A device for measuring the dynamic characteristics of the charge on the wall of the discharge chamber of the ion thruster
A discharge chamber and wall technology, applied in the field of plasma diagnosis, can solve the problem of high measurement cost
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[0025] The present invention will be described in detail below with reference to the accompanying drawings and examples.
[0026] The invention provides a device for measuring the dynamic characteristics of the charge on the wall surface of the ion thruster discharge chamber, such as figure 1 As shown, it includes: a Langmuir plane probe 2 , a probe scanning power supply 13 and a data acquisition system 14 . figure 2 The specific structure of the Langmuir plane probe 2 is shown, which is composed of a plane probe 15 , a grub screw 19 , a ceramic cylinder 16 , a flat washer 17 and a nut 18 .
[0027] The present invention uses a planar probe as the detection front end, and the planar probe is a kind of Langmuir probe, which uses the electrostatic effect of the conductor in the plasma environment to obtain the volt-ampere characteristic curve of the probe in the plasma environment through experiments , and get the plasma density, temperature, electric potential and other param...
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