The response of an Al-10B4C coupled neutron detector based on PIPS technology to Cf-252

IF 1.3 4区 工程技术 Q3 INSTRUMENTS & INSTRUMENTATION Journal of Instrumentation Pub Date : 2023-11-01 DOI:10.1088/1748-0221/18/11/p11005
C. Zhang, G. Wu, Z. Li, H. Li, Z. Lu, H. Zhang, X. Wang, R. Li, C. Chen, F. Liu, Y. Qiu, Y. Guo
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Abstract

Abstract After decades of discussions, it has been firmly established that detectors made of silicon-based semiconductor materials can be effectively used for neutron detection by simply coating them with suitable substances. The incident thermal neutrons interact with the coating neutron-sensitive materials such as 10 B and 6 LiF, resulting in the production of secondary charged particles which can be effectively detected in the sequencial silicon substrate. In this article, the detector system was designed with a coupled neutron detector structure which combined a silicon detector with a 10 B 4 C film in various forms. The 10 B 4 C layer was deposited on the substract with electron beam evaporation method. Two kinds of structrue were discussed: (1) one was the direct contact neutron detector by depositing 10 B 4 C directly onto the front surface of silicon-based detectors; (2) the other was the coupled neutron detectors by depositing 10 B 4 C onto substrates made from different materials such as Al and glass which then coupled with silicon-based detectors. The responses of these neutron detectors to neutrons (Cf-252) were measured individually. It's showen that the detection capability of direct contact neutron detectors was lower than the coupled neutron detectors. For the coupled detectors, the detector by depositing 10 B 4 C on the aluminum substrate was found to be superior than that by depositing 10 B 4 C on the glass substrate.
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基于PIPS技术的Al-10B4C耦合中子探测器对Cf-252的响应
经过几十年的讨论,硅基半导体材料制成的探测器可以有效地用于中子探测,只需在其表面涂上合适的物质。入射的热中子与涂层中子敏感材料(如10b和6lif)相互作用,产生二次带电粒子,可在顺序硅衬底中有效检测。本文设计了一种将硅探测器与多种形式的10b4c薄膜相结合的耦合中子探测器结构。采用电子束蒸发法在基片上沉积了10b4c层。讨论了两种结构:(1)直接在硅基探测器前表面沉积10b4c的直接接触式中子探测器;(2)另一种是耦合中子探测器,将10b4c沉积在不同材料(如Al和玻璃)的衬底上,然后与硅基探测器耦合。分别测量了这些中子探测器对中子(Cf-252)的响应。结果表明,直接接触中子探测器的探测能力低于耦合中子探测器。对于耦合探测器,发现在铝基板上沉积10b4c的探测器优于在玻璃基板上沉积10b4c的探测器。
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来源期刊
Journal of Instrumentation
Journal of Instrumentation 工程技术-仪器仪表
CiteScore
2.40
自引率
15.40%
发文量
827
审稿时长
7.5 months
期刊介绍: Journal of Instrumentation (JINST) covers major areas related to concepts and instrumentation in detector physics, accelerator science and associated experimental methods and techniques, theory, modelling and simulations. The main subject areas include. -Accelerators: concepts, modelling, simulations and sources- Instrumentation and hardware for accelerators: particles, synchrotron radiation, neutrons- Detector physics: concepts, processes, methods, modelling and simulations- Detectors, apparatus and methods for particle, astroparticle, nuclear, atomic, and molecular physics- Instrumentation and methods for plasma research- Methods and apparatus for astronomy and astrophysics- Detectors, methods and apparatus for biomedical applications, life sciences and material research- Instrumentation and techniques for medical imaging, diagnostics and therapy- Instrumentation and techniques for dosimetry, monitoring and radiation damage- Detectors, instrumentation and methods for non-destructive tests (NDT)- Detector readout concepts, electronics and data acquisition methods- Algorithms, software and data reduction methods- Materials and associated technologies, etc.- Engineering and technical issues. JINST also includes a section dedicated to technical reports and instrumentation theses.
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