Oblique propagation of arbitrary amplitude ion acoustic solitary waves in anisotropic electron positron ion plasma

• DOI: 10.3389/fphy.2023.1144175
• Publication Date: 2023-03-01T07:09:36Z
• Authors: Almas; Ata-ur-Rahman; Muhammad Khalid; Sayed M. Eldin
• Keywords: Ion acoustic wave; Materials Science (miscellaneous); QC1-999; Positron; Biophysics; Nuclear physics; General Physics and Astronomy; Sagdeev approach; Electron; Quantum mechanics; Atomic physics; Plasma; Context (archaeology); Soliton; Ion-Acoustic Solitons; Physical and Theoretical Chemistry; Ion; Biology; Mathematical Physics; positrons; Pseudopotential; Physics; Nonlinear Solitary Waves; Dusty Plasmas: Interdisciplinary Research Field; Paleontology; Astronomy and Astrophysics; Optics; magnetized plasma; FOS: Earth and related environmental sciences; Study of Earthquake Precursor Phenomena; Atomic and Molecular Physics, and Optics; Adiabatic process; Earth and Planetary Sciences; pressure anisotropy; Space Weather and Magnetospheric Physics; Geophysics; Physics and Astronomy; solitary waves; Physical Sciences; Nonlinear system; Anisotropy; Ionospheric Anomalies

The oblique propagation of arbitrary ion acoustic solitary waves (IASWs) in magnetized electron-positron-ion plasmas is investigated by employing Sagdeev pseudopotential approach. Ions are assumed to be adiabatic having anisotropic thermal pressure. Electrons and positrons are considered to be isothermal, following Maxwellian distribution. In terms of electrostatic potential, Sagdeev potential function is obtained and analyzed numerically in the context of relevant plasma configuration parameters. The existence region of solitary pulses is defined accurately. It is investigated how several plasma configuration parameters, such as the positron concentration, parallel, and perpendicular ion pressure affect soliton characteristics.