Head-on collisional effects of ion acoustic waves in pair-ion plasma: topological and non-topological solitons
Article
Alam, MS, Talukder, MR. (2021). Head-on collisional effects of ion acoustic waves in pair-ion plasma: topological and non-topological solitons
. 75(1), 10.1140/epjd/s10053-020-00006-2
Alam, MS, Talukder, MR. (2021). Head-on collisional effects of ion acoustic waves in pair-ion plasma: topological and non-topological solitons
. 75(1), 10.1140/epjd/s10053-020-00006-2
Abstract: 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 (H+, Xe+ and K+) and negative (H-, SF6-, O2- and C7F14-) 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 K+-C7F14- 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. Graphic abstract: [Figure not available: see fulltext.].
