A Method of Reducing the Phase Difference of Electron Beam Radial Oscillation

Abstract

The invention belongs to the field of high-power microwave technology, and discloses a method for reducing the radial oscillation phase difference of electron beams. The method is based on improving the consistency of the initial phase of electrons emitted by cold cathode explosions, and partly solves the problem of explosive emission under low guiding magnetic field conditions. Radial oscillation problem caused by electron velocity dispersion. The method for reducing the radial oscillation phase difference of the electron beam can be realized by loading a non-uniform magnetic field near the cold cathode explosion emission surface. The loading of the non-uniform magnetic field can adjust the configuration of the guiding magnetic field near the surface of the cold cathode, improve the consistency of the emission direction and movement path of the emitted electrons, and further suppress the radial violent oscillation caused by the velocity dispersion between the electrons. Applying this technology to the development of low-guiding magnetic field high-power microwave generator devices can improve the beam quality of the explosively emitted electron beam and improve the working efficiency and reliability of the high-power microwave generator.

Description

technical field [0001] The invention belongs to the technical field of high-power microwaves, and relates to a method for reducing the radial oscillation phase difference of an electron beam in a foil-free diode. Background technique [0002] The high-power microwave source is an important device for generating high-power microwave radiation by means of high-current relativistic electron beams, and has bright application prospects. At present, the high-current relativistic electron beams required by high-power microwave sources are mainly produced by cold cathodes driven by high-voltage pulses to explode and emit plasma to form plasma. The beam current quality of the electron beam generated by the cold cathode directly determines the working efficiency and reliability of the high-power microwave source, which is an important direction of current high-power microwave technology research. Especially with the development of high-power microwave source technology towards the di...

AI Technical Summary

Problems solved by technology

These research foundations can partially provide technical guidance for improving the high-current relativistic electron beam transmission in foil-free diodes, but it is difficult to effectively reduce the radial oscillation of the electron beam under the condition of low guiding magnetic field

[0005] To sum up, there is still insufficient understanding of the root cause of electron beam radial oscillation under the condition of low guiding magnetic field, which limits the proposal of relevant suppression methods, and it is difficult to provide specific and effective information for the optimal design of high-power microwave generation devices with low guiding magnetic field. technical support

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