Simultaneous multifocal coherent x-ray scanning (cxrs)
2005
Online
Patent
The invention relates to a system for measuring the pulse transmission spectrum of X-ray quanta that are elastically scattered in an examination zone for containers according to the preamble of claim 1. Corresponding systems that are based on the principle of examination with coherent scattered radiation are known from the prior art and from our previous application EP 11 06 227. These systems are problematic in that the electronic system required for controlling the X-ray capacity of the different focal points is too complicated and the measuring time is relatively long as only one focus is active at a time. This results in a low detection efficiency as the voxel geometry allows for non-scanned areas so that objects looked for in the container can be overlooked. The invention is based on the surprising finding that these problems can be overcome when the detector arrangement (D) has a two-dimensional segmenting in the Y, Z plane and lies before the Z axis and that the X-ray emitter (Q) is disposed with an elongated anode that emits radiation across its surface either completely or partially at the same time. The secondary antiscatter grid (S) runs in the Y direction converging to O and in the Z direction about the angle θ to the X axis in such a manner that Y and X of the scattered voxel in the container are coded onto the Y and Z dimensions of the detector arrangement (D) and that the primary antiscatter grid (P) and the X-ray emitter (Q) run in a cylindrically symmetrical orientation about the Z axis or in a linear/parallel orientation to the Y axis in the X,Y plane.
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Simultaneous multifocal coherent x-ray scanning (cxrs)
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Autor/in / Beteiligte Person: | Harding, Geoffrey |
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Veröffentlichung: | 2005 |
Medientyp: | Patent |
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