Geant4 simulation of zinc oxide nanowires in anodized aluminum oxide template as a low energy X-ray scintillator detector
Geant4 simulation of zinc oxide nanowires in anodized aluminum oxide template as a low energy X-ray scintillator detector
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DOI：
10.1016/j.nima.2012.10.074
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发表时间：
2013-02
影响因子：
1.4
通讯作者：
A. Taheri;S. Saramad;S. Setayeshi
中科院分区：
文献类型：
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作者：
A. Taheri;S. Saramad;S. Setayeshi
在这项工作中，氧化锌纳米线阳极氧化铝纳米多孔模板提出了新一代的闪烁体为基础的X射线成像器的发展架构。采用Geant 4 Monte Carlo程序模拟了20 keV X射线照射下多孔阳极氧化铝模板中有序ZnO纳米线阵列的光学响应。结果表明，阳极氧化铝模板作为光波导具有特殊的作用，可以将X射线诱导的可见光子向探测器厚度方向传导，减少探测器体积内的光散射。这种廉价且有效的方法可以显著提高基于闪烁体的X射线成像器的空间分辨率，特别是在医学应用中。
In this work, ZnO nanowires in anodized aluminum oxide nanoporous template are proposed as an architecture for development of new generation of scintillator based X-ray imagers. The optical response of crystalline ordered ZnO nanowire arrays in porous anodized aluminum oxide template under 20keV X-ray illumination is simulated using the Geant4 Monte Carlo code. The results show that anodized aluminum oxide template has a special impact as a light guide to conduct the optical photons induced by X-ray toward the detector thickness and to decrease the light scattering in detector volume. This inexpensive and effective method can significantly improve the spatial resolution in scintillator based X-ray imagers, especially in medical applications.