A Cold Cathode for Generating Cylindrical Multiple Intense Relativistic Electron Beams

A cylindrical, relativistic technology, applied in the field of microwave generation systems in the field of high-power microwave technology, can solve the problems of electron loss and uneven emission of multi-injection electron beams in a sector, achieve high transmission efficiency, and improve beam conversion efficiency.

Active Publication Date: 2016-06-15
INST OF APPLIED ELECTRONICS CHINA ACAD OF ENG PHYSICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] The purpose of the present invention is to overcome the disadvantages of non-uniform emission of fan-shaped multi-injection electron beams and electron loss due to collisions with drifting tube walls during the transmission process. cold cathode

Method used

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  • A Cold Cathode for Generating Cylindrical Multiple Intense Relativistic Electron Beams
  • A Cold Cathode for Generating Cylindrical Multiple Intense Relativistic Electron Beams

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Embodiment 1

[0029] Such as figure 1 and figure 2 The cold cathode structure of the cylindrical 16-injection high-current relativistic electron beam shown in the figure, the cathode rod, the cathode rod transition ring, the cathode rod transition section, and the cathode seat are coaxial structures, all of which are made of stainless steel and maintain good electrical connections. The diameter is 54mm. The length of the cathode rod is 145mm. The length of the cathode rod transition ring is 50mm, and the quantity is 1. The length of the transition section of the cathode rod is 235mm; the length of the cathode holder is 45mm, and there is a vent hole with a diameter of 14mm in the center. 16 M2 internal threaded holes are provided. The cathode column is made of stainless steel, the number is 16, the outer diameter is 2.1 mm, the bottom end is an M2 external thread structure, and the top end is a smooth cylinder structure. The cathode ball head is made of graphite material, the number i...

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Abstract

The invention discloses a cold cathode capable of generating multiple cylindrical intense relativistic electron beams. The cold cathode comprises a cylindrical structure which is made of a metal material high in conductivity and emission threshold and has the same outer diameter, and a cathode rod, a cathode rod transition ring, a cathode rod transition section, a cathode seat, a cathode column and a cathode bulb which are all coaxial and in excellent electric connection with each other. Due to even distribution of the surface field of the cathode bulb serving as an emitting component in the cold cathode, the cold cathode has even electron emission density and the emitted multiple cylindrical electron beams are distributed symmetrically about the own centers, respectively; under the action of an appropriate guide magnetic field, the electron beams are not prone to collide with the wall of a multiple-beam drift tube due to that the electron beams rotate around the own centers in the transmission process in the drift tube; the transmission efficiency is high, the space configuration of the electron beams in the drift tube is kept unchanged, and the beam conversion efficiency is improved.

Description

technical field [0001] The invention relates to the field of cathode technology in pulse power technology, in particular to a cold cathode for generating cylindrical multi-injection high-current relativistic electron beams. The invention can be applied to microwave generation systems in the field of high-power microwave technology. Background technique [0002] In the pulse power technology, the cathode technology is an important branch. The energy and quality of the electron beam generated by the cathode determine the application prospect of the pulse power source. The field of high power microwave technology is an important application direction of pulse power technology. In high-power microwave devices, the electron beam generated by the cathode interacts with an electromagnetic field to excite or amplify the microwave signal. As a popular high-power microwave device, relativistic klystron amplifier (RKA) has the advantages of high power, high efficiency, stable phase an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01J23/04
CPCH01J23/04
Inventor 王淦平许州李春霞黄华刘振帮陈昭福谭杰罗敏康强向飞李文君
Owner INST OF APPLIED ELECTRONICS CHINA ACAD OF ENG PHYSICS
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