Abstract
The ion acoustic (IA) solitary wave (SW) propagation in collisional plasma is presented, in presence of magnetic field. The considered plasma is consisting with mobile positive and negative ions and nonthermal electrons. Using the reductive perturbation technique, the basic set of fluid equations are reduced to a three-dimensional damped Zakharov–Kuznetsov (DZK) nonlinear wave equation. The dissipation generated by ion-neutral collision is taken into the consideration. It is observed that the solitary wave amplitude diminishes with time as the ion-neutral collision frequency increases. Also, the characteristic features of rarefactive solitary wave amplitudes are observed for the parameters like negative ion concentration ratio (\( \mu_{n} \)) and nonthermal electrons (\( \alpha_{e} \)). This analysis is suitable for understanding the astrophysical plasma environments.
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