Analysis of the self‐oscillations instability due to the plasma coupling with an emissive hot cathode sheath

Experimental results are reported showing that plasma self‐oscillations appear when the ion flux arriving at the hot emissive cathode double sheath boundary from a continuous plasma discharge is not high enough to sustain the discharge. Using the stability criterion of a double sheath and the partic...

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Bibliographic Details
Published in:Physics of plasmas 1996-09, Vol.3 (9), p.3331-3336
Main Authors: Arnas Capeau, C., Prasad, G., Bachet, G., Doveil, F.
Format: Article
Language:English
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Summary:Experimental results are reported showing that plasma self‐oscillations appear when the ion flux arriving at the hot emissive cathode double sheath boundary from a continuous plasma discharge is not high enough to sustain the discharge. Using the stability criterion of a double sheath and the particle balance equations, different conditions for the plasma stability are stated, in good qualitative agreement with experimental results. A nonlinear analysis giving the noninteger correlation dimension in a chaotic self‐oscillations regime is also reported, showing that a complete understanding of this instability may be reached by a finite set of nonlinear equations.
ISSN:1070-664X
1089-7674
DOI:10.1063/1.871602