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Device capable of converting high-energy X ray image into visible light image

An image conversion and visible light technology, applied in the field of high-energy physics, can solve the problems of difficult imaging, low resolution of visible light images, and impossible X-ray imaging, and achieve the effect of convenient testing.

Inactive Publication Date: 2009-12-16
INST OF FLUID PHYSICS CHINA ACAD OF ENG PHYSICS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, since the film adopts the integral imaging method, even if the film is mechanically replaced and the ultra-fast shutter technology is adopted, the image integration time of a single film is on the order of milliseconds, which makes it difficult for microseconds or even tens of nanoseconds for fast processes. X-ray imaging becomes impossible
The use of conversion crystals for X-ray imaging is a new technology that is currently being developed in China. However, the visible light images currently available usually have low resolution and do not have the time resolution capability of tens of nanoseconds.
In addition, for high-energy X-rays, due to their greater penetrating power, less energy is deposited in the crystal, making them more difficult to image

Method used

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  • Device capable of converting high-energy X ray image into visible light image

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Embodiment 1: see Fig. 1.

[0013] The crystal array is composed of several yttrium lutetium silicate (LYSO) cuboid crystal columns. The length of each crystal column is 1 cm, and the cross section is a square with a side length of 0.5 mm.

[0014] The side of the crystal column is polished and plated with two layers of metal. The inner layer is plated with aluminum (melting point 658 degrees Celsius) with a thickness of 0.3 microns, and the outer layer is plated with lead (melting point 327.4 degrees Celsius) with a thickness of 0.15 mm. One cross-section (incident surface) of the crystal column is polished and coated with an aluminum layer with a thickness of 0.3 microns, and the other cross-section (exit surface) is coated with a visible light anti-reflection film with a center wavelength of 420 nanometers.

[0015] After coating, the cross section of each crystal column is about a square with a side length of 0.8 mm, and each side is polished and flattened before b...

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Abstract

The invention discloses a device capable of converting a high-energy X ray image into a visible light image, which relates to a high-energy physical technique. The device comprises a plurality of parallel LYSO crystal columns to form an array, the incidence plane is parallel with the outgoing plane, and the incidence plane and the outgoing plane are vertical to the vertical direction of crystal columns. The device has the advantages of converting invisible high-energy X ray into visible light for the convenience of testing and achieving the spatial resolving power of sub-millimeter and the time resolving power of tens of nanoseconds.

Description

technical field [0001] The present invention relates to high energy physics technology. Background technique [0002] X-ray imaging is widely used in civil and national defense fields, involving medical X-ray photography, CT imaging, industrial flaw detection, customs inspection, jet diagnosis, high-energy flash photography, etc. The traditional X-ray imaging technology uses negative film as the recording medium, and converts the received X-ray information into visible images through three processes of latent image, developing and fixing. However, since the film adopts the integral imaging method, even if the film is mechanically replaced and the ultra-fast shutter technology is adopted, the image integration time of a single film is on the order of milliseconds, which makes it difficult for microseconds or even tens of nanoseconds for fast processes. X-ray imaging becomes impossible. Using conversion crystals for X-ray imaging is a new technology that is currently being d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B42/02G01N23/04G01N23/18G21K4/00
Inventor 李成刚邓建军李勤江孝国石金水张开志章林文
Owner INST OF FLUID PHYSICS CHINA ACAD OF ENG PHYSICS
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