Surface electrification simulation test system and method for satellite tail regions

Abstract

The invention relates to a surface electrification simulation test system and a method for satellite tail regions, and belongs to the test field. The system comprises a medium and low energy electronic gun, a three-dimensional transmission mechanism, a surface potentiometer, lamp filaments, a plasma diagnostic system, a Kaufmann ion source, a vacuum-pumping system, a vacuum chamber and a personal computer (PC). The method comprises that a satellite component is placed in the vacuum chamber to vacuumize the vacuum chamber; the Kaufmann ion source and the medium and low energy electronic gun are opened, and grid accelerating voltages, ion beams and electronic beams of the Kaufmann ion source and beam density and energy of the medium and low energy electronic gun are set; the plasma diagnostic system is used for diagnosing produced plasma environments; and the three-dimensional transmission mechanism drives the surface potentiometer to measure surface charging potentials in the satellite tail region. By means of the surface electrification simulation test system and the method for satellite tail regions, plasma environment simulation can be performed on satellite tail region environments, and the charging simulation test of the satellite component tail region can be performed.

Description

technical field [0001] The invention relates to a surface electrification simulation test system and method of a satellite tail area, in particular to a system and a method for simulating a low earth orbit plasma environment and an aurora electronic environment in a satellite tail area surface electrification effect test system and method, belonging to the testing field. Background technique [0002] When a satellite operates in a low-temperature, high-density plasma environment, an obvious "track" is formed in its tail region, which is an unequal electron and ion depletion region, because the orbital velocity of the satellite is greater than the ion thermal velocity and less than The heat rate of electrons, so electrons can enter this region more easily to form a negative potential barrier. This is the so-called "tail charging effect". Its obvious effect on satellites is that the surface of the tail medium will be charged to a higher level. negative potential. In particula...

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Problems solved by technology

[0005] (1) It is difficult to simulate the charged plasma environment in the tail zone on the ground;

[0006] (2) It is difficult to carry out simulation experiments on the real-scale satellite tail zone electrification on the ground

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