Dynamic plasma generation device based on modulated radio frequency

Abstract

The invention provides a dynamic plasma generation device based on modulated radio frequency, and the dynamic plasma generation device is used for solving the technical problem that with respect to an existing low-pressure non-equilibrium discharge plasma generation device, plasma is hard to control by person and is poor in dynamic property. The dynamic plasma generation device comprises a plasma discharge cavity, an annular high-voltage electrode, a vacuum system, a cooling system, a plasma dynamic waveform generator, a modulated radio frequency power supply, a radio frequency adapter, a radio frequency shielding interface and electromagnetic experiment shielding rooms. The annular high-voltage electrode is installed in the plasma discharge cavity, the electromagnetic experiment shielding rooms are fixed on two ends of the plasma discharge cavity, and are connected with the vacuum system, the cooling system is connected with the annular high-voltage electrode and the plasma discharge cavity, the plasma dynamic waveform generator generates a waveform signal, the modulated radio frequency power supply multiplies the waveform signal by a local oscillator signal and amplifies the waveform signal, through the radio frequency adapter and the radio frequency shielding interface connected with the plasma discharge cavity, an amplitude-modulated wave signal is transmitted to the annular high-voltage electrode. The dynamic plasma generation device based on modulated radio frequency can generate dynamic plasma in a certain frequency spectrum.

Description

technical field [0001] The invention belongs to the field of gas discharge plasma and relates to a plasma generating device, in particular to a dynamic plasma generating device based on modulated radio frequency, which can be used in the field of radio wave experiment testing. Background technique [0002] Studying the propagation characteristics of electromagnetic waves in plasma and the interaction between plasma and electromagnetic waves is the basis and key content of research work such as spacecraft re-entry, ionosphere research, and plasma stealth technology, among which ground experiments are to verify theoretical research and carry out The key link of the flight test is of great significance. Plasma is composed of a collection of ions, electrons, and unionized neutral particles. It is electrically neutral as a whole and exists widely in the universe. It is often regarded as the fourth state of matter. With the in-depth study of the problem, people realize that the d...

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Problems solved by technology

[0007] The purpose of the present invention is to overcome the existing defects of the above-mentioned prior art, and propose a dynamic plasma generation device based on modulated radio frequency, which is used to solve the difficulty of artificially controlling the plasma existing in the existing low-pressure unbalanced discharge plasma generation device. and technical problems of poor dynamic performance

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