A plasma chamber with a mechanism for generating negative hydrogen ions

Abstract

The invention relates to a radio frequency plasma chamber meeting the mechanism that negative hydrogen ions are generated through plasmas and belongs to the field of neutral beam heating in the controlled magnetic confinement nuclear fusion auxiliary heating technology. According to the radio frequency plasma chamber, the upper end of a discharging source region chamber is connected with a first air inlet and a preionization electrode flange in a sealing mode, and the lower end of the discharging source region chamber is fixedly sealed in the middle of a sealing cover at the upper portion of a diffusion chamber; the sealing cover at the upper portion of the diffusion chamber is provided with a second air inlet, and the lower end of the diffusion chamber is fixedly sealed to a bottom plate. A discharging coil is wound in the middle of the outer side of the discharging source region chamber, and the upper end and the lower end of the discharging coil are each provided with a first magnetic field coil; a second magnetic field coil generating a radial field is arranged at the bottom of the diffusion chamber. Through the radio frequency plasma chamber, the top of the diffusion chamber can be supplemented with fresh hydrogen; after the hydrogen collides with high-energy electrons diffused down from a source region, the density of excited vibrational-state hydrogen molecules in the plasmas in the diffusion region is increased, the electron temperature is decreased, and the probability that the negative hydrogen ions are generated in the plasmas is increased.

Description

technical field [0001] The invention relates to a plasma chamber with a mechanism for generating negative hydrogen ions, aiming at the field of neutral beam heating in the auxiliary heating technology of controlled magnetic confinement nuclear fusion. Background technique [0002] Controlled magnetic confinement nuclear fusion is one of the most promising solutions to the future energy problems of mankind. Although the controlled magnetic confinement fusion plasma has been studied for more than half a century, many challenging problems are still faced. One of them is how to maintain the magnetic confinement fusion plasma at an extreme temperature of about 150 million degrees Celsius for a long time. To maintain the magnetic confinement fusion plasma at such a high temperature, ohmic heating alone is not enough, and secondary auxiliary heating methods must be used, such as neutral beam heating and radio frequency wave heating. Among them, neutral beam injection technology, ...

AI Technical Summary

Problems solved by technology

However, the development of the source of negative hydrogen ions is still in its infancy, so the inventor has designed a set of plasma chambers capable of producing negative ions.

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