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METHOD FOR IDENTIFYING MATERIAL BY FAST NEUTRON AND CONTINUOUS-ENERGY SPECTRUM X-RAY AND ITS APPARATUS

机译:快速中子和连续能谱X射线鉴定材料的方法及其装置

摘要

PROBLEM TO BE SOLVED: To provide a material identification method and an apparatus using fast neutrons and continuous-energy spectrum X-rays.;SOLUTION: The material identification method includes a step for irradiating an object to be tested with a beam of fast neutrons and a beam of continuous-energy spectrum X-rays each produced at a fast-neutron source 12 and a continuous-energy spectrum X-ray source 22 (a); a step for directly measuring the intensities of a transmitted X-ray beam and a transmitted fast neutron beam at an X-ray detector array 28 and a neutron detector array 18 (b); and a step for identifying the materials of the object to be tested on the basis of a curve formed on the basis of attenuations difference between the neutron beam and the X-ray beam transmitted through different materials of the object to be tested (c). In this case, the transmission attenuation intensities of fast neutrons and continuous-energy spectrum X-rays are constituted in such a way as to be different from each other, and an n-X curve not related to the thickness of the object to be tested but only related to equal effective atomic numbers Z of the object to be tested.;COPYRIGHT: (C)2007,JPO&INPIT
机译:解决的问题:提供一种使用快速中子和连续能谱X射线的材料识别方法和设备。解决方案:该材料识别方法包括以下步骤:用快速中子束照射待测试的物体,并通过在快速中子源12和连续能谱X射线源22处分别产生的连续能谱X射线束(a);在X射线检测器阵列28和中子检测器阵列18处直接测量透射的X射线束和透射的快速中子束的强度的步骤(b);步骤(c)是根据中子束和透过被检查物的不同材料的X射线束的衰减差而形成的曲线来确定被检查物的材料的步骤(c)。在这种情况下,快中子的透射衰减强度和连续能谱X射线以彼此不同的方式构成,并且nX曲线与被检体的厚度无关,而仅与与待测物体的等效有效原子序数Z有关。;版权所有:(C)2007,JPO&INPIT

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