Influence of profile shape on the diocotron instability in a non-neutral plasma column

Ronald C. Davidson; Gian Marco Felice

doi:10.1063/1.873067

Influence of profile shape on the diocotron instability in a non-neutral plasma column

Physics of Plasmas ◽

10.1063/1.873067 ◽

1998 ◽

Vol 5 (10) ◽

pp. 3497-3511 ◽

Cited By ~ 26

Author(s):

Ronald C. Davidson ◽

Gian Marco Felice

Keyword(s):

Plasma Column ◽

Profile Shape ◽

Diocotron Instability ◽

Neutral Plasma

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Nonlinear stability theorem for rotating coherent structures in a non‐neutral plasma column

Physics of Fluids B Plasma Physics ◽

10.1063/1.859966 ◽

1991 ◽

Vol 3 (9) ◽

pp. 2540-2547 ◽

Cited By ~ 10

Author(s):

Ronald C. Davidson ◽

Steven M. Lund

Keyword(s):

Nonlinear Stability ◽

Coherent Structures ◽

Plasma Column ◽

Stability Theorem ◽

Neutral Plasma

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The influence of azimuthal motion on ion resonance instability for a non-neutral plasma column

Journal of Plasma Physics ◽

10.1017/s0022377800018432 ◽

1995 ◽

Vol 54 (2) ◽

pp. 173-183 ◽

Cited By ~ 3

Author(s):

H. C. Chen

Keyword(s):

Plasma Column ◽

Cyclotron Frequency ◽

Plasma Frequency ◽

Maxwell Model ◽

Threshold Value ◽

General Treatment ◽

Plasma Rotation ◽

Rotational Equilibrium ◽

Neutral Plasma ◽

Fast Ion

A general treatment of ion resonance instability for a non-neutral plasma column is performed using a macroscopic cold-fluid-Maxwell model. The azimuthal motion of the plasma components has an important influence on the behaviour of the instability. When the electrons are in slow rotational equilibrium, the instability occurs in both slow and fast ion rotational equilibrium. However, there is stability when the electrons are in fast rotational equilibrium except that the l = 1 mode becomes unstable and independent of plasma rotation. The kink (l = 1) mode only occurs when the plasma column boundary exceeds a certain threshold value that depends on the ratio of the plasma frequency to the cyclotron frequency.

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