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"Plasma contactors are devices used on spacecraft in order to prevent accumulation of electrostatic charge through the expulsion of plasma (often Xenon). An electrical contactor is an electrically controlled switch which closes a power or high voltage electrical circuit. A plasma contactor changes the electrically insulating vacuum into a conductor by providing movable electrons and positive gas ions. This conductive path closes a phantom loop circuit to discharge or neutralize the static electricity that can build up on a spacecraft. Space contains regions with varying concentrations of charged particles such as the plasma sheet, and a static charge builds up as the spacecraft moves between these regions, or as the electrical potential varies within such a region. Static electricity may also build up on a spacecraft as a result of space radiation, including sunlight, depending on the materials used on the surfaces of the spacecraft. A plasma contactor is mounted on the Z1 segment of the International Space Station Integrated Truss Structure. See also *List of plasma (physics) applications articles References Michael J. Patterson "Cathodes Delivered for Space Station Plasma Contactor System," Research And Technology 1998, NASA Technical Report TM-1999-208815, NASA Glenn Research Center (retrieved 30 November 2012) Category:Plasma physics Category:Spacecraft components "
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"Koth or KOTH may refer to: * Koth, Ahmedabad, a village in the Ahmadabad district of Gujarat, India * Koth, Ballia, a village in the Ballia district of Uttar Pradesh, India * Koth (Conan), a nation in the fictional world of Conan the Barbarian * King of the Hill (disambiguation), colloquial abbreviation used by players of the game and many fans of the popular FOX animated TV series * Southwest Oregon Regional Airport (ICAO code: KOTH), a public airport located in the city of North Bend, in Coos County, Oregon, USA * The German soprano Erika Köth * Koth of the Hammer, a planeswalker in the collectible card game Magic: The Gathering * Sign of Koth, an element of the Cthulhu Mythos "