scholarly journals Assessment of the applicability of the cold plasma dispersion relation of slot region hiss based on Van Allen Probes observations

2021 ◽  
Vol 0 (0) ◽  
pp. 0-0
Author(s):  
◽  
◽  
Keyword(s):  
Dispersion Relation ◽  
Cold Plasma ◽  
Van Allen Probes ◽  
Plasma Dispersion

scholarly journals Dispersion relation of electromagnetic ion cyclotron waves using Cluster observations

2013 ◽  
Vol 31 (8) ◽  
pp. 1437-1446 ◽  
Author(s):  
I. P. Pakhotin ◽  
S. N. Walker ◽  
Y. Y. Shprits ◽  
M. A. Balikhin
Keyword(s):  
Dispersion Relation ◽  
Wave Vector ◽  
Cold Plasma ◽  
High Plasma ◽  
Minimum Variance ◽  
Ion Cyclotron Waves ◽  
Hot Plasma ◽  
Ion Cyclotron ◽  
Electromagnetic Ion Cyclotron Waves ◽  
Plasma Dispersion

Abstract. Multi-point wave observations on Cluster spacecraft are used to infer the dispersion relation of electromagnetic ion cyclotron (EMIC) waves. In this study we use a phase differencing method and observations from STAFF and WHISPER during a well-studied event of 30 March 2002. The phase differencing method requires the knowledge of the direction of the wave vector, which was obtained using minimum variance analysis. Wave vector amplitudes were calculated for a number of frequencies to infer the dispersion relation experimentally. The obtained dispersion relation is largely consistent with the cold plasma dispersion relation. The presented method allows inferring the dispersion relation experimentally. It can be also used in the future to analyse the hot plasma dispersion relation of waves near the local gyrofrequency that can occur under high plasma beta conditions.

Improved derivation of the modified BGK collision term and applications to the Hall effect and cold plasma dispersion relation

1983 ◽  
Vol 30 (3) ◽  
pp. 371-387 ◽  
Author(s):  
M. Nagata
Keyword(s):  
Dispersion Relation ◽  
Hall Effect ◽  
Cyclotron Resonance ◽  
Velocity Vector ◽  
Cold Plasma ◽  
Collision Frequency ◽  
Collision Term ◽  
Macroscopic Equation ◽  
Plasma Dispersion ◽  
The Magnetic Field

We improve our previously derived addition to the BGK collision term, and express it in a simple form. The collision frequency for scattering now depends anisotropically on the velocity vector. We also apply the improved macroscopic equation of momentum flow to the Hall effect, the cold plasma dispersion relation and the cyclotron resonance. The Hall coefficient which is constant in the case of the BGK collision term now depends on the magnetic field. It is also shown that, compared with the almost symmetric classical curves of cyclotron resonance, the new curves are considerably asymmetric and their half-widths are about 3/2 times the classical ones.

Relativistic plasma dispersion relation

1969 ◽  
Vol 11 (11) ◽  
pp. 899-902 ◽  
Author(s):  
B N A Lamborn
Keyword(s):  
Dispersion Relation ◽  
Relativistic Plasma ◽  
Plasma Dispersion

The plasma dispersion relation near the two–ion hybrid resonance

1982 ◽  
Vol 27 (2) ◽  
pp. 327-342 ◽  
Author(s):  
S. C. Chiu ◽  
V. S. Chan ◽  
J. Y. Hsu ◽  
D. G. Swanson
Keyword(s):  
Wave Equation ◽  
Critical Temperature ◽  
Dispersion Relation ◽  
Cyclotron Frequency ◽  
Hydrogen Plasma ◽  
Fast Mode ◽  
Temperature Ratio ◽  
Hybrid Layer ◽  
Hybrid Resonance ◽  
Plasma Dispersion

The dispersion relation of a deuterium –hydrogen plasma is investigated near the ion cyclotron frequency of hydrogen at varying hydrogen temperatures. It is found that at low hydrogen-to-deuterium temperature ratios, only the fast mode and the ion Bernstein mode are coupled around the hybrid layer. Above a certain critical temperature ratio Th< Thc, these two modes become coupled also to a third mode. Around and above Thc, the wave equation is of sixth order rather than of the fourth order previously discussed.

scholarly journals Cold plasma dispersion surfaces

1979 ◽  
Vol 21 (2) ◽  
pp. 205-224 ◽  
Author(s):  
M. E. Oakes ◽  
R. B. Michie ◽  
K. H. Tsui ◽  
J. E. Copeland
Keyword(s):  
Group Velocity ◽  
Cold Plasma ◽  
Three Dimensional ◽  
Plasma Waves ◽  
Geometrical Interpretation ◽  
Anisotropic Plasma ◽  
Clear Picture ◽  
Plasma Dispersion

Three-dimensional plots of dispersion in a cold anisotropic plasma are presented. The ω(κ, θ) surfaces provide a clear picture of the behaviour of cold plasma waves as the direction of propagation is varied. The group velocity (dω/dκ) has a simple geometrical interpretation on the surfaces.

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