Abstract:
“Supersolitons,” the structures associated with the stationary solitary solutions with the Mach
number greater than those associated with the double layers, were introduced in 2012. Later,
many researchers have reported the existence domain of the supersolitons in different plasma
constituents. However, their evolutionary dynamical behavior and stability were main concerns
and were not yet explored. We performed fluid simulation of ion acoustic supersolitons in a plasma
containing two-temperature electrons having kappa distributions in the presence of cold fluid ions.
Our simulation shows that a specific form of the initial perturbation in the equilibrium electron
and ion densities can evolve into ion acoustic supersolitons, which maintain their shape and size
during their propagation. This is first-ever simulation to confirm the stability of the supersolitons
that opens a new era in the field of solitary wave structures in space and laboratory plasmas.
