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Zur Modulation des Wandstromes in der geschichteten positiven Säule der Neon‐Glimmentladung
Author(s) -
Schmidt Martin
Publication year - 1970
Publication title -
beiträge aus der plasmaphysik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.531
H-Index - 47
eISSN - 1521-3986
pISSN - 0005-8025
DOI - 10.1002/ctpp.19700100307
Subject(s) - neon , atomic physics , ion , modulation (music) , langmuir probe , current (fluid) , electron , physics , chemistry , materials science , argon , plasma diagnostics , nuclear physics , acoustics , thermodynamics , quantum mechanics
It is shown, that the wall current of the striated positive column in a neon low pressure glow discharge is modulated with the frequency of the moving striations. There is a phase shift between wall currents of electrons and ions (∼π/2–3/4π), A mass‐spectrometric analysis of the ion currents shows Ne + and Ne 2 + ions, both currents are modulated. The modulation factor of the electron and ion current reaches values near 100% and 50%, repectively. The behaviour of the modulated wall currents may by explained by the potential oscillations in the Langmuir sheath near the wall.