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Two-Dimensional LCIF Images of Electron Density and Temperature Within an ECR Plasma Cathode

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3 Author(s)
Brandon R. Weatherford ; Department of Nuclear Engineering and Radiological Sciences , University of Michigan, Ann Arbor, MI, USA ; Edward V. Barnat ; John E. Foster

Two-dimensional mappings of electron density and temperature within an electron cyclotron resonance (ECR) plasma cathode are presented. As electron current is extracted, a secondary plasma is formed on the upstream side of the extraction aperture, and the spatial distribution of the ECR plasma is affected. The aperture plasma is surrounded by a region of “hot” electrons, suggesting the possibility of a double layer near the aperture.

Published in:

IEEE Transactions on Plasma Science  (Volume:39 ,  Issue: 11 )