Ions shear flow and electron field-aligned current produce ion acoustic waves in the oxygen-hydrogen ionospheric plasma

Saleem, H.; Shan, S. Ali; Rehman, Aman‐ur

doi:10.1063/1.5000888

Cited by 11 publications

(6 citation statements)

References 43 publications

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“…In order to find the solution of equation (28), we follow the method given by Demiray [40] and shift to a commoving frame…”

Section: Analytical Solution Of Dkp Equationmentioning

confidence: 99%

“…The ionized oxygen ion number density is larger than the hydrogen number density. At the peak of the F-region which is situated at a height of 300 km, the number density of electrons and ions is at its maximum value [5]. Number density of hydrogen ions is dominant at an altitude of 1000 km.…”

Section: Introductionmentioning

confidence: 99%

“…Oxygen hydrogen (OH) plasma is also known as bi ion plasma has in itself been an active area of investigation and many studies have considered different linear and nonlinear modes propagating in such plasmas [26][27][28][29].…”

Section: Introductionmentioning

confidence: 99%

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Damped Kadomtsev Petviashvilli equation for magnetosonic waves in a dissipative OH plasma in the ionospheric F-Layer

Tariq,

Shah,

Kahlon

et al. 2024

Phys. Scr.

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In this paper we study the linear and nonlinear dynamics of magnetosonic waves in a dissipative oxygen-Hydrogen (OH) plasma. It is shown that such waves can propagate nonlinearly as solitary structures for both super and sub, acoustic and Alfvenic regimes. We use the hyperbolic tangent method to solve the collisional Kadomtsev-Petviashvili (KP) equation and a damped solitary wave solution is obtained. Both compressive and rarefactive damped solitary structures are obtained and are significantly affected by the oxygen ion-neutral collision frequency, temperature, propagation angle, and ambient magnetic field present in the F-layer of Earth’s ionosphere.

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“…In order to find the solution of equation (28), we follow the method given by Demiray [40] and shift to a commoving frame…”

Section: Analytical Solution Of Dkp Equationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Damped Kadomtsev Petviashvilli equation for magnetosonic waves in a dissipative OH plasma in the ionospheric F-Layer

Tariq,

Shah,

Kahlon

et al. 2024

Phys. Scr.

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“…Electrostatic DLs in unmagnetized and magnetized plasmas have been studied in electron ion plasma . It has been shown recently that in oxygen‐hydrogen plasma of upper ionosphere, the IAWs are excited by the ion field‐aligned shear flow at several different low frequencies and wavelengths. In the case of negative shear, these waves are modified and are excited by the electron parallel current in the F ‐region ionosphere where T i ≤ T e while T i ( T e ) is ion (electron) temperature.…”

Section: Introductionmentioning

confidence: 99%

Double layers in an inhomogeneous magnetized bi‐ion plasma

Shan

Saleem

2019

Contributions to Plasma Physics

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A simpler analytical approach is employed to obtain energy integral equation for a pseudo‐particle in a pseudo‐potential, which admits double layer (DL) solutions for the non‐linear low‐frequency electrostatic perturbations in non‐uniform plasma consisting of electrons and two kinds of ions. One of the ion species has field‐aligned shear flow and electrons are superthermal kappa distributed. This theoretical model is applied to the upper ionospheric oxygen‐dominated plasma that has small concentration of protons along with upward flow of oxygen ions. Under suitable boundary conditions, both rarefactive (density dip) and compressive (density hump) DLs are obtained solving energy integral equation using the plasma parameters of ionosphere around altitude of 800 km. The amplitude and width of the DLs depend upon the scale lengths of density and temperature gradients as well as on the ratio of equilibrium densities of oxygen and hydrogen.

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“…Ganguli et al 15 suggested that even a small amount of velocity shear in the flow is sufficient to excite a large-scale, Kelvin-Helmholtz mode, and can be a potential source for ion heating through wave generation. Recently, Saleem et al 16 theoretically proved that both ion shear flows and electron field-aligned current (FAC) can produce ion acoustic turbulence, assuming multi-species (O + -H + ) plasmas under realistic ionosphere conditions. Both of these shear-driven mechanisms can contribute to the anomalous resistivity as well.…”

mentioning

confidence: 99%

3DI: A novel ion composition and three-dimensional velocity analyzer for the topside ionosphere

Ogasawara

George

Goldstein

et al. 2020

Sci Rep

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A new ion composition and three-dimensional velocity analyzer, 3-Dimensional ion velocity and mass Imager (3DI), measures 3D velocity distribution functions (VDFs) for each major ion species in Earth's topside ionosphere. The 3DI instrument is composed of a miniaturized electrostatic analyzer (ESA) and a deflector, backed by a static, magnet-based, mass spectrometer. We have developed a micro-pixel read-out anode technique that significantly saves power in the particle detection system, and integrated it into an imaging microchannel plate (MCP). We tested the ESA and deflector, magnet-based mass spectrometer, and anode in the laboratory to demonstrate the 3DI prototype's performance. We have applied numerical calculations to evaluate and discuss 3DI's performance and dynamic range. Due to complexities associated with imaging 3D distribution functions during fast spacecraft motion, we also discuss the operation strategy for 3DI to capture and resolve the VDF within the field of view. Once applied to flight investigations, the 3DI observations will be extremely useful in identifying ionosphere composition, mass-dependent ion transport such as upflows, and massdependent ion heating. Furthermore, the precise measurement of non-thermal plasma VDFs provides information to improve ionospheric environment modeling and ground-based radar observations. We report a new three-dimensional (3D) velocity and composition analyzer, 3-Dimensional ion velocity and mass Imager (3DI), which resolves mass dependent fast flows and non-thermal features in the Earth's topside ionosphere. 3DI measures flow velocities, fluxes, and 3D velocity distribution functions (VDFs) for major ion species. The 3DI instrument is composed of a miniaturized electrostatic analyzer (ESA); a deflector; and a static, magnet-based, mass spectrometer optimized to measure cold plasma when the spacecraft (S/C) ram speed dominates the bulk plasma speed. For the particle detection, a 2-dimensional imaging microchannel plate (MCP) is used with a novel micro-pixel read-out anode technique that can significantly reduce required power. Current state-of-the-art instruments that cover this energy range are the Retarding Potential Analyzer (RPA), the Ion Drift Meter (IDM), ESAs, and hemispherical electrostatic analyzers (HEA). RPAs have a long, successful history of providing in-situ diagnostics of thermal ion spectra in Earth's topside ionosphere 1,2. RPAs produce a planar electric potential barrier to incoming ions. The potential varies by sweeping voltages that are applied to a set of grids. Ions with energies above the barrier are collected by a plate at the back of the instrument and measured as a current. When coupled with S/C velocity and attitude knowledge, current-voltage (I-V) curves provide ion flow speed, temperature, and density under the assumption of isotropic Maxwellian VDFs. Ion drift directions for the cross-track component can be measured using multiple sensor heads, or a segmented collector plate (measuring the current ratios among the segments). Such...

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Ions shear flow and electron field-aligned current produce ion acoustic waves in the oxygen-hydrogen ionospheric plasma

Cited by 11 publications

References 43 publications

Damped Kadomtsev Petviashvilli equation for magnetosonic waves in a dissipative OH plasma in the ionospheric F-Layer

Damped Kadomtsev Petviashvilli equation for magnetosonic waves in a dissipative OH plasma in the ionospheric F-Layer

Double layers in an inhomogeneous magnetized bi‐ion plasma

3DI: A novel ion composition and three-dimensional velocity analyzer for the topside ionosphere

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