Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Method and appts. for gamma radiation detection imaging

A gamma ray and imaging technology, applied in the field of gamma ray detection and imaging, can solve the problems of low spatial resolution, high cost, and large imaging volume of the detector, and achieve the effect of easy production and low cost

Inactive Publication Date: 2005-01-12
谢舒平 +2
View PDF0 Cites 14 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional scintillation detector needs to use a large number of independent photomultiplier tubes to couple a group of scintillation crystal arrays for positioning analysis when performing imaging, and there is a large detection dead zone between the photomultiplier tubes, so that the entire detector imaging are large in size, high in cost, and relatively low in spatial resolution

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method and appts. for gamma radiation detection imaging
  • Method and appts. for gamma radiation detection imaging
  • Method and appts. for gamma radiation detection imaging

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0038] The gamma-ray detection and imaging method proposed by the present invention first vaporizes a photocathode on the surface of the scintillation crystal array; the gamma rays are incident parallel to the scintillation crystal array to make the crystal emit scintillation light; when the scintillation light is emitted from the end face of the crystal Cathode material acts to generate photoelectric effect to excite photoelectrons; collect photoelectrons and lead photoelectrons along the normal direction of the crystal surface; perform gain amplification on the exported photoelectrons to collect the amplified pulse voltage signal; calculate the gamma from the pulse voltage signal The energy and spatial position of the ray, the energy of the gamma ray is proportional to the size of the pulse voltage signal, and the spatial position of the gamma ray is equal to the position where the pulse voltage signal is generated.

[0039] In an embodiment of the present invention, use such as...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

Photocathode is coated by vaporization on surface of scintillating crystal array. Crystal array emits scintillating light caused by gamma rays. Photoelectrons are excitated under action between scintillating light and photocathode material. Photoelectrons are collected and exported. After gain amplification of the signal, Energy and spatial location of gamma rays are calculated from signal of impulse voltage. In the equipment, scintillating crystal array is placed in insulated bracket in vacuum chamber. Photocathode is on one side of the scintillating crystal array, and grid electrode is led out. Microchannel plate and imaging anode are in on another side of photocathode. One end of leading out cable is connected to imaging anode, and the other end is out of vacuum envelope. Features are high resolution in space and energy, and compact size.

Description

Technical field [0001] The invention relates to a method and device for gamma ray detection and imaging, and belongs to the technical field of radiation detection and imaging. Background technique [0002] Traditional gamma-ray detection technology usually uses a structure that uses a scintillation crystal as a detection material and a photomultiplier tube as a signal amplifier, which is generally called a scintillation detector. When gamma rays are incident into the scintillation crystal, according to its energy range, it usually produces photoelectric effect, Compton scattering effect and electron pair effect, and its own energy is finally absorbed by the crystal while emitting extremely weak scintillation light. For the scintillation light in the visible light region or the ultraviolet light region, after photoelectric conversion, a high-sensitivity signal amplifying device, namely a photomultiplier tube, can be used to detect all the information of gamma rays, such as the int...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G01T1/202
Inventor 谢舒平刘亚强谢立平
Owner 谢舒平
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com