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High-temperature high-voltage miniature laser deuterium-deuterium atomic fusion neutron pipe

A high-temperature, high-pressure, neutron tube technology, applied in the direction of neutron sources, DC voltage accelerators, etc., can solve the problems of short service life, low output of controllable pulsed neutron tubes, etc., and achieve long service life, Small size, high output effect

Inactive Publication Date: 2008-09-24
XI'AN PETROLEUM UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the controllable pulsed neutron tubes used for well logging in China have low yield and short service life, and the accelerator type D-T (deuterium-tritium) nuclear reaction pulsed neutron tubes used have low neutron yields of about 10 8 neutrons / sec, even 10 7 n / s, the service life is only tens of hours, generally no more than 100 hours
Because the output of D-D (deuterium-deuterium) nuclear reaction pulsed neutron source is too low, there is no D-D nuclear reaction pulsed neutron tube at present

Method used

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  • High-temperature high-voltage miniature laser deuterium-deuterium atomic fusion neutron pipe

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] exist figure 1 Among them, the high-temperature and high-pressure small laser deuterium-deuterium fusion neutron tube of this embodiment is composed of a tube body 1, a glass window 2, a cathode 3, an anode 4, an insulating layer 5, a cathode corner 6, and an anode corner 7.

[0014] The pipe body 1 is a glass pipe body 1 or a ceramic pipe body 1. The outer diameter of the pipe body 1 is 50mm. When the inner wall of the pipe body 1 is sintered, a layer of insulating layer 5 is sintered, and the top of the pipe body 1 is sintered and fixed with a glass window 2. , the laser emitted by the laser source can be injected into the catheter body 1 from the glass window 2, and the lower end of the outer tube body 1 is sintered and fixed with the cathode corner 6 and the anode corner 7 connected with the tube body 1 as a whole. A cathode 3 is sintered and fixed in the tube body 1 at the same center line as the tube body 1. The cathode 3 is connected to the cathode corner 6 as a ...

Embodiment 2

[0019] In the present embodiment, the outer diameter of cathode 3 is 40 mm, the inner diameter is 32 mm, and the height is 110 mm. The bottom center of cathode 3 is processed with a central hole with a diameter of 22 mm. The anode 4 is a rod-shaped structure. The outer diameter of anode 4 is 8 mm, The height is 100mm. After the inside of the tube body 1 is evacuated to a vacuum, it is filled with pure deuterium gas, and the pressure of the deuterium gas is 535Pa. Other components and the coupling relationship of the components are the same as in Embodiment 1.

[0020] The principle of neutron generation in the high-temperature, high-pressure small laser deuterium-deuterium fusion neutron tube in this embodiment is the same as that in Embodiment 1.

Embodiment 3

[0022] In the present embodiment, the outer diameter of the negative electrode 3 is 40mm, the inner diameter is 34mm, and the height is 150mm. The bottom center of the negative electrode 3 is processed with a central hole with a diameter of 23mm. The anode 4 is a rod-shaped structure. The outer diameter of the anode 4 is 15mm. The height is 120mm. After the inside of the tube body 1 is evacuated to a vacuum, it is filled with pure deuterium gas, and the pressure of the deuterium gas is 550Pa. Other components and the coupling relationship of the components are the same as in Embodiment 1.

[0023] The principle of neutron generation in the high-temperature, high-pressure small laser deuterium-deuterium fusion neutron tube in this embodiment is the same as that in Embodiment 1.

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Abstract

The invention relates to a small laser deuterium-deuterium fusion neutron tube with a high temperature and high pressure. An insulation layer is arranged in the inner wall of the tube. A cathode and an anode in the cathode are arranged in the tube. A cathode corner connected with the cathode and an anode corner connected with the anode are arranged on the external lower part of the tube. The top of the tube is a transparent body and the tube is filled with deuterium gas. In the invention, the external diameter of the cathode is 40 mm and the internal diameter is 30-34 mm, as well as the height is 110-150 mm. a center hole with an aperture of 20-23 mm is arranged on the bottom center of the cathode. The anode is positioned in the center hole of the bottom. The anode and the cathode have a same shaft. The diameter of the anode is 8-15 mm and the height is 100-120 mm. The tube is filled with deuterium gap. The neutron tube of the invention has the advantages of small volume, high temperature resistance, high pressure resistance, high productivity and long service life, etc. The neutron tube is a component of an oil logging tool which can satisfy the neutron-neutron well detection under the conditions of high temperature 150 DEG C or more than 150 DEG C and the high pressure 80MPa or more than 80MPa.

Description

technical field [0001] The invention belongs to the technical field of high-temperature and high-pressure laser neutron sources, and in particular relates to a laser plasma D-D (deuterium-deuterium) fusion neutron source. Background technique [0002] Petroleum logging is one of the ten important disciplines of petroleum science and technology. The development direction of neutron logging or neutron-neutron time spectrum logging, and neutron-capture gamma logging or neutron-capture gamma energy spectrum logging technology is to use a controllable pulse neutron source. At present, the controllable pulsed neutron tubes used for well logging in China have low yield and short service life, and the accelerator type D-T (deuterium-tritium) nuclear reaction pulsed neutron tubes used have low neutron yields of about 10 8 neutrons / sec, even 10 7 n / s, the service life is only tens of hours, generally no more than 100 hours. Because the yield of the D-D (deuterium-deuterium) nuclear...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05H3/06G21G4/02
Inventor 庞巨丰
Owner XI'AN PETROLEUM UNIVERSITY
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