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Author Parker, J. B. ♦ Raitses, Y. ♦ Fisch, N. J.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword PLASMA PHYSICS AND FUSION TECHNOLOGY ♦ CAMERAS ♦ CATHODES ♦ CHARGED-PARTICLE TRANSPORT ♦ CYLINDRICAL CONFIGURATION ♦ ELECTRIC CURRENTS ♦ ELECTRON EMISSION ♦ ELECTRONS ♦ LANGMUIR PROBE ♦ LIGHT TRANSMISSION ♦ MAGNETIC FIELDS ♦ MAGNETOHYDRODYNAMICS ♦ PLASMA ♦ PLASMA DENSITY ♦ PLASMA DIAGNOSTICS ♦ THRUSTERS ♦ VISIBLE RADIATION ♦ CONFIGURATION ♦ CURRENTS ♦ ELECTRIC PROBES ♦ ELECTRODES ♦ ELECTROMAGNETIC RADIATION ♦ ELEMENTARY PARTICLES ♦ EMISSION ♦ FERMIONS ♦ FLUID MECHANICS ♦ HYDRODYNAMICS ♦ LEPTONS ♦ MECHANICS ♦ PROBES ♦ RADIATION TRANSPORT ♦ RADIATIONS ♦ TRANSMISSION
Abstract Through the use of high-speed camera and Langmuir probe measurements in a cylindrical Hall thruster, we report the discovery of a rotating spoke of increased plasma density and light emission which correlates with increased electron transport across the magnetic field. As cathode electron emission is increased, a sharp transition occurs where the spoke disappears and electron transport decreases. This suggests that a significant fraction of the electron current might be directed through the spoke.
ISSN 00036951
Educational Use Research
Learning Resource Type Article
Publisher Date 2010-08-30
Publisher Place United States
Journal Applied Physics Letters
Volume Number 97
Issue Number 9


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