Device and method for ground-based simulation experimentation of charging effect of high altitude satellite material

A ground simulation and test method technology, applied in the field of measurement, can solve problems such as insufficient depth, lack of protection methods and design means, and inability to fully guarantee the stable operation of GEO orbit satellites in orbit, etc., and achieve the effect of strong operability and stable work

Inactive Publication Date: 2013-08-14
LANZHOU INST OF PHYSICS CHINESE ACADEMY OF SPACE TECH
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Problems solved by technology

At present, my country's understanding of the electrification effect of satellite materials is not deep enough, and there is a la

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  • Device and method for ground-based simulation experimentation of charging effect of high altitude satellite material

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Embodiment Construction

[0026] Such as figure 1 Shown is the high-orbit satellite material charging effect ground simulation test device of the present invention, and the device includes a shielding chamber 1, a vacuum chamber 2, an electron accelerator 3, a shielding shell 4, a plasma source 5, a sample stage 6, and an insulating pad 7. Vacuum pumping system 9, three-dimensional transmission mechanism 10, oscilloscope 11, pulse current probe 12, non-contact potentiometer 13, camera 14, and adjustable power supply;

[0027] Inside the vacuum chamber 2, the electron accelerator 3 and the camera 14 are installed on the top of the vacuum chamber 2; the plasma source 5 is installed on the side wall of the vacuum chamber 2, and a shielding shell 4 is arranged on the periphery of the plasma source 5 to prevent electrons from driving the plasma source 5 damaged;

[0028] The sample stage 6 is installed on the bottom surface of the vacuum chamber 2, and an insulating pad 7 is arranged on the sample stage 6;...

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Abstract

The invention relates to a device and method for ground-based simulation experimentation of charging effect of a high altitude satellite material and belongs to the field of measurement. The device comprises a shielded chamber, a vacuum chamber, an electron accelerator, a shielding case, a plasma source, a sample table, an insulation washer, a vacuum pumping system, a three-dimensional transmission mechanism, an oscilloscope, an impulse current probe, a non-contact potentiometer, a camera and an adjustable power source. The method comprises the following steps: starting the vacuum pumping system to vacuumize the vacuum chamber; starting the plasma source to simulate a GEO track plasma charging environment; starting the electron accelerator to simulate a GEO track high-energy electron charging environment; and utilizing the impulse current probe and the oscilloscope to monitor the transient discharge impulse of a material sample, utilizing the non-contact potentiometer to monitor the surface electric potential of the material specimen sample, and utilizing the camera to record the secondary discharge phenomenon. Through the adoption of the electron accelerator and the plasma source, the charging environment of a high track in a magnetic substorm can be simulated well; and the device and the method are suitable for measuring the charging effect of various satellite materials.

Description

technical field [0001] The invention relates to a ground simulation test device and method for electrification effect of materials used in high-orbit satellites, and belongs to the field of measurement. Background technique [0002] GEO's space-charged environment consists of two parts. The first is the geomagnetic substorm plasma. When a solar flare occurs, the interaction between the solar wind and the earth’s magnetic field will produce a geomagnetic substorm phenomenon. At this time, the energy in the geosynchronous orbit will be 1 to 50 keV, and the density will be 10 5 ~10 6 m -3 The large-flux plasma within the range will charge the surface of the GEO satellite to more than 10,000 volts; secondly, GEO is at the edge of the outer radiation belt of the earth, the energy of high-energy electrons is 0.1-10MeV, and the flux is 10 7 e / cm 2 In the range of s, the large flux of high-energy electrons is likely to cause the GEO satellite to have an internal charging effect....

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Application Information

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IPC IPC(8): G01R31/00
Inventor 王俊陈益峰李得天杨生胜秦晓刚史亮汤道坦柳青
Owner LANZHOU INST OF PHYSICS CHINESE ACADEMY OF SPACE TECH
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