Abstract Position-sensitive detectors (PSDs) have been used in neutron tomography and nanostructural characterization of material using neutrons that scattered from a monochromator of highly oriented pyrolytic graphite type, placed directly in the neutron beam in the Small Angle Neutron Scattering (SANS) facility at the Malaysian Nuclear Agency. PSD uses the 3He(n,p) reaction to detect neutrons. Because of the 3He high neutron cross section of 5333 b at 25.3 meV, a PSD is suitable for neutron detection across its axial direction at a low neutron flux of 103 cm−2‧s−1. Because of its insensitivity toward gamma radiation, the signals from the PSD for real neutrons are relatively easy to analyze. This paper discusses the use of a PSD in neutron tomography and nanostructural characterization of material in the SANS facility at the Malaysian Nuclear Agency.

中文翻译：

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中子断层扫描和材料表征中的位置敏感探测器

摘要 位置敏感探测器 (PSD) 已用于中子断层扫描和材料的纳米结构表征，使用中子从高度定向的热解石墨型单色器散射，直接放置在小角度中子散射 (SANS) 设施中的中子束中马来西亚核能署。PSD 使用 3He(n,p) 反应来检测中子。由于 5333 b 的 3He 高中子截面在 25.3 meV，PSD 适用于在 103 cm-2·s-1 的低中子通量下沿其轴向检测中子。由于它对伽马辐射不敏感，来自 PSD 的真实中子信号相对容易分析。