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Cylindrical Langmuir probe, probe assembly and plasma plume flow field detection system

A Langmuir probe and cylindrical technology, which is applied in the field of ion detection, can solve the problems of low measurement accuracy and easy interference of measurement results, and achieve the effects of improving accuracy, alleviating interference of measurement results, and stabilizing the position

Active Publication Date: 2018-09-28
BEIHANG UNIV
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Problems solved by technology

[0007] The object of the present invention is to provide a cylindrical Langmuir probe, a probe assembly and a plasma plume flow field detection system, so as to alleviate the interference of the measurement results of the Langmuir probe in the prior art, and measure Technical issues with lower precision

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  • Cylindrical Langmuir probe, probe assembly and plasma plume flow field detection system

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Embodiment Construction

[0032] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0033] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, ...

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Abstract

The invention provides a cylindrical Langmuir probe, a probe assembly and a plume flow field detection system, and relates to the technical field of plasma detection. The cylindrical Langmuir probe comprises a tungsten rod needle body, a sheath cylinder and a hollow locking rod; the sheath cylinder and the hollow locking rod are both made from insulated materials; a needle body connecting column is arranged at one end of the tungsten rod needle body; the tungsten rod needle body penetrates out of a first end of the sheath cylinder, and the sheath cylinder is internally provided with a needle body locating cavity which cooperates with the needle body connecting column; a cable through hole for a cable to penetrate through is formed in the hollow locking rod; the hollow locking rod is inserted into a second end of the sheath cylinder, and can push the needle body connecting column to abut against the end face of the needle body locating cavity; the hollow locking rod is locked with the sheath cylinder. By means of the cylindrical Langmuir probe, the technical problems in the prior art that a measuring result of a Langmuir probe is easily interfered with, and the measuring precision is low are solved.

Description

technical field [0001] The invention relates to the technical field of plasma detection, in particular to a cylindrical Langmuir probe, a probe assembly and a plasma plume flow field detection system. Background technique [0002] The electric thruster is a kind of advanced propulsion method that uses electric energy to directly heat the propellant or ionizes and accelerates the propellant by electromagnetic action to obtain propulsion power. Electric thrusters include ion thrusters and Hall thrusters. Electric thrusters such as ion thrusters and Hall thrusters are widely used in attitude and orbit control of spacecraft because of their advantages such as high specific impulse, long life and small system mass. It has broad application prospects in space missions such as orbit control of large spacecraft, deep space exploration and interstellar navigation. [0003] Accurately obtaining electric thruster vacuum plume parameters is crucial for evaluating the performance of el...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05H1/00
Inventor 袁军娅韩木天刘立辉翁惠焱贺碧蛟
Owner BEIHANG UNIV
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