Emissive Langmuir Probes in the Strong Emission Regime for the Determination of the Plasma Properties

The determination of the plasma potential V pl of unmagnetized plasmas by using the floating potential of emissive Langmuir probes operated in the strong emission regime is investigated. The experiments evidence that, for most cases, the electron thermionic emission is orders of magnitude larger tha...

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Bibliographic Details
Published in:IEEE transactions on plasma science 2013-04, Vol.41 (4), p.695-700
Main Authors: Tierno, S. P., Domenech-Garret, J. L., Donoso, J. M., Jennewein, D., Herdrich, G., Fasoulas, S., Conde, L.
Format: Article
Language:English
Subjects:
Current density
Electric currents
Electric potential
Electron emission
Electrons
plasma diagnostics
Plasma physics
plasma probes
plasma properties
Plasma temperature
Probes
Temperature measurement
Wires
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Summary:The determination of the plasma potential V pl of unmagnetized plasmas by using the floating potential of emissive Langmuir probes operated in the strong emission regime is investigated. The experiments evidence that, for most cases, the electron thermionic emission is orders of magnitude larger than the plasma thermal electron current. The temperature-dependent floating potentials of negatively biased V p
ISSN:0093-3813
1939-9375
DOI:10.1109/TPS.2013.2243760