucl Syst, Asashiro Nishi, Kumatori, Osaka 5900494, Japan
[3] Sangmyung Univ, Dept Syst Semicond Engn, Cheonan 31066, South Korea
基金
新加坡国家研究基金会;
关键词
reduced graphene oxide; gamma-ray spectroscopy; fiber-optic radiation sensor; inorganic scintillator; plastic optical fiber; SYSTEM;
D O I
10.3390/photonics8120543
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
In this study, we developed a remote gamma-ray spectroscopy system based on a fiber-optic radiation sensor (FORS) that is composed of an inorganic scintillator coated with reduced graphene oxide (RGO) and a plastic optical fiber (POF). As a preliminary experiment, we measured the transmitted light intensities using RGO membranes of different thicknesses with different wavelengths of emitted light. To evaluate the FORS performance, we determined the optimal thickness of the RGO membrane and measured the amounts of scintillating light and gamma energy spectra using radioactive isotopes such as Co-60 and Cs-137. The amounts of scintillating light from the RGO-coated inorganic scintillators increased, and the energy resolutions of the gamma-ray spectra were enhanced. In addition, the gamma-ray energy spectra were measured using different types of RGO-coated inorganic scintillators depending on the lengths of the POFs for remote gamma-ray spectroscopy. It was expected that inorganic scintillators coated with RGO in FORS can deliver improved performance, such as increments of scintillating light and energy resolution in gamma-ray spectroscopy, and they can be used to identify nuclides remotely in various nuclear facilities.
引用
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页数:11
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