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Inertial static confinement type target-free neutron tube

An inertial constraint and neutron tube technology, applied in discharge tubes, ion beam tubes, circuits, etc., can solve the problems of low output and short life of neutron tubes

Inactive Publication Date: 2013-07-24
NORTHEAST NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

These factors are the main reasons for the low output and short life of neutron tubes in my country.

Method used

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  • Inertial static confinement type target-free neutron tube

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Embodiment Construction

[0012] The neutron tube of the present invention is a concentric spherical structure, which seals the storage device and the squirrel cage metal electrode in the stainless steel spherical cavity, and the cooling mechanism is outside the metal cavity, forming an electric vacuum device with a simple and compact structure and convenient use. The relationship with the location is shown in the attached figure.

[0013] First, the negative high-voltage electrode 1 and the ceramic insulating rod 2 are sealed together, and the other end of the negative high-voltage electrode 1 is smoothly welded to the squirrel-cage metal electrode 3; then the prepared ceramic insulating rod 2 and the stainless steel spherical cavity wall 10 and the stainless steel metal shell 11 are sealed together, and the squirrel-cage metal electrode 3 is concentric with the stainless steel spherical cavity wall 10; then the storage electrode 4 and the oxygen-free copper tube 5 are sealed on the flange, and the sto...

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Abstract

The invention belongs to a neutron source capable of being turned off and particularly relates to an inertial static confinement type target-free neutron tube. The inertial static confinement type target-free neutron tube is designed by utilization of the inertial static confinement principle. The novel neutron tube is provided with a closed spherical metal cavity, a mouse-cage-shaped metal electrode is placed in the center of the spherical cavity, a storage device is sealed together with the metal electrode, and then the novel neutron tube is formed. The storage device is heated to send out mixed gas of deuterium and tritium, when a negative high voltage of 10KV-100KV is inflicted on the mouse-cage-shaped metal electrode, ions of deuterium (D) and tritium (T) are generated in the cavity body, and ion density in the central region is highest. The ions of deuterium and tritium are accelerated by an electric field in the cavity to head for the central region and continue to move forward relying on inertia after passing through the central region, when the speed drops to zero, the ions return, and the ions of deuterium and tritium carry out the reciprocating motion in the mode and mutually collide in the central region to generate neutrons. The neutron tube of the structure is obviously prolonged in service life and markedly improved in stability index. Under same neutron yield, the service life of the inertial static confinement type target-free neutron tube is prolonged by about one order of magnitude compared with that of a PIG source neutron tube.

Description

[0001] technical field [0002] The invention belongs to a neutron source that can be shut off, and in particular relates to an electrostatic inertia restraint type non-target neutron tube. [0003] Background technique [0004] At present, the neutron tubes produced in China all use the Penning (PIG) ​​ion source that extracts positive ions, and a negative high voltage of -60KV ~ -120KV is added to the target end to reduce the deuterium (D) ions and tritium (T) ions generated by the ion source. accelerated, and a nuclear reaction occurs on the target to produce neutrons. When the ion beam is accelerated, field emission points of electrons are easily formed on the surface of the Faraday cylinder surrounding the target. Some of these electrons hit the ceramic wall, resulting in a decrease in the insulation performance of the ceramic shell. Some hit the ground electrode of the acceleration gap, forming a dark current, which has an adverse effect on the high-voltage power sup...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05H3/06H01J27/04
Inventor 乔双
Owner NORTHEAST NORMAL UNIVERSITY
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