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A Cold Cathode Penning Ion Source

A Penning ion source and cold cathode technology, applied in ion beam tubes, discharge tubes, electrical components, etc., can solve the problems of short service life, low beam intensity, etc. The effect of prolonging the service life

Active Publication Date: 2018-10-12
LANZHOU UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the embodiments of the present invention is to provide a cold-cathode Penning ion source, which aims to solve the problems of low beam intensity and short service life of the existing cold-cathode Penning ion source

Method used

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  • A Cold Cathode Penning Ion Source
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  • A Cold Cathode Penning Ion Source

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Embodiment Construction

[0019] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0020] The structure of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0021] see Figure 1 to Figure 5 :

[0022] The electrons emitted from the cathode 2 or the cathode 8 are accelerated when passing through the electric field between the cathode 2 or the cathode 8 and the anode 5, and are decelerated and reversely accelerated before reaching the cathode 8 or the cathode 2, that is, the electrons are in the cathode 2— The anode 5-pair cathode 8 oscillates back and forth in the axial direction under the action of the electric field between the anode 5 and the cath...

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Abstract

The invention discloses a cold-cathode penning ion source. An anode of the cold-cathode penning ion source adopts a hidden fixing structure. A surface of an anticathode, which is close to a discharge chamber, adopts a concave structure. Cathode extraction adopts an up-down conical structure. A voltage of an anode is fed in through an anode terminal. A cathode plate, an intermediate electrode outer sleeve, a connecting flange and an anticathode welding flange are grounded and keep insulation with the anode through a ceramic flange and an insulation flange. In the invention, extraction beam intensity is increased, and simultaneously a service life of an ion source is prolonged and usage cost is reduced. A 1-5mA D beam can be extracted and a service life is longer than 500 hours. All the components adopt detachable structures. A damageable component can be conveniently replaced, and simultaneously a large space is left for parametric optimization and overall economic benefits are increased.

Description

technical field [0001] The invention belongs to the field of accelerator equipment, in particular to a cold cathode Penning ion source. Background technique [0002] Deuterium-deuterium (D-D) and deuterium-tritium (D-T) fusion reaction accelerator neutron sources are important single-energy neutron sources (referred to as neutron generators), which can be widely used in nuclear data measurement, nuclear fusion reactor basic research, and military basic research , fast neutron application technology and other aspects. The characteristics of D-D and D-T fusion reactions are that at lower D beam energy, there is a larger reaction cross section, that is, a low-energy accelerator can be used to accelerate D ion beams to bombard deuterium titanium (TiD) targets or tritium titanium (TiT) targets. Deuterium-deuterium (D-D) or deuterium-tritium (D-T) fusion reactions produce strong fast neutrons, and the yield of fast neutrons is proportional to the intensity of the D beam that bomb...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01J27/04
CPCH01J27/04
Inventor 黄智武王俊润卢小龙韦峥张宇姚泽恩马占文徐大鹏
Owner LANZHOU UNIVERSITY
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