Large-amplitude dust waves excited by the gas-dynamic impact in a dc glow discharge plasma

Фортов, В. Е.; Петров, О. Ф.; Molotkov, V. I.; Poustylnik, M. Y.; Torchinsky, V. M.; Khrapak, Aleksei G.; Chernyshev, A. V.

doi:10.1103/physreve.69.016402

Cited by 50 publications

(26 citation statements)

References 16 publications

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“…An intriguing aspect of DAWs is the fact that the propagating dust density waves can be seen and analyzed by laser light scattering from the dust particles, and the dynamics of individual particles within the wave can be recorded in space and time. 2,3 The considerable ongoing experimental [3][4][5][6][7][8][9][10][11][12][13] and theoretical [14][15][16][17][18] work on DAWs indicates that this remains a vibrant area of investigation. Recently, for example, Fortov, et al 8 studied DAWs that appear spontaneously in an rf inductive discharge plasma.…”

Section: Introductionmentioning

confidence: 99%

Observations of dust acoustic waves driven at high frequencies: Finite dust temperature effects and wave interference

2007

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An experiment has been performed to study the behavior of dust acoustic waves driven at high frequencies (f>100Hz), extending the range of previous work. In this study, two previously unreported phenomena are observed—interference effects between naturally excited dust acoustic waves and driven dust acoustic waves, and the observation of finite dust temperature effects on the dispersion relation.

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Section: Introductionmentioning

confidence: 99%

Observations of dust acoustic waves driven at high frequencies: Finite dust temperature effects and wave interference

2007

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“…The observations of DAWs and measurements of dust-acoustic (sound) velocities have been used to obtain useful information about dusty plasmas systems under various conditions [4][5][6][7][8][9][10][11][12][13][14][15] (we mainly concentrate on three-dimensional particle clouds here, which is also reflected in the reference list). In particular, experimentally measured DAW dispersion relations and sound velocities have been repeatedly used to estimate the electrical charge of particles in dusty plasmas under laboratory and microgravity conditions [16][17][18][19][20], employing various experimental techniques.…”

Section: Introductionmentioning

confidence: 99%

Fluid approach to evaluate sound velocity in Yukawa systems and complex plasmas

Khrapak¹,

Thomas²

2015

Phys. Rev. E

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The conventional fluid description of multi-component plasma, supplemented by an appropriate equation of state for the macroparticle component, is used to evaluate the longitudinal sound velocity of Yukawa fluids. The obtained results are in very good agreement with those obtained earlier employing the quasi-localized charge approximation and molecular dynamics simulations in a rather broad parameter regime. Thus, a simple yet accurate tool to estimate the sound velocity across coupling regimes is proposed, which can be particularly helpful in estimating the dust-acoustic velocity in strongly coupled dusty (complex) plasmas. It is shown that, within the present approach, the sound velocity is completely determined by particle-particle correlations and the neutralizing medium (plasma), apart from providing screening of the Coulomb interaction, has no other effect on the sound propagation. The ratio of the actual sound velocity to its "ideal gas" (weak coupling) scale only weakly depends on the coupling strength in the fluid regime, but exhibits a pronounced decrease with the increase of the screening strength. The limitations of the present approach in applications to real complex plasmas are briefly discussed.

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“…After 5 years, Barkan et al [7] experimentally studied the DAWs and verified the theoretical prediction of Rao et al [6]. The DAWs which are now found to be very common in both space and laboratory devices [6][7][8][9][10], in which the inertia is provided by the dust particle mass and the restoring force, are provided by the pressures of the inertialess electrons and ions. A number of authors have studied nonlinear DAWs both theoretically [11][12][13][14] and experimentally [15][16][17] during the last few years.…”

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confidence: 82%

Electrostatic Shock Structures in Nonextensive Plasma with Two Distinct Temperature Electrons

Ferdousi

Mamun

2014

Braz J Phys

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The nonlinear dynamics of the dust-acoustic shock waves in a dusty plasma containing negatively charged mobile dust, nonextensive electrons with two distinct temperatures, and Maxwellian ions have been investigated by deriving the Burgers equation. The normal mode analysis is used to examine the linear properties of dustacoustic (DA) waves. It has been observed that the properties of the DA shock waves (SHWs) are significantly modified by nonextensivity of the electrons, electron temperature ratios, and the respective number densities of two species of electrons. A critical value of nonextensivity is found for which shock structures transit from positive to negative potential. The shock waves with positive and negative potential are obtained depending on the plasma parameters. The entailments of our results may be useful to understand the structures and the characteristics of DASHWs both in laboratory and astrophysical plasma systems.

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Large-amplitude dust waves excited by the gas-dynamic impact in a dc glow discharge plasma

Cited by 50 publications

References 16 publications

Observations of dust acoustic waves driven at high frequencies: Finite dust temperature effects and wave interference

Observations of dust acoustic waves driven at high frequencies: Finite dust temperature effects and wave interference

Fluid approach to evaluate sound velocity in Yukawa systems and complex plasmas

Electrostatic Shock Structures in Nonextensive Plasma with Two Distinct Temperature Electrons

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