Dust-Acoustic Nonlinear Waves in a Nanoparticle Fraction of Ultracold (2K) Multicomponent Dusty Plasma

The nonlinear dust-acoustic instability in the condensed submicron fraction of dust particles in the low-pressure glow discharge at ultra-low temperatures is experimentally and theoretically investigated. The main discharge parameters are estimated on the basisof the dust-acoustic wave analysis. In particular, the temperature and density of ions, as well as the Debye radius, are determined. It is shown that the ion temperature exceeds the temperature of the neutral gas. The drift characteristics of all plasma fractions are estimated. The reasons for the instability excitation are considered.

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A note on ion–dust streaming instability in a collisional dusty plasma

Journal of Plasma Physics ◽

10.1017/s0022377802001678 ◽

2002 ◽

Vol 67 (4) ◽

pp. 235-242 ◽

Cited By ~ 47

Author(s):

M. ROSENBERG

Keyword(s):

Dusty Plasma ◽

Collision Frequency ◽

Low Frequency ◽

Dusty Plasmas ◽

Dust Acoustic Wave ◽

Ion Drift ◽

Acoustic Instability ◽

Streaming Instability ◽

Dust Acoustic ◽

Thermal Speed

This note investigates an ion-dust streaming instability with frequency ω less than the dust collision frequency νd, in an unmagnetized collisional dusty plasma. Under certain conditions, a resistive instability can be excited by an ion drift on the order of the ion thermal speed, even when the dust acoustic wave is heavily damped. The effect of weak collisions on the usual dust acoustic instability in the regime ω > νd is also considered. Applications to experimental observations of low-frequency fluctuations in laboratory d.c. glow discharge dusty plasmas are discussed.

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25 years of dust acoustic waves

Journal of Plasma Physics ◽

10.1017/s0022377814000312 ◽

2014 ◽

Vol 80 (6) ◽

pp. 773-786 ◽

Cited By ~ 61

Author(s):

Robert L. Merlino

Keyword(s):

Acoustic Wave ◽

Acoustic Waves ◽

High Speed ◽

Large Body ◽

Dusty Plasmas ◽

Dust Particles ◽

Collective Effects ◽

Nonlinear Properties ◽

Dust Acoustic Wave ◽

Dust Acoustic

The dust acoustic wave (DAW) was first discussed by P. K. Shukla in May of 1989 at the First Capri Workshop on Dusty Plasmas. In the past 25 years, the subsequent publication of the linear and nonlinear properties of the DAW (Rao, N. N., Shukla, P. K. and Yu, M. Y. 1990 Planet. Space Sci.38, 543) has generated and sustained a large body of theoretical and experimental research that has clarified the physics of collective effects in dusty plasmas. A unique feature of the DAW is that it can be observed (literally) using laser illumination and high-speed videography, revealing details of wave-particle interactions at an unprecedented single particle level. This paper attempts to review some of the contributions and extensions of dust acoustic wave physics, as well as identify recent findings that illustrate the potential importance of this dust wave in the agglomeration of dust particles.

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Volumetric measurement of the synchronization and desynchronization of the dust acoustic wave with an external modulation

Journal of Plasma Physics ◽

10.1017/s0022377819000655 ◽

2019 ◽

Vol 85 (5) ◽

Author(s):

Jeremiah D. Williams

Keyword(s):

Acoustic Wave ◽

Phase Synchronization ◽

Wave Mode ◽

Gas Pressure ◽

Dust Acoustic Wave ◽

Neutral Gas ◽

External Modulation ◽

Naturally Occurring ◽

Dust Acoustic ◽

Temporal Measurement

A spatio-temporal measurement showing the volumetric nature of the phase synchronization of a naturally occurring dust acoustic wave to an external modulation and the relaxation from the driven wave mode back to the naturally occurring wave mode (phase desynchronization) is presented. It is shown that the phase synchronization and desynchronization occur behind a propagating synchronization/desynchronization front that travels at a slower speed than the phase velocity of the wave and that the speed of this synchronization/desynchronization front decreases with increasing neutral gas pressure. It is also observed that volume of the wave that is synchronous depends on the frequency of the external modulation and the neutral gas pressure.

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Dust particles of finite dimensions in complex plasmas: thermodynamics and dust-acoustic wave dispersion

Journal of Plasma Physics ◽

10.1017/s0022377818000879 ◽

2018 ◽

Vol 84 (4) ◽

Cited By ~ 3

Author(s):

A. E. Davletov ◽

L. T. Yerimbetova ◽

Yu. V. Arkhipov ◽

Ye. S. Mukhametkarimov ◽

A. Kissan ◽

...

Keyword(s):

Acoustic Wave ◽

Finite Size ◽

Wave Dispersion ◽

Dusty Plasmas ◽

Dust Particles ◽

Thermodynamic Quantities ◽

Strongly Coupled ◽

Dust Acoustic Wave ◽

Theoretical Approaches ◽

Dust Acoustic

Grounded on the premise that dust particles are charged hard balls, the analysis in Davletov et al. (Contrib. Plasma Phys., vol. 56, 2016, 308) provides an original pseudopotential model of intergrain interaction in complex (dusty) plasmas. This accurate model is engaged herein to consistently treat the finite-size effects from the process of dust particle charging to determination of the thermodynamic quantities and the dust-acoustic wave dispersion in the strongly coupled regime. The orbital motion limited approximation is adopted to evaluate an electric charge of dust grains immersed in a neutralizing background of the buffer plasma. To account for finite dimensions of dust particles, the radial distribution function is calculated within the reference hypernetted-chain (RHNC) approximation to demonstrate a well-pronounced short-range order formation at rather large values of the coupling parameter and the packing fraction. The evaluated excess pressure of the dust component is compared to the available theoretical approaches and the simulation data and is then used to predict the dust-acoustic wave (DAW) dispersion in the strongly coupled regime under the assumption that the dust particles charge varies in the course of propagation. In contrast to many previous investigations, it is demonstrated for the first time ever that for DAWs the charge variation of dust particles should necessarily be taken into account while evaluating the dust isothermal compressibility.

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