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Radiation imaging solid-state detector

A radiation imaging and detector technology, applied in the field of radiation detection, can solve the problems that the detector cannot completely solve the problems of light avoidance, moisture resistance, crosstalk, large crosstalk of flickering light, and poor anti-vibration effect, so as to enhance the electromagnetic anti-interference ability and volume Small, the effect of reducing maintenance costs

Inactive Publication Date: 2005-10-19
TSINGHUA UNIV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the way of solidifying the crystal and the photodiode, reflective white glue is used for isolation, but this isolation method has the disadvantages that the detector cannot completely avoid light, moisture and crosstalk, and the anti-vibration effect is poor.
However, the solid-state detector arrays produced by Heyman Corporation of Germany and DT Corporation of Finland use a basic measurement unit composed of multiple scintillation crystals. All the way to replace the entire detector array

Method used

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  • Radiation imaging solid-state detector

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Embodiment Construction

[0014] see Figure 1 ~ Figure 3 , The solid-state detector of the present invention includes a scintillation crystal 5 formed of cesium iodide or cadmium tungstate and a photodiode 4 coupled thereto. When the size of the scintillation crystal 5 and the photodiode 4 do not match, a light guide 9 can be arranged between the two. Said scintillation crystal 5, photodiode 4 or light guide 9 are contained in a housing made of nickel-plated brass material. The housing is composed of a shell 1 and a lower cover 7 . The inner wall of the housing 1 is a plane, and the lower cover 7 is stamped with a convex portion 10, which fits into the bottom port of the housing 1, and a covering edge 11 is left around the convex portion 10 to close the bottom plane of the housing 1, and paint on the sealing part. There is a coating layer that can avoid light and moisture. A rubber pad 6 and a lead sheet 8 are provided in the casing to fasten the scintillation crystal 5 including the light guide 9 ...

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Abstract

The present invention, radiant imaging solid detector, belongs to the field of radiodetection technology. The solid detector includes scintillating crystal and coupled photodiode held in some casing. The casing includes outer shell and lower cover with lightproof and moistureproof paint painted in the sealing part, and has rubber pad for fixing the scintillating crystal inside the casing and fixing and leading out the photodiode poles. Compared with available technology, the present invention has the features of being lightproof and moistureproof, simple structure, etc. When used, several solid detectors may constitute detector array capable of eliminating cross-talk of flash, strengthening electromagnetic antijamming capacity and raising imaging definition.

Description

technical field [0001] The invention relates to an X and gamma radiation imaging array solid detection device, which belongs to the technical field of radiation detection. Background technique [0002] In the prior art, Chinese patent 95219469.4 discloses a pen-type radiation imaging gas detection device. Although this patented technology has the advantages of better detection efficiency, better sensitivity, radiation resistance, and long self-collimation working life, its disadvantages But the size is large, the detector installation requires a large space, and the detection efficiency is still not ideal. Therefore, in order to reduce the volume of the detector and improve the detection effect. Chinese patent 01259228.5 discloses a cobalt 60 gamma ray source-cesium iodide or cadmium tungstate detector container inspection system, wherein the detector used is a solid detector coupled with a crystal and a photodiode. In the way of solidifying the crystal and the photodiode,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01T1/202
Inventor 李元景张清军高文焕曹贵禄代主得
Owner TSINGHUA UNIV
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