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Small Directional High Flux Neutron Generator

A neutron generator, high-throughput technology, applied in nuclear technology and application fields, can solve the problems of high cost, poor collimation performance, large volume, etc., and achieve the effect of high neutron yield and unlimited deposition power

Inactive Publication Date: 2015-11-18
INST OF NUCLEAR PHYSICS & CHEM CHINA ACADEMY OF
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a small-sized neutron generator, which can generate high-flux and high-collimation ratio neutron beams in a specific direction, so as to solve the problem that current high-yield neutron generators either have low flux in a specific direction, Poor collimation performance, or complex technology, bulky and high cost

Method used

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  • Small Directional High Flux Neutron Generator
  • Small Directional High Flux Neutron Generator
  • Small Directional High Flux Neutron Generator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Such as figure 1 and figure 2 The given elongated directional target is a single-sided target. In the length direction, the target surface has an inclination angle greater than 0 degrees and less than 5 degrees, and the projection density is evenly distributed. The specific inclination angle is determined by the length of the elongated directional target and the required directional projection area. .

[0036] The ion beam energy is 175keV, the current intensity is 100mA, the target length is 500mm, the target area is 500mm×10mm, the projected area of ​​the neutron beam extraction direction is 10×10mm, and the power density of the target surface is 350W / cm 2 heat flux density. The extraction line density of the ion source is 2mA / cm.

[0037] Using pure titanium target, the target thickness is 1mm, and the temperature rise is about 200 degrees; using copper-based titanium plated target, the temperature rise is about 10 degrees; using Al 2 o 3 Ceramic target, temper...

Embodiment 2

[0041] Such as image 3 and Figure 4 The given elongated directional target is a cylindrical target, and the shape of the bombardment area of ​​the cylindrical target is changed so that the bombarded target surface of the cylindrical target is inclined in the outgoing direction to form a cone, then the projection distribution of the outgoing surface is a circular ring, and the cone The inclination angle of the conical surface is set according to the required projection shape and size. Less than 2 10 rectangular Penning ion sources are evenly placed on the circumference of the cylindrical electrode.

[0042] The ion beam energy is 175keV, the current intensity is 300mA, the target length is 500mm, the area is 500mm×30mm, the projection area of ​​the neutron beam extraction direction is within a circle with a diameter of 10mm, and the power density borne by the target surface is 350W / cm 2 heat flux density. The linear density of the ion source is 6mA / cm, and the linear densi...

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Abstract

The invention discloses a small neutron generator which outputs high-flux neutrons in a specific direction. A rectangular penning ion source educes deuterium ions or deuterium tritium mixed ions with a certain width, and the ions bombard a long directional target under the coaxial electric field acceleration so as to generate high-flux neutrons in the axis direction of the target. Because the rectangular penning ion source and the long direction target can be prolonged randomly according to the requirements, the intensity of the ion beam output from the ion source, the power bore by the long directional target and the corresponding neutron yield are greatly improved. The axial projected area of the long directional target is small, so that the neutron flux level is 1 to 2 higher than that of the normal neutron generator in the axial direction; the small directional high-flux neutron generator is applicable to the fields which have direction requirements, such as neutron therapy, picture taking and explosive detection.

Description

technical field [0001] The invention relates to the field of nuclear technology and application, in particular to a small accelerator neutron generator. Background technique [0002] Small-scale neutron sources are generally divided into radioactive neutron sources and accelerator neutron sources. Radioactive neutron sources use radionuclides to generate neutrons, with low output and short life. The neutron source of the accelerator has a high yield, no neutrons are generated after the power is turned off, it is easy to use, good in controllability and high in safety. [0003] The neutron source of the accelerator uses the deuterium ions or deuterium-tritium mixed ions generated by the ion source. After being accelerated by the accelerating electric field, higher energy is obtained, and D / D or D / T fusion reactions occur on the target, and the neutralization is released in the 4π direction. son. When the ion beam bombards the target, high energy deposition is generated. Eve...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05H3/06
Inventor 何小海李彦张慧君娄本超唐君张钦龙刘百力刘湾黄瑾李艳
Owner INST OF NUCLEAR PHYSICS & CHEM CHINA ACADEMY OF
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