Structural properties of dusty plasma in direct current and radio frequency gas discharges

Рамазанов, Т. С.; Dzhumagulova, K. N.; Jumabekov, Askhat N.; Dosbolayev, M. K.

doi:10.1063/1.2918336

Cited by 58 publications

(29 citation statements)

References 26 publications

(17 reference statements)

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“…1 [9]. The core part of the installation is represented by a vacuum-tight glass tube of 0,8 m in length and 0,06 m in diameter with discharge electrodes positioned at the top and bottom of it.…”

Section: Methodsmentioning

confidence: 99%

Ion Heating in Dusty Plasma of Noble Gas Mixtures

Рамазанов

Daniyarov

Maĭorov³

et al. 2011

Contrib. Plasma Phys.

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Ion heating in dusty plasma of noble gas mixtures is studied by the observation of dust particles in stratified glow discharge. The particles and their formations can be used as a "contact-free" probe of the ion flows. It is shown that under condition of experiments transition of dust particles into crystalline state in pure gases occur at much lower pressures in comparison to the case of gas mixtures. This observation is also supported by the evaluation of "effective" kinetic temperature of dust particles as defined from the velocity distribution function at the same set of discharge parameters. Absolute value of temperature of dust component in the mixture of helium and argon indicates important role of argon ionization process.

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Section: Methodsmentioning

confidence: 99%

Ion Heating in Dusty Plasma of Noble Gas Mixtures

Рамазанов

Daniyarov

Maĭorov³

et al. 2011

Contrib. Plasma Phys.

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“…1,2 By these reasons, the dusty plasma properties are actively investigated on the basis of the theoretical and experimental methods. [1][2][3][4][5] In the most cases, the dust particles have charge of the same sign. Hence, the forces affected between them are mostly repulsive.…”

Section: Introductionmentioning

confidence: 99%

Diffusion coefficient of three-dimensional Yukawa liquids

Dzhumagulova¹,

Рамазанов²,

Masheeva³

2013

Physics of Plasmas

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The purpose of this work is an investigation of the diffusion coefficient of the dust component in complex plasma. The computer simulation of the Yukawa liquids was made on the basis of the Langevin equation, which takes into account the influence of buffer plasma on the dust particles dynamics. The Green-Kubo relation was used to calculate the diffusion coefficient. Calculations of the diffusion coefficient for a wide range of the system parameters were performed. Using obtained numerical data, we constructed the interpolation formula for the diffusion coefficient. We also show that the interpolation formula correctly describes experimental data obtained under microgravity conditions. V C 2013 AIP Publishing LLC. [http://dx.

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“…Such wake effects that are due to a "focusing" of the light particles behind the heavy one are well known from classical dusty (complex) plasmas where ion focusing behind a highly charged heavy dust particle is well established experimentally, e.g. [12][13][14]. Recently, it has been shown that the presence of a strong ion drift leads to the excitation of ion instabilities and the destabilization of highly ordered dust grain ensembles such as dust crystals and to their melting [15], and also generalizations to magnetized plasmas have been performed [16].…”

Section: Introductionmentioning

confidence: 99%

Ion potential in warm dense matter: Wake effects due to streaming degenerate electrons

et al. 2015

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The effective dynamically screened potential of a classical ion in a stationary flowing quantum plasma at finite temperature is investigated. This is a key quantity for thermodynamics and transport of dense plasmas in the warm dense matter regime. This potential has been studied before within hydrodynamic approaches or based on the zero temperature Lindhard dielectric function. Here we extend the kinetic analysis by including the effects of finite temperature and of collisions based on the Mermin dielectric function. The resulting ion potential exhibits an oscillatory structure with attractive minima (wakes) and, thus, strongly deviates from the static Yukawa potential of equilibrium plasmas. This potential is analyzed in detail for high-density plasmas with values of the Brueckner parameter in the range 0.1 ≤ rs ≤ 1, for a broad range of plasma temperature and electron streaming velocity. It is shown that wake effects become weaker with increasing temperature of the electrons. Finally, we obtain the minimal electron streaming velocity for which attraction between ions occurs. This velocity turns out to be less than the electron Fermi velocity. Our results allow, for the first time, for reliable predictions of the strength of wake effects in nonequilibrium quantum plasmas with fast streaming electrons showing that these effects are crucial for transport under warm dense matter conditions, in particular for laser-matter interaction, electron-ion temperature equilibration and for stopping power.

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Structural properties of dusty plasma in direct current and radio frequency gas discharges

Cited by 58 publications

References 26 publications

Ion Heating in Dusty Plasma of Noble Gas Mixtures

Ion Heating in Dusty Plasma of Noble Gas Mixtures

Diffusion coefficient of three-dimensional Yukawa liquids

Ion potential in warm dense matter: Wake effects due to streaming degenerate electrons

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