https://doi.org/10.1140/epjd/s10053-020-00006-2
Regular Article - Plasma Physics
Head-on collisional effects of ion acoustic waves in pair-ion plasma: topological and non-topological solitons
1
Department of Mathematics, Chittagong University of Engineering and Technology, 4349, Chittagong, Bangladesh
2
Plasma Science and Technology Lab, Department of Electrical and Electronic Engineering, University of Rajshahi, 6205, Rajshahi, Bangladesh
Received:
17
May
2020
Accepted:
2
November
2020
Published online:
21
January
2021
The phenomena concerning head-on collision between the two topological and non-topological solitons are investigated in unmagnetized and collisionless plasma system consisting of weakly relativistic cold positive (
, 
and 
) and negative (
, 
, 
and 
) ion species with superthermal electrons. To do this, the two-sided Korteweg–de Vries (KdV) equations are derived using extended Poincaré–Lighthill–Kue method. The solutions of KdV equations are obtained by solitary ansatz technique. Productions as well as collisional effects of non-topological and topological solitons are investigated taking the experimentally obtained plasma parameters into accounts. The study reveals that the nonlinearity of non-topological solitons become more pronounced for 
plasma as compared to the other ionic species plasmas. The masses and densities of negative ion species play a vital role on the potential profiles of topological solitons. A new type large amplitude wave is produced in the colliding region due to collision depending on plasma parameters.
© EDP Sciences, SIF and Springer-Verlag GmbH Germany, part of Springer Nature 2021
