Plasma instability of a vacuum arc centrifuge

M. J. Hole; R. S. Dallaqua; S. W. Simpson; E. Del Bosco

doi:10.1103/PhysRevE.65.046409

Plasma instability of a vacuum arc centrifuge

M. J. Hole^*, R. S. Dallaqua, S. W. Simpson, E. Del Bosco

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

15 Citations (Scopus)

Abstract

Ever since conception of the vacuum arc centrifuge in 1980, periodic fluctuations in the ion saturation current and floating potential have been observed in Langmuir probe measurements in the rotation region of a vacuum arc centrifuge. In this work we develop a linearized theoretical model to describe a range of instabilities in the vacuum arc centrifuge plasma column, and then test the validity of the description through comparison with experiment. We conclude that the observed instability is a "universal" instability, driven by the density gradient, in a plasma with finite conductivity.

Original language	English
Article number	046409
Pages (from-to)	046409/1-046409/15
Journal	Physical Review E
Volume	65
Issue number	4
DOIs	https://doi.org/10.1103/PhysRevE.65.046409
Publication status	Published - Apr 2002
Externally published	Yes

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10.1103/PhysRevE.65.046409

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AB - Ever since conception of the vacuum arc centrifuge in 1980, periodic fluctuations in the ion saturation current and floating potential have been observed in Langmuir probe measurements in the rotation region of a vacuum arc centrifuge. In this work we develop a linearized theoretical model to describe a range of instabilities in the vacuum arc centrifuge plasma column, and then test the validity of the description through comparison with experiment. We conclude that the observed instability is a "universal" instability, driven by the density gradient, in a plasma with finite conductivity.

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Plasma instability of a vacuum arc centrifuge

Abstract

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