用于体内硼检测的瞬发伽马中子活化分析（PGNAA）的四种中子源的比较。
The comparison of four neutron sources for Prompt Gamma Neutron Activation Analysis (PGNAA) in vivo detections of boron.
作者信息
Fantidis J G, Nicolaou G E, Potolias C, Vordos N, Bandekas D V
机构信息
Department of Electrical Engineering, Kavala Institute of Technology, Kavala, Greece.
Laboratory of Nuclear Technology, School of Engineering, 'Democritus' University of Thrace, Xanthi, Greece.
出版信息
J Radioanal Nucl Chem. 2011;290(2):289-295. doi: 10.1007/s10967-011-1315-4. Epub 2011 Jul 17.
A Prompt Gamma Ray Neutron Activation Analysis (PGNAA) system, incorporating an isotopic neutron source has been simulated using the MCNPX Monte Carlo code. In order to improve the signal to noise ratio different collimators and a filter were placed between the neutron source and the object. The effect of the positioning of the neutron beam and the detector relative to the object has been studied. In this work the optimisation procedure is demonstrated for boron. Monte Carlo calculations were carried out to compare the performance of the proposed PGNAA system using four different neutron sources (Am/Be, Cf, Am/B, and DT neutron generator). Among the different systems the Cf neutron based PGNAA system has the best performance.
一个包含同位素中子源的瞬发伽马射线中子活化分析（PGNAA）系统已使用MCNPX蒙特卡罗代码进行了模拟。为了提高信噪比，在中子源和物体之间放置了不同的准直器和一个滤波器。研究了中子束和探测器相对于物体的定位效果。在这项工作中，展示了硼的优化程序。进行了蒙特卡罗计算，以比较使用四种不同中子源（镅/铍、锎、镅/硼和氘 - 氚中子发生器）的拟议PGNAA系统的性能。在不同系统中，基于锎中子的PGNAA系统具有最佳性能。
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