A Uniform Electromagnetic Field Device for Plasma Velocity Screening Instrument

A plasma and electromagnetic field technology, applied in the field of plasma measurement, can solve problems such as technical bottlenecks in the design of uniform electromagnetic field structures, and achieve the effects of easy installation accuracy, machining performance, reasonable relative position accuracy, and uniform electric field intensity distribution

CN110514446BActive Publication Date: 2020-07-21BEIHANG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2020-07-21

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Abstract

The invention discloses a uniform electromagnetic field device for a plasma velocity screening instrument. The sensor comprises a first ceramic plate, a second ceramic plate, a first magnetic pole plate, a second magnetic pole plate, a first magnetic pole plate gasket, a second magnetic pole plate gasket, a first electrode plate, a second electrode plate, a first electrode plate insulating block,a second electrode plate insulating block, a first electrode plate adapter, a second electrode plate adapter and a shell. By means of the technical scheme, the relative position precision is kept reasonable, and installation precision and machining performance are met. A special concave circular electric field structure is adopted; a uniform electric field and a uniform magnetic field are providedfor the interior of the plasma speed screening instrument, , the electric field distribution in the center area is relatively uniform and the electric field intensity is gradually reduced in the direction from the center to an electrode plate under a narrow and long electric field structure with the limited width, and a uniform electromagnetic field channel can be provided for the plasma speed screening instrument.
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Description

technical field

[0001] The invention belongs to the field of electric propulsion plasma measurement, and in particular relates to an ion velocity selector for deflecting and velocity screening measurement of ion thruster beam plasma by using a contact measurement method. Background technique

[0002] Electric propulsion is a kind of advanced propulsion method that uses electric energy to directly heat the propellant or ionizes and accelerates the propellant to obtain propulsion power. It has high specific impulse, thrust and efficiency. It has broad application prospects in space missions such as space navigation and interstellar navigation.

[0003] The ion thruster is a kind of electrostatic electric thruster, which has been widely used in the main propulsion system of satellites and deep space probes.

[0004] It is of great significance to measure the relevant parameters of the beam plasma of the ion thruster to optimize the design of the engine and improve the performa...

Examples

Embodiment Construction

[0029] In order to understand the above-mentioned purpose, features and advantages of the present invention more clearly, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0030] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described here. Therefore, the protection scope of the present invention is not limited by the specific details disclosed below. EXAMPLE LIMITATIONS.

[0031] Such as figure 1 and figure 2 As shown, a uniform electromagnetic field device for a plasma velocity screening instrument is characterized in that it includes a first ceramic plate 1, a sec...