Solitary waves in a plasma with oppositely charged dust (heavier, pair ions) and kappa modeled lighter ions and electrons

Sebastian, Sijo; Sreekala, G.; Michael, Manesh; Abraham, Noble P.; Renuka, G.; Venugopal, Chandu

doi:10.1088/0031-8949/90/3/035601

Cited by 7 publications

(2 citation statements)

References 39 publications

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“…The plasma of a comet is made of a pair of Oxygen ions (ion-pair), light ion (Hydrogen ion) and electrons with distinct temperatures. Manesh et al studied the propagation of ion (lighter and heavier) acoustic solitary waves for both magnetized and unmagnetized five components plasma system composed of Hydrogen ions, positively and negatively charged Oxygen ions, kappa described hot solar electrons, and slightly colder cometary electrons [8,16,17]. Thus, for the sake of accuracy, a well-defined plasma system describing a comet should contain five, at least, components.…”

Section: Introductionmentioning

confidence: 99%

A fully nonlinear solitary wave in six-component dusty cometary plasma

Bedeir¹,

Abulwafa²,

Elhanbaly³

et al. 2021

Phys. Scr.

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The dynamics of fully nonlinear structure of six-component dusty cometary plasma system with the help of Sagdeev pseudo-potential techniques have been investigated. This plasma system is made up of Oxygen (positively and negatively charged) ion pair, negatively charged dust particles, and kappa distributed ions of Hydrogen, hot solar electrons and slightly colder cometary electrons. The linear analysis is carried out and the linear dispersion relation is obtained and investigated with some relevant plasma parameters. As a result, the velocities in the fluid equations are normalized to a general acoustic speed instead of the particular form of acoustic speed. Employing pseudo-potential approach, the basic equations of plasma system were reduced to a single nonlinear ordinary differential equation (energy-balance). By means of Sagdeev potential curves and bifurcation analysis of phase-portrait, the existence and propagation of nonlinear waves are examined. In addition to the periodic solution, it is shown that the localized negative and positive amplitude electrostatic pulses may (co-) exist and propagate in plasma system depending on the Mach number intervals. The impact of some intrinsic plasma parameters on the main features of the solitary wave electrostatic potential profile and the associated electrostatic field are extensively investigated. The results of this research are relevant to plasmas in both laboratory plasmas and exclusively in space plasmas as, comet tails, rings of giant planets, solar wind, interstellar clouds, etc.

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Section: Introductionmentioning

confidence: 99%

A fully nonlinear solitary wave in six-component dusty cometary plasma

Bedeir¹,

Abulwafa²,

Elhanbaly³

et al. 2021

Phys. Scr.

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“…A.和 Shukla P. K.用 Sagdeev 势方法研究了强耦合尘埃等离子体中任意振幅的尘埃声孤波 [21] ; Hatami M. M.等人则使用 Sagdeev 势方法研究了双温非广延电子对离子双层结构的影响 [22] ; El-Hanbaly A. M.等人利用 Sagdeev 势方法研究了具有超热电子和非广延离子的尘埃等离子体中非线性尘埃声波的传播特征 [23] ; Sebastian S.等人则通过 Sagdeev 势方法研究了五分量等离子体中压缩孤立波和稀疏孤立波的存在及孤立波的传播特征 [24] . 由此不难看出，Sagdeev 势方法是等离子体中非线性波研究的重要方法.…”

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Propagating characteristics of nonlinear dust acoustic solitary waves in multicomponent dusty plasma

Lin¹,

Wang²,

Jiang³

2023

Acta Phys. Sin.

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Nowadays, the dusty plasma has become an interesting new branch of the plasma physics. As we all know, the dusty plasmas play a significant role in the space, astrophysical and laboratory environments plasma. But in these days, the studying of the nonlinear waves in dusty plasma have been attracted researchers’ attention to explain many basic phenomena in the plasma physics. The nonlinear waves play an important role in the study of dusty plasmas environments, such as the aster-oid zones, the earth’s mesosphere, the planetary rings etc. In this paper, the propagating characteristics of nonlinear dust acoustic solitary waves in a multicomponent dusty plasma which composed of positively charged dust particles, streaming protons and electrons, Kappa distributed electrons and ions have been studied in detail. The Sagdeev potential method has been employed to research the large amplitude dust acoustic waves. It has an evidence for the existence of compressive and rarefractive solitary waves. With the help of the Sagdeev potential method, the Sagdeev potential function and the bifurcation analysis of phase-portrait have been obtained. Firstly, the Sagdeev potential function have been obtained by the Sagdeev potential method. Then, the variations of phase diagram with different parameters in a two-dimensional autonomous system in the multicomponent dusty plasma system have been investigated. It is found that the system has the linear wave solutions, nonlinear wave solutions and solitary wave solutions at the same time. Meanwhile, the existence of different wave behaviors is closely related to various system factors. Moreover, it is found that only the rarefractive solitary waves exist in the multicomponent dusty plasma system by using the numerical simulation technique. Finally, the important influence of system parameter on the phase diagram, the Sagdeev potential function and the propagating characteristics of nonlinear dust acoustic solitary waves has been discussed clearly. The results have showed that the different system parameters such as Mach number <em>M</em>, the masses, the temperatures, the number densities, the charge numbers of multiple particles and the Kappa distribution parameters for ions and electrons have important effects on the amplitude, the width and the waveform of nonlinear dust acoustic solitary waves.

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