On the analytical soliton approximations to damping forced Zakharov-Kuznetsov equation arising in dissipative nonthermal magnetized plasma

This paper aims to analyse the nonlinear characteristics of ion-acoustic solitary waves (IASWs) in a plasma system that is collisional and homogeneous in nature. The system under consideration comprises positive ions, negative ions, and nonthermal electrons and is influenced by an ambient magnetic field. To analyse the system, we utilize the reductive perturbation technique (RPT) and obtain the damped forced Zakharov-Kuznetsov (DFZK) equation. The DFZK equation provides a solitary wave solution when an external periodic force is present. Through numerical analysis of DFZK, we have observed that different parameters, e.g., the nonthermal parameters (r, q), the direction cosine, the temperature ratio of a positive ion to an electron, the temperature ratio of a negative ion to an electron, the density ratio of a negative ion to a positive ion source strength, and the source frequency, affect the phase velocity and the structures of IASWs significantly. This finding could help clarify the plasmas observed in the D- and F-regions of Earth’s ionosphere, as well as in laboratory experiments where pair ions and nonthermal electrons are key characteristics.