In this paper, the modulational instability (MI) of high-frequency electron-acoustic waves (EAWs) is reported in a non-Maxwellian plasma composed two distinct types electrons and stationary ions. One type treated as cold inertial fluid, whereas other considered inertialess species following κ-deformed Kaniadakis distribution. The fluid equations to current model are reduced via reductive perturbation technique nonlinear Schrödinger equation, which then used compute MI growth rate EAWs. It...

We have studied the propagation of ion acoustic shock waves involving planar and non-planar geometries in an unmagnetized plasma, whose constituents are non-degenerate ultra-cold ions, relativistically degenerate electrons, positrons. By using reductive perturbation technique, Korteweg–deVries Burger modified equations derived. It is shown that only compressive can propagate such a plasma system. The effects geometry, kinematic viscosity, positron concentration examined on potential electric...

The ion acoustic cnoidal waves (IACWs) are investigated in a magnetized anisotropic electron plasma with superthermal distribution. ions warm and manifest pressure anisotropy. reductive perturbation technique is used to explicitly derive the Korteweg–de Vries (KdV) equation which shows existence evolution of (CWs). upshot various physical parameters on properties IACWs considered at length. relevance present investigation magnetosphere near Earth magnetosheath pointed out.

Abstract The propagation of electrostatic dust-ion-acoustic nonlinear periodic waves is investigated in dusty plasma wherein electrons follow Kaniadakis distribution. Korteweg–de Vries (KdV) and modified (mKdV) equations are derived by employing reductive perturbation method their cnoidal wave solutions analysed. effect relevant parameters (viz., κ -deformed parameter dust concentration β ) on the dynamics structures discussed. Further it found that amplitude compressive increases with...

This study examines the nonlinear dynamics of high-frequency electron–acoustic waves (EAWs) in a collisionless, unmagnetized plasma consisting several components, including inertial cold electrons, an electron beam, and inertialess Cairns-distributed hot electrons addition to background stationary ions. We use pseudopotential (Sagadeev potential) method investigate possibility stationary-profile solitons (EASs). In this study, nonthermal parameter, temperature ratio between density ratios,...

In this paper, we investigate the properties of ion-acoustic waves (IAWs) with finite orbital angular momentum (OAM) modes in a collisionless, unmagnetized, and homogeneous non-relativistic plasma comprised degenerate electron species inertial ions. Utilizing fluid model, derive linear paraxial equation for ion density perturbations, where electric field is decomposed into cylindrical components to reveal helical, non-planar wave structure. The electrostatic potential expressed...

In this paper, small but finite amplitude electrostatic solitary waves in a relativistic degenerate magnetoplasma, consisting of relativistically electrons and non-degenerate cold ions, are investigated. The Zakharov-Kuznetsov equation is derived employing the reductive perturbation technique its wave solution analyzed. It shown that only compressive structures can propagate such plasma system. effects number density, ion cyclotron frequency, direction cosines on profiles acoustic...

The dispersion relation (DR) and Landau damping of basic electrostatic modes propagating in an electron-ion plasma modeled by a Cairn's distribution with spectral index α are kinetically investigated. In the high-frequency range, i.e., ω/k>vte, DR electron Langmuir wave (LW) obtained. low-frequency range where vte>ω/k>vti, ion acoustic (IAW) is phase velocity both IAWs shown to be significantly influenced nonthermality parameter α.

By employing the reductive perturbation technique, propagation of cylindrical and spherical ion acoustic solitary waves is studied in an unmagnetized dense relativistic plasma, consisting relativistically degenerate electrons cold fluid ions. A modified Korteweg-de-Vries equation derived its numerical solutions have been analyzed to identify basic features electrostatic structures that may form such a Fermi plasma. Different degrees electron degeneracy are discussed compared. It found...

Laser or electromagnetic radiation, in general, interacts with plasma very interesting ways. In most cases, they induce orbital angular momentum (OAM) such plasmas due to their polarization effects. Dust-ion-acoustic waves (DIAWs) immovable dust particles are studied the effect of rotation produced laser interaction. The electrons considered non-Maxwellian limit, inertial ions and static grains possessing negative charges. Fluid theory is employed for obtaining linear paraxial equation...

This work investigates the characteristics of nonlinear large-amplitude ion-acoustic waves that occur and propagate in a non-Maxwellian plasma consisting inertial ions electrons beam as well inertialess Cairns-distributed electrons. For this purpose, inquiry utilizes two-fluid model with Sagdeev pseudopotential technique. By utilizing pseudopotential, mathematical equation similar to an energy balance is derived. The effects related physical parameters, including electron concentration,...

The linear and nonlinear properties of the ion-acoustic (IA) waves are investigated in a relativistically degenerate magnetoplasma, whose constituents electrons, positrons, ions. electrons positrons assumed to obey Fermi-Dirac statistics, whereas cold ions taken be inertial magnetized. In analysis, various limiting cases discussed both analytically numerically. However, for studies, well-known reductive perturbation technique is employed derive Zakharov-Kuznetsov Burgers equations presence...

Abstract Electron acoustic (EA) solitary waves (SWs) are studied in an unmagnetized plasma consisting of hot electrons (following Cairns-Tsalli distribution), inertial cold electrons, and stationary ions. By employing a reductive perturbation technique (RPT), the nonlinear Korteweg–de Vries (KdV) equation is derived its SW solution analyzed. Here, effects parameters such as nonextensivity parameter ( q ), nonthermality α cold-to-hot electron density ratio β ) investigated.

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 considered isothermal, following Maxwellian distribution. In terms electrostatic potential, potential function obtained analyzed numerically the context relevant plasma configuration parameters. existence region pulses...

The propagation of ion-acoustic (IA) solitary and rogue waves is investigated in a two-dimensional ultrarelativistic degenerate warm dense plasma. By using the reductive perturbation technique, cylindrical Kadomtsev–Petviashvili (KP) equation derived, which can be further transformed into Korteweg–de Vries (KdV) equation. latter admits wave solution. However, when frequency carrier much smaller than ion plasma frequency, KdV transferred to nonlinear Schrödinger study evolution modulationally...

The Landau damping rate of dust ion acoustic waves (DIAWs) propagating in an electron-dust-ion plasma is kinetically investigated from both analytical and numerical perspectives. We have carried out the investigation linear DIAWs unmagnetized collisionless nonthermal plasma. Electrons ions are assumed to be Cairns distributed while particles at rest. nonthermality effects due electrons incorporated via spectral index (0 ≤ α < 1). key configuration parameters, namely parameter concentration,...