Submicrosecond Long Pulse High Efficiency Relativistic Cerenkov Oscillator

Abstract

The invention relates to a microwave source in the technical field of high-power microwaves and provides a sub-microsecond long-pulse high-efficiency relativity Cerenkov oscillator. The sub-microsecond long-pulse high-efficiency relativity Cerenkov oscillator comprises a cathode base, a cathode, an anode outer cylinder, a cut-off neck, a slow-wave structure, a tapered waveguide, a reflector, an output waveguide and a solenoidal magnetic field, wherein an inverted L-shaped collector is arranged behind the tapered waveguide; two front resonant cavities are arranged between the cut-off neck and the slow-wave structure; a modulation cavity is arranged between a second slow-wave blade and a third slow-wave blade; and a rear resonant cavity is also arranged between the tail end of the slow-wave structure and the tapered waveguide. The disadvantages that generally a relativity Cerenkov oscillator cannot easily consider a large output microwave pulse width and high power conversion efficiency are overcome; the problem that a coaxial extraction structure easily generates plasma and thus the work efficiency is solved; sub-microsecond pulse width microwave output of which the efficiency is greater than 35% is achieved under the condition of using few slow-wave blades; the microwave source is compact in structure; and repetition frequency operation is easy to implement.

Description

technical field [0001] The invention relates to a microwave source device in the technical field of high-power microwaves, in particular to a relativistic Cerenkov oscillator with sub-microsecond long pulse and high efficiency. Background technique [0002] At present, high-power microwaves (usually referring to electromagnetic waves with a peak power greater than 100 MW and a frequency between 1 and 300 GHz) are used in directed energy weapons, power supply for satellites and space platforms, launch of small deep space probes, altitude change propulsion systems of orbiters, Electronic high-energy radio frequency accelerators, material processing and processing are widely used in national defense and industrial fields. [0003] The high power microwave source is the core device of the high power microwave system, and its operation is based on the coherent radiation of electron beams. The coherent radiation of the electron beam is divided into three types: Cherenkov radiatio...

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Problems solved by technology

[0008] The technical problem to be solved by the present invention is: the present invention provides a high-efficiency relativistic Cerenkov oscillator with sub-microsecond long pulses, which overcomes the difficulty of taking into account the long output microwave pulse width and power conversion efficiency of conventional relativistic Cerenkov oscillators. High, to solve the problem that the coaxial extraction structure is easy to generate plasma and affect the work efficiency. Under the condition of using less slow wave blades, the microwave output with sub-microsecond pulse width and efficiency greater than 35% is realized, and the microwave source has a compact structure. , easy to repeat frequency operation

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