Kinetic Alfven solitary waves in a magnetized plasma with superthermal electrons

A study of the ion Larmor radius effects on the solitary kinetic Alfven waves (SKAWs) in a magnetized plasma with superthermal electrons is presented by employing the kinetic theory. The linear dispersion relation of SKAW is shown to depend on the superthermal parameter κ, ion to electron temperatur...

Full description

Saved in:
Bibliographic Details
Published in:Physics of plasmas 2015-09, Vol.22 (9)
Main Authors: Panwar, A., Ryu, C. M., Bains, A. S.
Format: Article
Language:English
Subjects:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ALFVEN WAVES
AMPLITUDES
ASTROPHYSICS
DISPERSION RELATIONS
Electron energy
ELECTRON TEMPERATURE
ELECTRONS
ENERGY BALANCE
IONS
Kinetic theory
LARMOR RADIUS
Magnetohydrodynamics
Parameters
PARTICLES
PLASMA
Plasma physics
POTENTIALS
Solitary waves
SOLITONS
Temperature ratio
Wave propagation
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A study of the ion Larmor radius effects on the solitary kinetic Alfven waves (SKAWs) in a magnetized plasma with superthermal electrons is presented by employing the kinetic theory. The linear dispersion relation of SKAW is shown to depend on the superthermal parameter κ, ion to electron temperature ratio, and the angle of wave propagation. Using the Sagdeev potential approach, the energy balance equation has been derived to study the dynamics of SKAWs. The effects of various plasma parameters are investigated for the propagation of SKAWs. It is shown that only compressive solitons can exist and in the Maxwellian limit our results are in good agreement with previous studies. Further, the characteristics of small amplitude SKAWs are investigated. Present study could be useful for the understanding of SKAWs in a low β plasma in astrophysical environment, where particle distributions are superthermal in nature.
ISSN:1070-664X
1089-7674
DOI:10.1063/1.4931993