A Helicon Wave Electromagnetically Accelerated Plasma Source

A plasma source and helical wave technology, which is applied in the directions of plasma, plasma, ion beam tube, etc., can solve the problems of restricting the life of the thruster, low acceleration efficiency, and large acceleration area, and achieves the realization of thrust controllability, The effect of eliminating electrode corrosion and improving diversity

Active Publication Date: 2020-11-17
BEIHANG UNIV
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Problems solved by technology

The helical wave ion thruster uses the electrostatic grid acceleration method to accelerate ions, its acceleration efficiency is low, the required acceleration area is large, the alignment of the multi-layer grid is difficult, and the spacing is small, which is easy to cause gaps between the grids. Short circuit can easily cause corrosion of the grid, thus restricting the life of the thruster

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  • A Helicon Wave Electromagnetically Accelerated Plasma Source

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Embodiment Construction

[0030] The present invention will be further described below in conjunction with the accompanying drawings and embodiments. It should be understood that the following embodiments are intended to facilitate the understanding of the present invention, and have no limiting effect on it.

[0031] like figure 1 As shown, the helicon wave electromagnetic accelerated plasma source of the present invention has a cylindrical shape as a whole, and sequentially includes an outer magnetic shield 1, an outer magnetic coil group 2, an inner magnetic shield 3, an antenna 4, and an annular ceramic discharge chamber from outside to inside along the radial direction. 5 and inner magnetic coil group 6.

[0032] The outer magnetic shield 1 is a cylindrical structure with a bottom, its open end has an inwardly extending shoulder, and the bottom has an outer annular air supply port. In some embodiments, the outer magnetic shield 1 can be made of a soft iron core with a certain thickness, which can...

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Abstract

The invention discloses a helical wave electromagnetic accelerated plasma source, which is cylindrical as a whole, and mainly includes an outer magnetic shield, an outer magnetic coil group, an inner magnetic shield, an antenna, an annular ceramic discharge chamber and an inner magnetic shield from the outside to the inside along the radial direction. Magnetic coil set. On the one hand, the present invention uses a helical wave source as a plasma generating device, which has the characteristics of high ionization rate, electrodeless design, and strong controllability, and is a new type of plasma source with excellent performance; on the other hand, it uses Hall electromagnetic acceleration mechanism. Based on the high-density plasma generated by the wave source, the plasma is accelerated in the second order to increase the ejection speed of ions and increase the specific impulse of the thruster.

Description

technical field [0001] The invention belongs to the technical field of plasma sources, in particular to a helicon wave electromagnetic accelerated plasma with adjustable magnetic field configuration on the inner and outer walls of a discharge chamber, using a helicon wave plasma source as an ionization source, and using Hall electromagnetic acceleration effect as an ion acceleration stage source. Background technique [0002] The helicon wave plasma source is a device that can efficiently convert radio frequency wave energy into high-density plasma through an antenna system without electrode contact. It has a variety of propellants (oxygen-enriched gas or air), no electrodes (long life), high ionization rate (close to 100% in the central area), high density (1017-1020m-3), low magnetic field confinement (<0.1T), With significant advantages such as high controllability (multi-mode operation), it is very suitable for use in the field of space propulsion as a direct thruste...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F03H1/00H05H1/46
CPCF03H1/0006F03H1/0056F03H1/0081H05H1/46H05H1/4645F03H1/0075H01J27/18
Inventor 张尊汤海滨任军学章喆张广川鲁超
Owner BEIHANG UNIV
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