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Author Zhang, Yunchao ♦ Charles, Christine ♦ Boswell, Rod
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword PARTICLE ACCELERATORS ♦ CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS ♦ ACCELERATION ♦ FLUX DENSITY ♦ ION BEAMS ♦ MAGNETIC FLUX ♦ NOZZLES ♦ PARTICLE LOSSES ♦ PLASMA ♦ PLASMA EXPANSION ♦ PLASMA POTENTIAL ♦ RADIOWAVE RADIATION
Abstract Bi-directional plasma expansion resulting in the formation of ion beams travelling in opposite directions is respectively measured in the converging and diverging parts of a magnetic nozzle created using a low-pressure helicon radio-frequency plasma source. The axial profile of ion saturation current along the nozzle is closely correlated to that of the magnetic flux density, and the ion “swarm” has a zero convective velocity at the magnetic throat where plasma generation is localized, thereby balancing the bi-directional particle loss. The ion beam potentials measured on both sides of the magnetic nozzle show results consistent with the maximum plasma potential measured at the throat.
ISSN 00036951
Educational Use Research
Learning Resource Type Article
Publisher Date 2016-03-07
Publisher Place United States
Journal Applied Physics Letters
Volume Number 108
Issue Number 10


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