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    • 3. 发明申请
    • Method and apparatus for inspection of materials
    • 材料检验方法和装置
    • US20080283761A1
    • 2008-11-20
    • US12152863
    • 2008-05-16
    • Max RobinsonArnab Basu
    • Max RobinsonArnab Basu
    • G01T1/24
    • G01N23/04G01N23/2076G01V5/0016
    • A method and apparatus for obtaining radiation transmission data including providing a radiation source, e.g., x-ray or gamma-ray source, and a radiation detector system, e.g., x-ray or gamma-ray detection system, spaced therefrom to define a scanning zone therebetween, the detector system capable of detecting and collecting spectroscopically resolvable information about incident radiation. Collecting a dataset of information about radiation incident including transmissivity of an object in the scanning zone at at least one scanning position from radiation transmitted through the object and received at the detector system. Resolving each dataset spectroscopically across a plurality of frequency bands within the spectrum of the source; at least one of the frequency bands corresponding to a characteristically scattered wavelength of a target species to be identified. The absence of or substantial reduction in a transmitted signal intensity at the frequency band is interpreted as the presence of the said target species.
    • 一种用于获得辐射传输数据的方法和装置,包括提供辐射源,例如x射线或γ射线源,以及辐射检测器系统,例如与其间隔开的x射线或γ射线检测系统,以限定扫描 区域,检测器系统能够检测和收集关于入射辐射的光谱可分辨的信息。 收集关于辐射入射的信息的数据集,其中包括在扫描区域中的物体在至少一个扫描位置处的透射率,从辐射透射通过物体并在检测器系统处接收。 在光谱范围内的多个频带内光谱地分解每个数据集; 至少一个频带对应于待识别的目标物种的特征散射波长。 在频带处的传输信号强度的不存在或实质上的减少被解释为所述目标物种的存在。