On the study of ion-acoustic solitary waves and double-layers in a drift multicomponent plasma with electron-inertia

摘要

Using the pseudopotential method, theoretical investigation has been made on the ???rst-order Korteweg-deVries ion-acoustic solitons in a multicomponent plasma consisting of warm positive ions, negative ions and isothermal electrons. The effects of electron-inertia and drift motion of the ions on the amplitudes and widths of the solitons have been studied in a plasma having (H+, Cl-), (H+, O-), (He+, H-) and (He+, O-) ions. Ion-acoustic double-layers have also been investigated for such plasmas. It has been found that drift velocity and electron-inertia have signi???cant contribution on the formation of double-layers in multicomponent plasma.