effect of energetic electrons on dynamic motion of ion-acoustic waves in the presence of external periodic force

The dynamic motions of ion-acoustic (ia) waves in plasma are studied by considering the kappa-cairns electron distribution. the effect of external periodic force is also considered, here. using the reductive perturbation technique, a korteweg-de vries (k-dv) equation is obtained. the quasiperiodic motions of ia waves are investigated by considering two-dimensional phase portraits and time-series analysis. the effects of non--thermal parameters (i.e., κ, α) and the strength (f0) of the external periodic force on nonlinear travelling wave structures are also discussed.