公开(公告)号：US5818054A

公开(公告)日：1998-10-06

申请号：US841113

申请日：1997-04-29

申请人： Gerhard Randers-Pehrson ,  David Brenner

发明人： Gerhard Randers-Pehrson ,  David Brenner

IPC分类号： G01N23/04 ,  G01N23/09 ,  G01N33/22 ,  G01V5/00

CPC分类号： G01V5/0016 ,  G01N23/04 ,  G01N23/09 ,  G01N33/227 ,  G01V5/0041

摘要： A method and apparatus for non-invasively determining the internal composition of objects are disclosed. The object of interest is probed with low energy, monoenergetic narrow beams of fast neutrons. The object is generally placed on a conveyor belt which is positioned between the accelerator and the detectors. Detectors, positioned at radial angles corresponding to the resonance energy levels of certain preselected elements, measure the neutrons that are not absorbed or scattered by the elements in the object and thus pass straight through the object. The information obtained from the detectors can then be used for subsequent tomographic reconstruction.

摘要翻译： 公开了一种用于非侵入性地确定物体的内部组成的方法和装置。 感兴趣的目标是用低能量，单能量的快中子窄波束进行探测。 该物体通常放置在位于加速器和检测器之间的传送带上。 检测器以对应于某些预选元件的共振能量水平的径向角定位，测量不被物体中的元件吸收或散射并因此直接通过物体的中子。 然后可以将从检测器获得的信息用于随后的层析成像重建。