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Be bold: "Ions accelerated by [ polarized electric fields or] ambipolar electric fields is believed to be the primary cause of polar wind." | Those who don't know the nuances between the two - are urged to first go get a cookie and a glass of milk - and chew slowly - before getting on the keyboard-and-mouse |
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[[Image:Plasma fountain.gif|thumb|200px|right|The Earth's plasma fountain, showing oxygen, helium, and hydrogen ions which gush into space from regions near the Earth's poles. The faint yellow area shown above the north pole represents gas lost from Earth into space; the green area is the [[aurora borealis]]-or plasma energy pouring back into the atmosphere.<ref>Plasma fountain [http://pwg.gsfc.nasa.gov/istp/news/9812/solar1.html Source], press release: Carlowicz, Mike; [http://pwg.gsfc.nasa.gov/istp/news/9812/solarwind.html "Solar Wind Squeezes Some of Earth's Atmosphere into Space"], December 1998</ref>]]
The '''polar wind''' or '''plasma fountain''' is a permanent outflow of [[plasma (physics)|plasma]] from the polar regions of Earth's [[magnetosphere]].<ref>{{Cite book |last1=Schunk |first1=R. W. |title=Ionospheres: physics, plasma physics, and chemistry |last2=Nagy |first2=Andrew |date=2000 |publisher=Cambridge University Press |isbn=978-0-521-63237-9 |series=Cambridge atmospheric and space science series |location=New York}}</ref>{{rp|29}}<ref name=amsglossary>{{Cite web |url=http://amsglossary.allenpress.com/glossary/browse?s=p&p=43 |title=AMS Glossary |access-date=2008-05-08 |archive-url=https://web.archive.org/web/20071031095206/http://amsglossary.allenpress.com/glossary/browse?s=p&p=43 |archive-date=2007-10-31 |url-status=dead }}</ref> Conceptually similar to the [[solar wind]], It is one of several mechanisms for the [[Atmospheric escape| outflow of ionized particles]]. Ions accelerated by
==History==
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