Document Detail


Electron current extraction from a permanent magnet waveguide plasma cathode.
MedLine Citation:
PMID:  21974587     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
An electron cyclotron resonance plasma produced in a cylindrical waveguide with external permanent magnets was investigated as a possible plasma cathode electron source. The configuration is desirable in that it eliminates the need for a physical antenna inserted into the plasma, the erosion of which limits operating lifetime. Plasma bulk density was found to be overdense in the source. Extraction currents over 4 A were achieved with the device. Measurements of extracted electron currents were similar to calculated currents, which were estimated using Langmuir probe measurements at the plasma cathode orifice and along the length of the external plume. The influence of facility effects and trace ionization in the anode-cathode gap are also discussed.
Authors:
B R Weatherford; J E Foster; H Kamhawi
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The Review of scientific instruments     Volume:  82     ISSN:  1089-7623     ISO Abbreviation:  Rev Sci Instrum     Publication Date:  2011 Sep 
Date Detail:
Created Date:  2011-10-06     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0405571     Medline TA:  Rev Sci Instrum     Country:  United States    
Other Details:
Languages:  eng     Pagination:  093507     Citation Subset:  IM    
Affiliation:
University of Michigan, Ann Arbor, Michigan 48109, USANASA Glenn Research Center, Cleveland, Ohio 44135, USA.
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