Apparatus for measuring the momentum transfer spectrum of elastically scattered x-ray quanta

摘要

the invention relates to an arrangement for measuring the impulsu00fcbertragungsspektrum of elastic scattered ru00f6ntgenquanten. ru00f6ntgenstreustrahlsysteme to clear detection of explosives and other crystalline substances such as drugs in containers such as luggage and the like used.the invention describes a technical implementation of such systems, in between gross and fine spatial resolution of the teilvolumina (voxel) can be rapidly switched, i.e., a rapid switching between the detektionsempfindlichkeit for large or small to detektiere nde quantities. the rapid switching of two measures is:(a) the introduction of a sliding 'y aperture or a couple, or the effective pulses coherently or non coherently integrated across the abtastrichtung andb) restricts the introduction of one or more orders of kreisringblenden. kreisringblenden to figure the abbildungsschichten of objektraumes on the detektorsystem used.the schlitzbreiten determine the vertical extent of the abbildungsschichten. a reduction in the schlitzbreiten causes a reduction of the layer / voxelhu00f6he. the movable kreisringblendensystem consists of at least two placed one upon the other and on their kreisringstruktur identical apertures.a small relative querversatz each other, the effective abbildungsschlitzbreiten reduced and the middle of the slit gleichsinning postponed. the latter result is that the left and right part of the voxel detektorystems divide and in slightly different heights of the objektraumes relocations.in this way, despite the reduction of the objektraum abbildungsschichthu00f6hen continue fully scanned.