The negative ion flux across a double sheath at the formation of a virtual cathode

For the case of negative ions from a cathode entering a plasma, the maximum negative ion flux and the positive ion flux before the formation of a virtual cathode have been calculated for particular plasma conditions. The calculation is based on a simple modification of an analysis of electron emissi...

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Bibliographic Details
Published in:Plasma sources science & technology 2010-08, Vol.19 (4), p.042001-042001
Main Authors: McAdams, R, Bacal, M
Format: Article
Language:English
Subjects:
Accuracy
Cathodes
Electron emission
Ion flux
Mathematical models
Negative ions
Sheaths
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Summary:For the case of negative ions from a cathode entering a plasma, the maximum negative ion flux and the positive ion flux before the formation of a virtual cathode have been calculated for particular plasma conditions. The calculation is based on a simple modification of an analysis of electron emission into a plasma containing negative ions. The results are in good agreement with a 1d3v PIC code model.
ISSN:0963-0252
1361-6595
DOI:10.1088/0963-0252/19/4/042001