Abstract
There have been some interests recently in studying the propagation of an ion acoustic soliton in a plasma consisting of two components in electron temperature, each with its unique electron temperature Th and Tc and density Neh and Nec. The addition of the second component opens the possibility of excitation and propagation of both a compressive and rarefactive soliton. The ion acoustic soliton propagation can be described in terms of a Sagdeev potential U(Φ) with hot and cold electrons. The most striking features are that 1) in the compressive soliton, the characteristics between the Mach number μ and the normalized alnplitude eΦ/(kTh) are reversed when T=Th/Tc varies, and 2) in the rarefactive soliton, they are reversed when N=Neh/Nec varies.
In this paper Sagdeev potential is analyzed to clarify the property of above-mentioned compressive and rarefactive solitons.
