الفهرس 
Acoustic modes in dusty plasmasOnly 14 pages are availabe for public view
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Abstract
In the first part of the thesis, the nonlinear propagation of dust ion
acoustic waves (DIAWs) in a collisional dusty plasma which consists of
variable-negatively charged small dust grains, positively charged ions,
isothermal electrons with background neutral particles is investigation.
The low rates, compared to the ion oscillation frequency of the charge
fluctuation dynamics of the dust grains, the ionization, the ion-neutral,
and the dust-neutral collisions (i.e., weak dissipations) are considered.
Using the reductive perturbation technique, a damped Korteweg–de Vries
(DKdV) equation is derived. On the other hand, the dynamics of solitary
waves at a critical phase velocity is governed by a damped modified
Korteweg–de Vries (DMKdV) equation. Also, the charge fluctuation
dynamics of the dust grains is considered. The effects of the collisions of
ions with dust grains and with the background neutral particles,
ionization, ion loss and the charge fluctuation dynamics of the dust grains
on the DIAWs are studied.