A device and method for generating distributed X rays

An X-ray and distributed technology, applied in the parts of X-ray tubes, X-ray tubes, X-ray tubes, etc., can solve the problems of low emission capability and life of carbon nanotubes, complicated production processes, etc. Ring movement, good repeatability, and the effect of improving inspection efficiency

Active Publication Date: 2014-07-02
TSINGHUA UNIV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are disadvantages such as complex production process, low emission capability and lifespan of carbon nanotubes

Method used

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  • A device and method for generating distributed X rays
  • A device and method for generating distributed X rays
  • A device and method for generating distributed X rays

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Embodiment Construction

[0026] Specific embodiments of the present invention will be described in detail below, and it should be noted that the embodiments described here are only for illustration, not for limiting the present invention. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It will be apparent, however, to one of ordinary skill in the art that these specific details need not be employed to practice the present invention. In other instances, well-known structures, circuits, materials, or methods have not been described in detail in order to avoid obscuring the present invention.

[0027] Throughout this specification, reference to "one embodiment," "an embodiment," "an example," or "example" means that a particular feature, structure, or characteristic described in connection with the embodiment or example is included in the present invention. In at least one embodiment. Thus, appearances of the p...

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Abstract

Provided are apparatus and method for generating distributed x-rays. A hot cathode of an electron gun (1) is used in vacuum to generate electron beams (10) having certain initial movement energy and speed. Periodic scanning is performed with the initial low-energy electron beams, which are thus caused to be reciprocally deflected. A current-limiting device (4) is provided in the travel path of the electron beams along the direction of the reciprocal deflection. Through holes arranged in an array on the current-limiting device, only part of the electron beams targeting specific positions can pass to form sequential electron beam currents distributed in an array. These electron beam currents are accelerated by a high-voltage electric field to obtain high energy, bombard the anode target (5), and thus sequentially generate corresponding focus spots and x-rays distributed in an array at the anode target.

Description

technical field [0001] The invention relates to distributed generation of X-rays, in particular to a device and method for generating distributed X-rays. Background technique [0002] The X-ray source refers to the equipment that generates X-rays. It is usually composed of X-ray tubes, power supply and control systems, cooling and shielding and other auxiliary devices. The core is the X-ray tube. X-ray tubes usually consist of a cathode, an anode, and a glass or ceramic housing. The cathode is a direct-heated spiral tungsten wire. When working, a current is passed through it, and it is heated to a working temperature of about 2000K to generate a thermally emitted electron beam. The cathode is surrounded by a metal cover with a front slot, and the metal cover focuses the electrons. The anode is a tungsten target inlaid on the end face of a copper block. When working, a high voltage of hundreds of thousands of volts is applied between the anode and the cathode. The electrons ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01J35/06H01J35/08H01J35/14H01J35/30
CPCH01J35/30H01J35/14H01J2235/16H01J35/153H01J35/045H01J35/16
Inventor 李元景刘耀红刘晋升唐华平唐传祥陈怀璧闫忻水
Owner TSINGHUA UNIV
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