Pahlavani M R, Mostaar A, Nadali-Varkani J
Department of Nuclear Physics, Faculty of Basic Science, University of Mazandaran, P.O.Box 47415-416, Babolsar, Iran.
Department of Medical Physics and Biomedical Engineering, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
Appl Radiat Isot. 2018 Feb;132:18-23. doi: 10.1016/j.apradiso.2017.10.043. Epub 2017 Oct 26.
This paper investigates the use of a suitable gamma detector array to increase the detectably of explosives in a prompt-gammas neutron activation analysis (PGNAA) system. Monte Carlo simulations (MCNP-4C) were used for analyzing the system. It was found that the system's performance is enhanced by the use of four detectors: three of the are located on the same side as the neutron source and the fourth on the opposite side. Signature-based radiation-scanning, with nine signatures for each detector, is also discussed.
本文研究了在瞬发伽马中子活化分析（PGNAA）系统中使用合适的伽马探测器阵列来提高炸药可探测性的问题。采用蒙特卡罗模拟（MCNP - 4C）对该系统进行分析。结果发现，使用四个探测器可增强系统性能：其中三个探测器位于与中子源同侧，第四个探测器位于另一侧。还讨论了基于特征的辐射扫描，每个探测器有九个特征。
