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Portable and autonomous X-ray equipment for in-situ threat materials identification by effective atomic number high-accuracy measurement

机译:便携式和自主X射线设备,用于通过有效原子序数高精度测量来现场识别威胁物

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A novel portable and autonomous X-ray dual-energy Radioscopy equipment, developed for bomb squad interventions and NDT applications and capable of in-situ digital radiography imaging with measurement of the effective Atomic number of materials (Zeff), is presented. The system consists of a 2D dual-energy X-ray detector based on a rapidly translated linear array, a portable X-ray source and dedicated software running on a laptop or tablet PC. By measurement of the collected x-ray intensities at two different energy spectra, the system can directly compute the material Zeff value for various organic materials contained in the scanned object and then identify them from a database list. The entire system calibration has been obtained using explosive simulants with known Zeff values, the measurement error of Zeffbeing around ±3.5 % with respect to the reference values. The excellent image resolution and the ability of the automated threat identification algorithm are presented for experiments with a briefcase and a hand-held baggage having various domestic objects and an explosive simulant inside
机译:提出了一种新颖的便携式自动X射线双能放射线检查设备,该设备专为炸弹小队干预和NDT应用而开发,能够进行原位数字射线照相成像并测量有效原子序数(Zeff)。该系统由基于快速平移线性阵列的2D双能X射线探测器,便携式X射线源以及在便携式计算机或平板电脑上运行的专用软件组成。通过测量在两个不同能谱下收集到的X射线强度,系统可以直接计算扫描对象中包含的各种有机材料的材料Zeff值,然后从数据库列表中识别它们。整个系统的校准已使用具有已知Zeff值的爆炸物模拟物获得,相对于参考值,Zeff的测量误差约为±3.5%。提出了出色的图像分辨率和自动威胁识别算法的功能,可用于使用公文包和带有各种家用物品和内部爆炸物模拟物的手提行李进行的实验

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