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a ray tube

A technology of ray tube and ion source, applied in the field of ray tube, can solve the problems of high comprehensive use cost, difficult to meet the requirements of safety precaution technology, etc., and achieve the effects of compact structure, low cost and good safety

Inactive Publication Date: 2017-07-18
INST OF ELECTRONICS ENG CHINA ACAD OF ENG PHYSICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

With the increasingly severe international anti-terrorism situation, it is difficult to meet the requirements of security protection technology by using any kind of technical equipment alone, and the inspection method of multiple technology integration is the development trend
At present, X-rays and neutron rays are produced separately by X-ray tubes, neutron tubes and corresponding power supply systems, and the overall cost of use is relatively high.

Method used

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Examples

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Embodiment 1

[0034] The ion source 1 is a high-frequency ion source, and the positive ions produced are deuterium cations; the negative electrode 2 is tritiated titanium; the anode 3 is graphite; the potentials of the ion source 1 and the anode 3 are both 0kV, the potential of cathode 2 is -100kV.

[0035] The material of the anode 3 can also be tungsten, gold, silver, copper, palladium, rhodium, molybdenum, iron, cobalt, nickel, chromium, lead or a compound, an alloy, an intermetallic compound or a composite material formed by a combination thereof One of.

[0036] The power supply I5 supplies power to the ion source 1 to generate positive ions. When the positive ions are emitted from the ion source 1, they are accelerated under the action of the electric field formed between the ion source 1 and the cathode 2 to bombard the cathode 2 with energy. Secondary electrons are generated, and when the secondary electrons emerge from the surface of the cathode 2, they are accelerated under the a...

Embodiment 2

[0038] The embodiment of this embodiment is basically the same as that of Example 1, except that the ion source 1 is a Penning ion source, and the positive ions produced are a mixture of deuterium positive ions and tritium positive ions; the cathode 2 is a tritium positive ion. Zirconium oxide; the anode 3 is tungsten; the potentials of the ion source 1 and the anode 3 are both +150kV, and the potential of the cathode 2 is 0kV.

Embodiment 3

[0040] The embodiment of this embodiment is basically the same as that of Example 1, except that the ion source 1 is a Kaufman ion source, and the positive ions produced are deuterium positive ions; the negative electrode 2 is titanium deuteride; The anode 3 is a tungsten-molybdenum alloy; the potentials of the ion source 1 and the anode 3 are both +100kV, and the potential of the cathode 2 is -100kV.

[0041] Those skilled in the art can change the type and structure of ion source 1, the type and structure of cathode 2, the type and structure of anode 3, the potential of ion source 1 and anode 3, the potential of cathode 2, the direct current of power supply I5 and power supply II6 Or pulse working mode to get other embodiments.

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Abstract

The invention provides a ray tube, which comprises an ion source, a cathode and an anode, wherein potential of the ion source and the anode is higher than that of the cathode, an electric field formed between the ion source and the cathode can accelerate positive ions generated by the ion source to bombard the cathode to generate neutron rays and secondary electrons, and an electric field formed between the anode and the cathode can the secondary electrons generated from the cathode to bombard the anode to generate X rays. The ray tube provided by the invention can generate the X rays and the neutron rays simultaneously through sharing a set of power supply system, and has the advantages of compact structure, low cost and high safety.

Description

technical field [0001] The invention relates to the field of nuclear technology, in particular to a ray tube. Background technique [0002] Rays are particles or photon beams with specific energy emitted by various radionuclides, or atoms, electrons, neutrons and other particles during the energy exchange process. Common ones are alpha rays, beta rays, X rays, gamma rays Rays and neutron rays, etc., rays have been widely used in nuclear physics and nuclear technology, material physics, aerospace, medical treatment, security inspection, geology and other fields. [0003] In the field of security inspection, X-ray technology is the most widely used, which can provide some important characteristics of the material that makes up the object. The most useful information is the density and outline of the object, and the inspection of prohibited items with a specific shape and a less complex background The effect is relatively good. However, X-ray technology also has some defects....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01J35/24H05H3/06H01J27/20
CPCH01J27/20H01J27/205H01J35/24H05H3/06
Inventor 黎明金大志
Owner INST OF ELECTRONICS ENG CHINA ACAD OF ENG PHYSICS
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