利用探测器响应模式对 4π 伽马射线成像仪进行实验可行性研究

IF 1.5 4区物理与天体物理 Q3 PHYSICS, APPLIED

Japanese Journal of Applied Physics Pub Date : 2024-07-15 DOI:10.35848/1347-4065/ad5ba0

Yoshiharu Kitayama, Mitsuhiro Nogami and Keitaro Hitomi

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引用次数: 0

摘要

我们建造了一个伽马射线成像仪，它可以根据随机放置在三维空间中的多个伽马射线探测器的响应模式来估计伽马射线源的分布。伽马射线编码立方体照相机（C3G）由八个Gd3Al2Ga3O12（Ce）闪烁体和十八个铅立方体组成，安装在一个边长为86毫米的立方体外壳中，重约600克。4π成像实验的结果证实了对3米外的10 MBq 137Cs源进行10分钟成像测量的可行性。C3G 仅使用 8 个通道，而非典型成像仪所需的数百个通道。这种设置简化了电路和重构算法，使系统既经济又可靠。该技术设计小巧轻便，视场为 4π，有望在天文学、医学、核安全和退役项目中得到广泛应用。

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An experimental feasibility study of a 4π gamma-ray imager using detector response patterns

We constructed a gamma-ray imager that estimates the distribution of gamma-ray sources based on the response patterns of multiple gamma-ray detectors randomly positioned in three-dimensional space. The Coded Cube Camera for Gamma-ray (C3G), comprising eight Gd3Al2Ga3O12 (Ce) scintillator and eighteen lead cubes is housed in a cubical casing with an 86 mm edge length and weighs approximately 600 g. The results of the 4π imaging experiment confirmed the feasibility of imaging a 10 MBq 137Cs source 3 m away for a 10 min measurement. C3G operates with only eight channels, instead of the hundreds needed by a typical imager. This setup allows for a simplified circuit and reconstruction algorithm, resulting in a cost-effective and reliable system. With its compact and lightweight design and 4π field of view, this technology is expected to find extensive applications in astronomy, medicine, nuclear security, and decommissioning projects.

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来源期刊

Japanese Journal of Applied Physics 物理-物理：应用

CiteScore

3.00

自引率

26.70%

发文量

818

审稿时长

3.5 months

期刊介绍： The Japanese Journal of Applied Physics (JJAP) is an international journal for the advancement and dissemination of knowledge in all fields of applied physics. JJAP is a sister journal of the Applied Physics Express (APEX) and is published by IOP Publishing Ltd on behalf of the Japan Society of Applied Physics (JSAP). JJAP publishes articles that significantly contribute to the advancements in the applications of physical principles as well as in the understanding of physics in view of particular applications in mind. Subjects covered by JJAP include the following fields: • Semiconductors, dielectrics, and organic materials • Photonics, quantum electronics, optics, and spectroscopy • Spintronics, superconductivity, and strongly correlated materials • Device physics including quantum information processing • Physics-based circuits and systems • Nanoscale science and technology • Crystal growth, surfaces, interfaces, thin films, and bulk materials • Plasmas, applied atomic and molecular physics, and applied nuclear physics • Device processing, fabrication and measurement technologies, and instrumentation • Cross-disciplinary areas such as bioelectronics/photonics, biosensing, environmental/energy technologies, and MEMS