Dynamic behavior of positron acoustic multiple-solitons in an electron–positron-ion plasma

• DOI: 10.1007/s11082-024-06289-8
• Publication Date: 2024-02-03T13:02:26Z
• Authors: Md. Abdus Salam; M. Ali Akbar; M. Zulfikar Ali; Mustafa Inc
• Keywords: Positron; Physics; Dusty Plasmas: Interdisciplinary Research Field; Nuclear physics; Astronomy and Astrophysics; FOS: Earth and related environmental sciences; 01 natural sciences; Electron; Quantum mechanics; Atomic and Molecular Physics, and Optics; Atomic physics; Earth and Planetary Sciences; Plasma; Geophysics; Space Weather and Magnetospheric Physics; Physics and Astronomy; 0103 physical sciences; Physical Sciences; Mantle Dynamics and Earth's Structure; Ion-Acoustic Solitons; Ion

Abstract We explore the dynamic characteristics of positron acoustic multiple-solitons in an unmagnetized plasma containing mobile cold positrons, Kappa-distributed superthermal hot electrons and stationary positive ions. This study investigates overtaking collisional effects, various parametric impacts, phase shifts electron–positron-ion (e-p-i) plasma. Through reductive perturbation technique, we derived Korteweg-de Vries (KdV) equation modified (mKdV) equation. The multiple-soliton solutions (MSS) are then obtained using simplified Hirota method Cole-Holf transformation. investigation shows that amplitudes widths multi-solitons decrease with increasing concentration but increase electron index parameter. results expected to help us understand dynamics waves propagation pulsar magnetosphere, active galactic nuclei, quasar’s relativistic jet, inner region accretion disk surrounding a black hole, etc.