Electron gun for emitting double electron beams with different speeds

Abstract

The invention discloses an electron gun for emitting electron beams with different speeds, which is applied to the technical field of vacuum electronics and is used to solve the problem that there isno electron gun capable of emitting electron beams with different speeds in the prior art. A cathode-anode hybrid structure with the high potential function of an anode and the electron beam emissionfunction of a cathode is adopted. A first electron beam emitted by the emitting surface of a first cathode is accelerated for the first time by the voltage difference between the first cathode and thecathode-anode hybrid structure, and the first electron beam is accelerated for the second time by the voltage difference between the cathode-anode hybrid structure and a second anode. A second electron beam emitted by the emitting surface of a cathode on the cathode-anode hybrid structure is accelerated once by the voltage difference between the cathode-anode hybrid structure and the second anode. The first electron beam is focused by a first focusing electrode, and the second electron beam is focused by a second focusing electrode. The emission of two high-quality electron beams with different speeds is realized.

Description

technical field [0001] The invention belongs to the technical field of vacuum electrons, and in particular relates to a different-speed double-electron injection electron gun. Background technique [0002] Compared with solid-state devices, high-power, high-stability, and long-life vacuum devices have great advantages and development potential in the millimeter-wave terahertz band. However, with the development of vacuum electronic devices to higher frequencies, the size of the structure is reduced, and the difficulty of processing and assembly is greatly increased. In order to open up the development of vacuum devices in the terahertz field, the design of new slow-wave structures (such as interleaved double-grid slow-wave structures, double-row metal comb-shaped slow-wave structures, and folded waveguide-like slow-wave structures) and the new injection-wave interaction The exploration of the mechanism of action has become the research focus of terahertz vacuum devices in r...

AI Technical Summary

Problems solved by technology

However, the existing electron guns are usually designed to emit a single electron beam or multiple electron beams with the same velocity, and no design scheme for an electron gun capable of emitting electron beams with different velocities has been found.

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