Low‐frequency flute instabilities of a bounded plasma column

1973 ◽  
Vol 44 (8) ◽  
pp. 3505-3512 ◽  
Author(s):  
T. D. Rognlien
Keyword(s):  
Plasma Column ◽  
Low Frequency ◽  
Bounded Plasma

Anomalous skin effect for a plasma column in a magnetic field

1973 ◽  
Vol 10 (3) ◽  
pp. 349-358 ◽  
Author(s):  
R. G. Storer ◽  
C. Meaney
Keyword(s):  
Magnetic Field ◽  
Plasma Column ◽  
Electron Density Distribution ◽  
Skin Effect ◽  
Axial Magnetic Field ◽  
Complete Solution ◽  
Low Frequency ◽  
Anomalous Skin Effect ◽  
Plasma Radius ◽  
Cylindrical Plasma Column

The influence of a steady axial magnetic field on the anomalous penetration of low frequency electromagnetic fields into a cylindrical plasma column is investigated by considering a plasma with a Gaussian electron density distribution. For this model, a complete solution is obtained for Boltzmann's equation coupled to Maxwell's equations, and the fields calculated exactly. The results show dramatic changes of the internal fields for small changes of the applied magnetic field when the average Lamour radius of the electrons is of the order of the plasma radius.

Trapping of electrons in troughs of self generated electromagnetic standing waves in a bounded plasma column

2014 ◽  
Vol 21 (1) ◽  
pp. 012111 ◽  
Author(s):  
Sudeep Bhattacharjee ◽  
Indranuj Dey ◽  
Krishanu Roy Chowdhury ◽  
Debaprasad Sahu ◽  
Shail Pandey ◽  
...  
Keyword(s):  
Plasma Column ◽  
Standing Waves ◽  
Bounded Plasma

Nonlinear Landau damping of a broad-band spectrum of electron plasma waves in a bounded plasma

1976 ◽  
Vol 15 (3) ◽  
pp. 371-380 ◽  
Author(s):  
G. Matthieussent
Keyword(s):  
Boundary Value Problem ◽  
Plasma Column ◽  
Broad Band ◽  
Plasma Waves ◽  
Electron Plasma ◽  
Landau Damping ◽  
Band Spectrum ◽  
Bounded Plasma ◽  
Nonlinear Landau Damping ◽  
Geometrical Effects

The nonlinear Landau damping of a broad-band spectrum of electron plasma waves propagating in a plasma column is considered.Finite geometrical effects inherent to the boundary value problem are taken into account. It is shown that nonlinear Landau damping of such a spectrum can be easily observed on a plasma column with a density of the order of 2 × 108 particles cm−3 and an electron temperature of about 3eV.

scholarly journals Magnetohydrodynamic waves in a non-uniform current-carrying plasma column

1974 ◽  
Vol 12 (1) ◽  
pp. 61-69 ◽  
Author(s):  
J. Vaclavik ◽  
E. Weise
Keyword(s):  
Density Gradient ◽  
Plasma Column ◽  
Low Frequency ◽  
Axial Current ◽  
Compressional Waves ◽  
Magnetohydrodynamic Waves ◽  
Uniform Current ◽  
Uniform Plasma

An effect of an axial current on the propagation of low-frequency axisymmetric magnetohydroclynamic waves in a radially non-uniform plasma column was investigated theoretically and experimentally. It was found that the axial current and the density gradient cause a coupling between the torsional and compressional waves.

Suppression of low frequency plasma instabilities in a magnetized plasma column

2005 ◽  
Vol 12 (4) ◽  
pp. 042109 ◽  
Author(s):  
Edward Thomas ◽  
Ashley Eadon ◽  
Edwynn A. Wallace
Keyword(s):  
Plasma Column ◽  
Low Frequency ◽  
Magnetized Plasma ◽  
Plasma Instabilities ◽  
Frequency Plasma

scholarly journals HIGHER RADIAL MODES OF AZIMUTHAL SURFACE WAVES ABOVE THE UPPER-HYBRID FREQUENCY IN CYLINDRICAL WAVEGUIDES PARTIALLY FILLED BY PLASMA

2020 ◽  
pp. 22-25
Author(s):  
I. Girka ◽  
V. Kondratenko
Keyword(s):  
Surface Waves ◽  
Plasma Column ◽  
Particle Density ◽  
Low Frequency ◽  
Magnetoactive Plasma ◽  
Cylindrical Metal ◽  
Cylindrical Waveguides ◽  
Waveguide Design ◽  
The Waves ◽  
Metal Wall

Azimuthal surface waves (ASWs) are known to be eigen waves of cylindrical metal waveguides partially filled by magnetoactive plasma. Zeroth radial modes were under study earlier. Their dispersion properties are known to be significantly influenced by the plasma column properties: its particle density, external axial static magnetic field, geometric dimensions, – rather than properties of the dielectric layer which separates the plasma column from the metal wall. Application of higher order ASWs in the low-frequency range was shown earlier to make it possible to get advantage of exciting ASWs with higher frequency than in the case of zeroth order ASWs without no change in the waveguide design. The present study generalises those investigation for the case of the waves above the upperhybrid frequency.

Ion waves, drift waves and instability in a weakly ionized magnetoplasma

1970 ◽  
Vol 4 (4) ◽  
pp. 693-728 ◽  
Author(s):  
S. A. Self
Keyword(s):  
Wave Propagation ◽  
Low Frequency ◽  
Frequency Wave ◽  
Strong Magnetic Fields ◽  
Acoustic Instability ◽  
Bounded Plasma ◽  
Weakly Ionized ◽  
Ion Waves ◽  
Drift Instability ◽  
Diamagnetic Drift

A unified treatment is given of low-frequency wave propagation in a weakly ionized magnetoplasma from the fluid equations in which ion inertia is retained. An analysis is made of the instabilities which arise due to the influence of drift of the electrons relative to the ions for three cases: (a) Parallel drift, E∥B, (b) Hall drift, E∥B, and (c) Diamagnetic drift, ∇n⊥B. In all cases an ion acoustic instability is found while additionally, for (c), there is a drift instability for strong magnetic fields. The instability boundaries in parameter space are delineated. Furthermore, for a transversely bounded plasma, the roots ω(kzreal) andkz(ω real) of the dispersion relations are discussed and related to experimental observables. The results are applied to an interpretation of wave propagation and instability on a cylindrical positive column for which all three types of drift are simultaneously present. The relation of this work to the inertialess theories of the current-convective and crossed-field instabilities is also discussed.

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