NDLI: Discharge over spacecraft insulator surface in low Earth orbit plasma environment

Content Provider	IEEE Xplore Digital Library
Author	Cho, M. Miyata, N. Hikita, M. Sasaki, S.
Copyright Year	1994
Abstract	When a spacecraft operates at HV, the spacecraft body potential becomes highly negative with respect to the surrounding plasma. A laboratory experiment has been carried out to study the interaction between the spacecraft insulator surface and the plasma. Once a discharge occurs through the insulator at one point on the surface, the positive current to the circuit drives the conductor, which lies below the insulator, positive. The potential of the undischarged surface increases as the conductor potential increases and collects electrons by neutralizing the positive charge stored before the discharge. The current path of an RC discharge is formed between the discharge spot and the undischarged insulator surface, which acts as the capacitance, through the plasma resistance and the spacecraft circuit resistance. An ion acoustic wave, launched by the potential jump of the undischarged surface, was detected by a Langmuir probe. There is a possibility that a very large amount of current flows into the spacecraft body circuit because the capacitance of the entire spacecraft surface is large.
Sponsorship	National Natural Science Foundation of China (NSFC) Region Centre Ville de Tours Conseil General D'Indre et Loire ABB IEEE Sandia National Laboratories TOSHIBA
Starting Page	501
Ending Page	506
Page Count	6
File Size	442562
File Format	PDF
ISSN	10709878
Volume Number	6
Issue Number	4
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1999-08-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Space vehicles Insulation Surface discharges Low earth orbit satellites Surface resistance Circuits Surface acoustic waves Plasmas Conductors Capacitance
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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