Damping and absorption of high-frequency waves in dusty plasmas

Angelis, U. de; Forlani, A.; Bingham, R.; Shukla, P. K.; Ponomarev, A. V.; Tsytovich, V. N.

doi:10.1063/1.870826

Cited by 25 publications

(6 citation statements)

References 12 publications

(3 reference statements)

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“…There are evidence of many research works done on nonlinear low frequency wave phenomena including solitary wave structures, shocks, double layers, etc. in multicomponent dusty plasmas [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Wave breaking amplitudes of Langmuir modes in electron-positron-ion-dusty plasmas

Maity

Karmakar

2023

Phys. Scr.

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In contrast to the conventional studies on low frequency dust acousticor dust ion acoustic waves, the investigation is donehere on the wave characteristics of high frequency Langmuirmodes in electron-positron-ion-dusty plasmas. In the wave analysis, theelectrons, positrons, and ions are considered to follow relativistic dynamics. Whereasnegative or positive polarity massive dust grains form a fixed charge neutralizing background.Within the Sagdeev pseudopotential approach, the wavebreaking amplitudes of such high frequency oscillations are derived. The wavebreaking amplitudes are shown to depend on various system parameterslike equilibrium ion-to-electron density ratio, relativistic Lorentz factorassociated with the phase velocity of oscillations, etc. It has beendemonstrated that, even though the dust grains do not participate in the wavedynamics, the nature of their charge polarity and the values of equilibrium dust density have profound effects on the wave breaking amplitudes. We expect that the results of our investigation in suchdusty plasma medium may have some relevance in the space plasma research.

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Section: Introductionmentioning

confidence: 99%

Wave breaking amplitudes of Langmuir modes in electron-positron-ion-dusty plasmas

Maity

Karmakar

2023

Phys. Scr.

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“…Most of the earlier investigations on dusty plasma were confined around the dust charging model development [10][11][12] and the effects of dust charged grains on high frequency collective plasma properties [16][17][18] under isolated approximation of dust grains. Subsequently, the study of the dynamics of the dust charged grains within collective approximation picked up momentum [2,19,20].…”

Section: Introductionmentioning

confidence: 99%

Electrostatic sheath at the boundary of a collisional dusty plasma

2000

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Considering the Boltzmann response of the ions and electrons in plasma dynamics and inertial dynamics of the dust charged grains in a highly collisional dusty plasma, the nature of the electrostatic potential near a boundary is investigated. Based on the fluid approximation, the formation as well as the characteristic behaviours of the sheath is studied. It is expected that the presence of dust charged grains will lead to a very different behaviour of the sheath as compared to that of electron-ion plasma. Moreover, the collisions of the dust charged grains with the neutrals are expected to exhibit novel features.

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“…But the stress was always on the search for soliton formation that is a stable con¢guration in a plasma. On the other hand, experimentalists have seen that instability is a very natural behaviour in plasmas [5]. This is actually manifested in the dif¢culty of plasma con-¢nement [6], and the inability to make controlled fusion [7].…”

Section: Introductionmentioning

confidence: 99%

On The Properties of a Chaotic Attractor Observed in an Inhomogenous Magnetised Plasma

2001

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The equations governing the non-linear dynamics of low frequency, long wave-length electromagnetic ¢elds in a non-uniform magnetised plasma are discussed. This pair of non-linear partial differential equations turns out to be non-integrable. A Galerkin basis type expansion is then used to deduce six coupled non-linear ordinary differential equations. These equations are then analysed from the viewpoint of stability and chaos. The system is treated numerically using the techniques of Power spectrum. Lyapunov exponent and phase space analysis. The various regions of the attractor are quanti¢ed using the concept of local divergence rate and the corresponding time averages. The predictability property of the various sections is also analysed by studying the probability density functions of such time averages. Furthermore, the phase spatial variation of the predictability is studied using the Poincare¨section for different sections of incoming and outgoing orbits separately. The local divergence rate of these different sections are also computed to detail the behaviour of the attractor.The chaotic scenario of the attractor is controlled using (a) adaptive control method (b) application of a short pulse (c) application of a nonlinear pulse on the

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Damping and absorption of high-frequency waves in dusty plasmas

Cited by 25 publications

References 12 publications

Wave breaking amplitudes of Langmuir modes in electron-positron-ion-dusty plasmas

Wave breaking amplitudes of Langmuir modes in electron-positron-ion-dusty plasmas

Electrostatic sheath at the boundary of a collisional dusty plasma

On The Properties of a Chaotic Attractor Observed in an Inhomogenous Magnetised Plasma

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