Nonlinear Phenomena, Turbulence, Transport Effects of Ion drift on small-amplitude ion-acoustic solitons

Some properties of small‐amplitude ion‐acoustic solitons in a plasma consisting of nondrifting electrons and drifting ions are investigated. Electron inertia effects are shown to be considerably more important than relativistic effects. It is also shown that ion‐acoustic soliton solutions exist only if the ion drift velocity is less than the electron thermal velocity.