Oblique Collision of Ion Acoustic Solitons in Magnetized Pair-Ion Plasma Containing Tsallis Distributed Electrons

Two obliquely interacting ion-acoustic solitons are studied in a magnetized electronegative plasma, characterized by Cairns–Tsallis distributed electrons. For this purpose, an extended Poincaré–Lighthill–Kuo method is employed to derive two Korteweg–de Vries equations and the corresponding phase shifts associated with the oblique interaction. The solitons’ phase shifts are found to be dependent upon the physical parameters including nonextensive and nonthermal parameters, ion-to-electron mass ratio, propagation angle, and magnetic field strength. Typical parameters for the (Ar ⁺ , SF ₆⁻ ) and (Xe ⁺ , SF ₆⁻ ) plasma systems are selected to investigate how the mass ratio of positive to negative ions and the density ratio of negative to positive ions influence the soliton structure and associated phase shifts. The results demonstrate that these parameters significantly influence both the phase shifts and the trajectories of the two ion-acoustic solitons. Evidently, this more realistic model is helpful for interpreting the ion-acoustic soliton waves in magnetized plasma experiments and space observations.