Dust acoustic soliton and double layers with streaming dust and superthermal particles

Shan, S. Ali; Ahmad, Masood

doi:10.1007/s10509-013-1433-2

Cited by 10 publications

(11 citation statements)

References 68 publications

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“…This has a straightforward effect on the nonlinear properties of the plasma environment, and the subsequent ion-acoustic wave (IAW) characteristics. Several contributions have pointed out the importance of the balance between nonlinearity and dispersion in the formation of IAWs in ENPs [13][14][15]. Especially, their modulational instability (MI) has been addressed by a few authors, with interest in the way some plasma parameters, such as the electron-to-negative ion temperature ratio and the negative ion concentration ratio, may affect the formation of modulated IAWs [16,17,[18][19][20].…”

Section: H H (mentioning

confidence: 99%

Modulational instability of coupled waves in electronegative plasmas

Tabi

Panguetna²,

Motsumi

et al. 2020

Phys. Scr.

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The dynamics of coupled ion-acoustic waves is investigated in an electronegative plasma made of Boltzmann negative ions, cold mobile positive ions and Boltzmann electrons. Using the reductive perturbation method, it is shown that the system can fully be described by a set of two coupled nonlinear Schrödinger equations. The parametric analysis of modulational instability reveals the existence of regions of instability that are sensitive to changes in plasma parameters such as the negative ion concentration ratio and the electron-to-negative ion temperature ratio. The analytical results are confronted to numerical simulations, where we examine the long-time dynamics of modulated waves in the electronegative plasma. One obtains the generation of nonlinear modulated waves that are sensitive to the negative-ion concentration ratio. Exact solutions for individual modes are discussed and one finally derives the coupled solution. The response of the latter to the plasma parameter variations is also addressed.

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Section: H H (mentioning

confidence: 99%

Modulational instability of coupled waves in electronegative plasmas

Tabi

Panguetna²,

Motsumi

et al. 2020

Phys. Scr.

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“…. In getting equation (16), the values of the first-order perturbation quantities that have been used are as:…”

Section: Nonlinear Analysismentioning

confidence: 99%

“…Saini et al [14] and Boubakour et al [15] studied arbitraryamplitude IAWs in the presence of non-Maxwellian electrons and obtained their existence domain with their characteristics. Shan and Mushtaq [16] have investigated the dust acoustic solitons and double layers in a plasma system containing dynamic and streaming dust, superthermal electrons and ions. In their research work, it has been concluded that the streaming dust plays a destructive role for the formation of some of the solitons and works as a source, for the emergence of new solitons (or a new solitons existence region).…”

Section: Introductionmentioning

confidence: 99%

Kadomtsev–Petviashvili solitons in a warm electronegative plasma withq-nonextensive electrons

2014

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The Kadomtsev-Petviashvili (KP) equation for electrostatic ion acoustic solitons in a warm electronegative plasma with q-nonextensive electrons is derived. It is pointed out with the help of some suitable parameters that the phase speed of two acoustic modes and two-dimensional KP solitons are significantly modified by variation of quantities such as q (nonextensive parameter), α (the ratio of the mass of negative to positive ion), μ (the electron to positive ion number density ratio) and θ i (the ratio of positive ion to electron temperature).

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“…Many theoretical investigations have been devoted to the low frequency linear and nonlinear electrostatic waves in dusty plasma consisting of electrons, ions and negatively charged dust which include dust acoustic wave (DAW) (Rao et al 1990;Shan and Mushtaq 2013), dust ion acoustic wave (Shan and Mushtaq 2012;Shan and Saleem 2014) and dust drift wave (Shukla et al 1991).…”

Section: Introductionmentioning

confidence: 99%

Solitons and double layers in opposite polarity dusty plasma having superthermal electrons and trapped ions

Shan

Saleem

2023

Preprint

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Nonlinear dust acoustic solitons and double layers (DLs) are investigated in a four component dusty plasma consisting of superthermal electrons, superthermal trapped ions, positive and negative dust grains. The reductive perturbation method is employed to derive Schamel Korteweg de Vries (S-KdV) equation and modified Schamel Korteweg de Vries (mSKdV) equation. It is found that the nonlinear structures only with negative potential (rarefactive) can be formed in a two-dust (both positive and negative) plasma in the presence of superthermal trapped ions. In the earlier investigations, it was reported that both rarefactive (dip) and compressive (hump) nonlinear structures are possible in the plasma having both positive and negative dust species in the absence of trapped ions. Here, it is pointed out that the ions trapping does not allow the formation of compressive nonlinear structures. The results can be used to understand the dynamics of small amplitude solitary waves and double layers in dusty plasmas of cometary tails, planetary magnetospheres and interstellar clouds. PACS numbers: 52.27.Cm, 52.30.Ex, 52.35.Sb

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Dust acoustic soliton and double layers with streaming dust and superthermal particles

Cited by 10 publications

References 68 publications

Modulational instability of coupled waves in electronegative plasmas

Modulational instability of coupled waves in electronegative plasmas

Kadomtsev–Petviashvili solitons in a warm electronegative plasma withq-nonextensive electrons

Solitons and double layers in opposite polarity dusty plasma having superthermal electrons and trapped ions

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