Electrostatic wave phenomena in dusty plasma.
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Date
1995
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Abstract
This thesis is concerned with the some aspects of electrostatic wave phenomena dusty
plasmas. In particular Debye shielding, nonlinear potential structures such as diploar
vortices and solitons are investigated.
The phenomenon of Debye shielding is investigated in a dusty plasma where electrons
and ions have Boltzmann density distributions and the massive, negatively charged
dust grains are taken to be stationary. Small and large amplitude electrostatic potentials
are considered. The existence of nonlinear dipolar-vortex and modified convective
cell structures are examined in an inhomogeneous magnetized dusty plasma.
A study is carried out on arbitrary amplitude rarefactive and compressive solitons in
dusty plasmas. Using the reductive perturbation technique, the kinetic Korteweg-de
Vries equation and the corresponding equation for fluid theory is derived. The investigation
is done on weak (or small amplitude) solitons. Comparisons between the
associated soliton profiles are presented.
Description
Thesis (Ph.D.)-University of Durban-Westville, 1995.
Keywords
Electrostatics., Physics--Research