Abstract
We describe a new type of energy analyser suitable for the use in plasmas having no external potential reference like ICPs and microwave discharges. It can be used to determine the ion distribution function (IDF) at a negatively biased surface and the high energy tail of the plasma electron distribution function (EDF). The EDF is measured without distortions by ion currents. This analyser was tested in a dc glow discharge and its results compared to measurements with Langmuir probes and a analyser with grounded reference. Some preliminary measurements were also performed in a rf parallel plate discharge.
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Dedicated to Prof. Jan Janča on the occasion of his 60th birthday, in remembrance of a fruitful and friendly European co-operation.
This work was supported by the Deutsche Forschungsgemeinschaft Bonn by Sonderforschungsbereich 191 and by the Directorate-General XII Science, Research and Development of European Commission, under Grant ERBCIPACT924034.
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Pointu, AM., Stamate, E. & Wiesemann, K. Principle and applications of a floating energy analyser. Czech J Phys 48, 1147–1159 (1998). https://doi.org/10.1023/A:1022801916514
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DOI: https://doi.org/10.1023/A:1022801916514