Nonlinear Ion-Acoustic Waves in Gravitating Dusty Plasma with Non-Isothermal Electrons and Fluctuating Dust Charges

Paul, S. N.; Pakira, G.; Paul, Barnali; Ghosh, Basudev

doi:10.12693/aphyspola.122.116

Cited by 7 publications

(3 citation statements)

References 42 publications

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“…In fact, a number of authors have considered non-linear wave propagation in self-gravitating dusty plasma where there is a competition between gravitational attraction and electrostatic repulsion between the charged grains, apart from other electromagnetic effects. It has been found that the gravitational effect can also significantly influence the non-linear wave propagation through dusty plasma [23].…”

Section: Introductionmentioning

confidence: 99%

Single Mode Periodic Wave Trains in Self-Gravitating Dusty Plasma

Ngwabe,

Kakmeni

2023

JAMP

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In this paper, we consider the dynamics of modulated waves in an unmagnetized, non-isothermal self-gravitating dusty plasma model. The varying charge on the moving dust, as it moves in and out of regions of differing electron and ion densities (due to changes in the electrostatic potential), will be out of phase with the equilibrium charge. The effect of the dust is to increase the phase velocity of the ion-acoustic (IA) waves i.e. decrease the Landau damping. In the low-amplitude limit and weak damping, we apply the reductive perturbation method on the model that resulted to the complex cubic Ginzburg-Landau (CCGL) equation. From these results, it is observed that, the plasma parameters strongly influence the properties of the solitary wave solution namely, the amplitude and the width. The effects of non-isothermal electrons, gravity, dust charge fluctuations and drifting motion on the ion-acoustic solitary waves are discussed with application in astrophysical contexts. It is also observed that the number of charges residing on the dust grains increases the modulational stability of the plane waves in the plasma, thus, enhancing the generation of modulated waves.

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Section: Introductionmentioning

confidence: 99%

Single Mode Periodic Wave Trains in Self-Gravitating Dusty Plasma

Ngwabe,

Kakmeni

2023

JAMP

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“…In order to include the function of fluctuating dust charge on DA solitons, several research efforts have been carried out [38][39][40][41]. Paul et al [42] had considered dusty plasma consisting of nonthermal ions, Boltzmann distributed electrons, and mobile charge fluctuating negative dust. By using the method of reductive perturbation, the propagation of dust acoustic (DA) waves was studied.…”

Section: Introductionmentioning

confidence: 99%

Collisionless damping of nonplanar dust acoustic waves due to dust charge fluctuation in nonextensive polarized plasma

Gill¹,

Bansal²

2021

Phys. Scr.

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A rigorous theoretical investigation has been made of the cylindrical/spherical dust acoustic waves in collisionless dusty plasma with variable charges under the influence of polarization force by reductive perturbation method. It is shown that the collisionless damping due to dust charge fluctuation causes the dust acoustic wave propagation to be described by the nonplanar damped Korteweg–de Vries equation. By use of weighted residual method, a progressive wave solution to nonplanar damped KdV equation is presented for the first time. It is shown that dust charge fluctuation produce damping which is responsible for wave attenuation. The solution shows that as one goes towards the axis of the cylinder or centre of the sphere, the wave attenuates faster and the effects are shown in some 2D figures. Within a small amplitude limit, the influence of dust charge fluctuation, polarisation power, nonextensivity and ion temperature on the time evolution of dust acoustic solitons is also demonstrated. In laboratory experiments and space regions, findings obtained here may shed light on the salient characteristics of DA waves.

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“…It has been reported veritably that the presence of non-isothermal electrons in plasma gives rise to many interesting characteristics in the nonlinear propagations of waves, including the excitations of ions-acoustic solitary waves. [23][24][25] Thus the exploration of nonlinear behavior of non-isothermal plasmas having unmagnetized as well as magnetized background [26][27][28][29] has received considerable attention and has been studied by a number of authors in the last few years.…”

Section: Introductionmentioning

confidence: 99%

Lower order three-dimensional Burgers equation having non-Maxwellian ions in dusty plasmas

Dev¹

2017

Chinese Phys. B

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The dust acoustic (DA) shock wave with dust charge fluctuations, non-Maxwellian ions, and non-isothermal electrons is studied theoretically. The perturbation technique is employed to derive the lower order three-dimensional (3D) Burgers equation, and shock wave solution is explored by the tan-hyperbolic method. The effects of flat trapped and trapped electron distributions in the presence of Maxwellian and non-Maxwellian ions on characteristics shock waves are observed. The temperature ratio of non-Maxwellian ion temperature and non-isothermal electron temperature is found to play an important role in forming the shock-like structure.

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Nonlinear Ion-Acoustic Waves in Gravitating Dusty Plasma with Non-Isothermal Electrons and Fluctuating Dust Charges

Cited by 7 publications

References 42 publications

Single Mode Periodic Wave Trains in Self-Gravitating Dusty Plasma

Single Mode Periodic Wave Trains in Self-Gravitating Dusty Plasma

Collisionless damping of nonplanar dust acoustic waves due to dust charge fluctuation in nonextensive polarized plasma

Lower order three-dimensional Burgers equation having non-Maxwellian ions in dusty plasmas

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