An ion-acoustic soliton is a stable, localized wave packet that propagates through a plasma, characterized by the balance of nonlinearity and dispersion. This type of soliton arises in a plasma consisting of ions and electrons, where the ion acoustic speed serves as the wave speed, allowing these structures to maintain their shape over long distances while traveling at a constant speed.
congrats on reading the definition of ion-acoustic soliton. now let's actually learn it.