Backscattering type X-ray scanner

Abstract

A backscattering type flying dots radioactive ray scanning checkout apparatus, wherein a rotatable drum shape straight line flying-spot scanning arrangement is used, 1-4 circular or square holes are arranged uniformly on the same circumference of the drum, its inner side is inlaid with lead or heavy metallic shielding layer, an X-ray source and fan-shaped collimating device are all arranged in the drum, and a special detector is employed. The advantages of the installation are little scattering radiation, less damage to human body, simplified structure and easy fabrication process.

Description

technical field [0001] The invention relates to an anti-scattering type ray scanning detection device, in particular to an anti-scattering type X-ray scanner, which belongs to the technical field of social security inspection and safety precaution measurement equipment. Background technique [0002] The anti-scatter ray scanner is a device that uses the information of the back-scattered ray on the object for measurement and processing, and then calculates the image and information of the internal material distribution on the surface of the detected object. The device can provide protection for the social security of airports, stations, various buildings, halls, halls and institutes. The radiation source of this kind of device can adopt isotope or X-ray. When scanning, some use flat beam scanning, and some use flying spot scanning. It works as figure 1 As shown: the rays emitted by the ray tube 1 are collimated by the front collimator 2 into a flat fan-shaped incident beam...

AI Technical Summary

Problems solved by technology

Chinese patent application "Multifunctional Industrial X-ray Imaging System" (Application No. 99113199) adopts the disk-mounted flying spot scanning technology, which is to process a specific specially designed slit on a rotating disk, to be connected with another slit with the slit The relative movement of the fixed plate can ensure the continuous and uniform scanning of the generated rod-shaped X-ray beam, which is a complex and difficult task

Therefore cause complicated equipment, make and process difficulty; Plus must draw out a conical beam from X-ray tube place and shoot on the plate, just can draw out a rod-shaped X-ray beam from the other side of fixed plate, the amount of X-ray beam drawn like this Larger, more opportunities to generate stray X-rays, and more complex shielding requirements

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