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Chapter 4

Three Dimensional Cylindrical Dust

Acoustic Solitons in a

Two-Temperature Charged Dusty

Grains Plasma

Most of the previous investigations in this thesis are related to the un-
bounded planar geometry. This is not a realistic manner in laboratory and

space plasma. So we will consider in this chapter the nonplanar (cylindri-

cal) geometry. However, a few theoretical studies discussed the properties
of dusty plasma waves in a nonplanar geometry [13, 146-148]. The 3D-

CKP equation in dusty plasma with superthermal two - temperature ions

introduced by Borhanian and Shahmansouri [149]. They found that the

wave properties in bounded nonplanar cylindrical geometry are different
from that of the unbounded planar geometry. In this chapter the model

investigated by Selim et al. [148] is extended to include the generalized

cylindrical geometry. The organization of this chapter is as follows. In
Sec. 4.2, we present the basic equations. In Sec. 4.3, we use the nonlinear

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