Ion acoustic wave
View article: Transverse spin and surface waves in acoustic metamaterials
Transverse spin and surface waves in acoustic metamaterials Open
We consider spin angular momentum density in inhomogeneous acoustic fields:\nevanescent waves and surface waves at interfaces with negative-density\nmetamaterials. Despite being purely longitudinal (curl-free), acoustic waves\npossess intr…
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The Interaction between Surface Acoustic Waves and Spin Waves: The Role of Anisotropy and Spatial Profiles of the Modes Open
The interaction between different types of wave excitation in hybrid systems is usually anisotropic. Magnetoelastic coupling between surface acoustic waves and spin waves strongly depends on the direction of the external magnetic field. Ho…
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Rich eight-branch spectrum of the oblique propagating longitudinal waves in partially spin-polarized electron-positron-ion plasmas Open
We consider the separate spin evolution of electrons and positrons in electron-positron and electron-positron-ion plasmas. We consider the oblique propagating longitudinal waves in these systems. Working in a regime of high-density n(0) ∼ …
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Surface spin-electron acoustic waves in magnetically ordered metals Open
Degenerate plasmas with motionless ions show existence of three surface waves: the Langmuir wave, the electromagnetic wave, and the zeroth sound. Applying the separated spin evolution quantum hydrodynamics to half-space plasma, we demonstr…
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Experimental observation of electron-acoustic wave propagation in laboratory plasma Open
In the field of fundamental plasma waves, the direct observation of electron-acoustic wave (EAW) propagation in laboratory plasmas remains a challenging problem, mainly because of heavy damping. In the Magnetized Plasma Linear Experimental…
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Dynamic structures of nonlinear ion acoustic waves in a nonextensive electron–positron–ion plasma Open
The dynamic structures of ion acoustic waves in an unmagnetized plasma with q-nonextensive electrons and positrons are investigated applying the bifurcation theory of planar dynamical systems through direct approach. Model equations are tr…
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Acoustic radiation force on small spheres due to transient acoustic fields Open
Acoustic radiation force is a net force experienced by an object under the action of an acoustic wave. Most theoretical models require the acoustic wave to be periodic, if not purely monofrequency, and are therefore irrelevant for the stud…
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Nonlinear Ion-acoustic Waves, Ion Holes, and Electron Holes in the Near-Sun Solar Wind Open
Nonlinear ion-acoustic waves, ion holes, and electron holes have been observed on the Parker Solar Probe at a heliocentric distance of 35 solar radii. These time domain structures contain millisecond duration electric field spikes of sever…
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Simultaneous Trapping of Electromagnetic Ion Cyclotron and Magnetosonic Waves by Background Plasmas Open
Electromagnetic ion cyclotron waves and fast magnetosonic waves are found to be simultaneously modulated by background plasma density: both kinds of waves were observed in high plasma density regions but vanished in low‐density regions. Th…
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Nonlinear dust-acoustic solitary waves and shocks in dusty plasmas with a pair of trapped ions Open
The propagation characteristics of small-amplitude dust-acoustic (DA) solitary waves (SWs) and shocks are studied in an unmagnetized dusty plasma with a pair of trapped positive and negative ions. Using the standard reductive perturbation …
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Spin-electron acoustic waves: The Landau damping and ion contribution in the spectrum Open
Separated spin-up and spin-down quantum kinetics is derived for more detailed research of the spin-electron acoustic waves (SEAWs). This kinetic theory allows us to obtain the spectrum of the SEAWs including the effects of occupation of qu…
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Exchange interaction effects on waves in magnetized quantum plasmas Open
We have applied the many-particle quantum hydrodynamics that includes the Coulomb exchange interaction to magnetized quantum plasmas. We considered a number of wave phenomena that are affected by the Coulomb exchange interaction. Since the…
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Head-on collision of ion-acoustic multi-solitons and study of rogue waves in electron-beam superthermal plasma Open
In this investigation, head-on collision of ion-acoustic (IA) multi-solitons and study of characteristics of ion acoustic rogue waves in an unmagnetized plasma which includes ion fluid, superthermal hot electrons, and penetrated by electro…
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Solitary ion acoustic waves in a plasma with regularized <i>κ</i>-distributed electrons Open
This work has been focused on the investigation of the existence conditions and the characteristics of ion acoustic soliton (IAS) in a plasma, which is composed of cold ions and regularized κ-distributed electrons. It is found that the pro…
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Multi-dimensional dynamics of stimulated Brillouin scattering in a laser speckle: Ion acoustic wave bowing, breakup, and laser-seeded two-ion-wave decay Open
Two- and three-dimensional particle-in-cell simulations of stimulated Brillouin scattering (SBS) in laser speckle geometry have been analyzed to evaluate the relative importance of competing nonlinear processes in the evolution and saturat…
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Large-amplitude, Wideband, Doppler-shifted, Ion Acoustic Waves Observed on the Parker Solar Probe Open
Electric field spectra measured on the Parker Solar Probe typically contain upwards of 1000 large-amplitude (∼15 mV m −1 ), wideband (∼100–15,000 Hz), few-second-duration, electric field waveforms per day. The satellite also collected abou…
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Triggered Ion-acoustic Waves in the Solar Wind Open
For more than 12 hr beginning on 2021 January 18, continuous narrowband electrostatic emissions were observed on the Parker Solar Probe near 20 solar radii. The observed <1000 Hz frequencies were well below the local ion-plasma frequency. …
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Modulation of electron-acoustic waves in a plasma with kappa distribution Open
In the present work, employing a one dimensional model of an unmagnetized collisionless plasma consisting of a cold electron fluid, hot electrons obeying κ velocity distribution, and stationary ions, we study the amplitude modulation of an…
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Heating of a Quiet Region of the Solar Chromosphere by Ion and Neutral Acoustic Waves Open
Using high-resolution numerical simulations we investigate the plasma heating\ndriven by periodic two-fluid acoustic waves that originate at the bottom of the\nphotosphere and propagate into the gravitationally stratified and partially\nio…
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Structure of analytical ion-acoustic solitary wave solutions for the dynamical system of nonlinear wave propagation Open
In the present study, the ion-acoustic solitary wave solutions for Kadomtsev–Petviashvili (KP) equation, potential KP equation, and Gardner KP equation are constructed. The nonlinear KP equations are studying the nonlinear process of waves…
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Contribution of the generalized (<i>r</i>, <i>q</i>) distributed electrons in the formation of nonlinear ion acoustic waves in upper ionospheric plasmas Open
The properties of ion acoustic solitary and periodic structures are studied in magnetized two-ion component (O+ − H+ − e) plasmas with (r, q) distributed electrons. It is found that two modes of ion acoustic waves, namely, fast and slow mo…
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Ion-acoustic shocks with self-regulated ion reflection and acceleration Open
An analytic solution describing an ion-acoustic collisionless shock, self-consistently with the evolution of shock-reflected ions, is obtained. The solution extends the classic soliton solution beyond a critical Mach number, where the soli…
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Longitudinal and Transverse Instability of Ion Acoustic Waves Open
Ion acoustic waves are found to be susceptible to at least two distinct decay processes. Which process dominates depends on the parameters. In the cases examined, the decay channel where daughter modes propagate parallel to the mother mode…
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Study on Abundant Dust-Ion-Acoustic Solitary Wave Solutions of a (3+1)-Dimensional Extended Zakharov–Kuznetsov Dynamical Model in a Magnetized Plasma and Its Linear Stability Open
This article examines how shocks and three-dimensional nonlinear dust-ion-acoustic waves propagate across uniform magnetized electron–positron–ion plasmas. The two-variable (G′/G,1/G)-expansion and generalized exp(−ϕ(ξ))-expansion techniqu…
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Temperature-controlled acoustic surface waves Open
Conventional approaches to the control of acoustic waves propagating along boundaries between fluids and hard grooved surfaces are limited to the manipulation of surface geometry. Here we demonstrate for the first time, through theoretical…
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Excitation of nonlinear ion acoustic waves in CH plasmas Open
Excitation of nonlinear ion acoustic wave (IAW) by an external electric field is demonstrated by Vlasov simulation. The frequency calculated by the dispersion relation with no damping is verified much closer to the resonance frequency of t…
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Investigation and Analysis of Acoustojets by Spectral Element Method Open
In this study, acoustic wave scattering in a homogeneous media by an obstacle is examined in the case of plane wave excitation and the formation of acoustic jets is explored. Spectral element method (SEM) is employed for the approximate so…
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Fluid nonlinear frequency shift of nonlinear ion acoustic waves in multi-ion species plasmas in the small wave number region Open
The properties of the nonlinear frequency shift (NFS), especially the fluid NFS from the harmonic generation of the ion-acoustic wave (IAW) in multi-ion species plasmas, have been researched by Vlasov simulation. Pictures of the nonlinear …
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Dust-Ion-Acoustic Rogue Waves in a Dusty Plasma Having Super-Thermal Electrons Open
The standard nonlinear Schrödinger Equation (NLSE) is one of the elegant equations to find detailed information about the modulational instability criteria of dust-ion-acoustic (DIA) waves and associated DIA rogue waves (DIARWs) in a three…
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Ion-acoustic shock waves in a magnetized plasma featuring super-thermal distribution Open
A theoretical investigation has been made on the propagation of ion-acoustic shock waves in a magnetized pair-ion plasma having inertial warm positive and negative ions and inertialess super-thermal electrons and positrons. The well known …