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    • 5. 发明公开
    • X-RAY INSPECTION APPARATUS
    • RÖNTGENSTRAHLENINTERSUCHUNGSVORRICHTUNG。
    • EP1015876A4
    • 2005-06-08
    • EP98923831
    • 1998-05-28
    • L 3 COMM SECURITY & DETECTION
    • BJORKHOLM PAUL J
    • G01N23/04G01N23/201G01V5/00
    • G01N23/201G01N23/04G01V5/0016G01V5/0025
    • A non-destructive apparatus for inspection of cargo containing trucks (17), cargo containers, and the like uses a source (11) of high energy radiation, e.g., a fan beam of X-rays having energies about 8 MeV. The beam passes through the materials (cargo) to be inspected and strikes a first detector directly aligned with the beam. A second detector adjacent the first detector receives X-rays from the source (11) which are forward scattered from the materials being inspected at a small angle, e.g., 4° to 10°. The detectors (21) are preferably vertical arrays aligned with a vertical fan beam shaped by collimators (13, 19). Collimators limit the field of view of the first and second detectors (21) to a common spatial location, typically one that is fixed.
    • 用于检查含货车(17),货物集装箱等的非破坏性装置使用高能辐射源(11),例如能量约为8MeV的X射线的扇形束。 光束穿过要检查的材料(货物)并撞击与光束直接对准的第一检测器。 邻近第一检测器的第二检测器接收来自源(11)的X射线,该X射线从被检材料以小角度例如4°至10°向前散射。 检测器(21)优选为与由准直器(13,19)成形的垂直扇形束对准的垂直阵列。 准直器将第一和第二检测器(21)的视场限制在一个通常是固定的空间位置。