Positive column of a glow discharge in neon with charged dust grains (a review)

Polyakov, D. N.; Шумова, В. В.; Vasilyak, L. M.

doi:10.1134/s1063780x17030096

Cited by 23 publications

(25 citation statements)

References 54 publications

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“…Earlier we revealed [2,8], that the distances between the dust particles and the shapes of dust structures show the complex dependence on neon temperature, pressure and discharge parameters. In the present study, the distances between the dust particles in dust structures at 295 K were of 140 to 310 µm depending on discharge current, and they varied along the dust structure.…”

Section: Resultsmentioning

confidence: 99%

Formation of the structures from dusty clusters in neon dc discharge under cooling

Polyakov

Шумова

Vasilyak

2016

J. Phys.: Conf. Ser.

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Abstract. The formation of structures consisted of dusty clusters in plasma at the discharge tube cooling to a temperature of liquid nitrogen was discovered. The dependence of the reduced electric field in the positive column of a discharge on gas temperature was experimentally measured. Depending on the pressure of neon were observed the different structural transitions in the regions of growing current-voltage characteristics at low discharge currents ≤ 1 mA. It was found that the regions of existence of structured clusters and the regions of structural transitions were characterized by the higher values of the reduced electric field than the regions of destruction of ordered structures.

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Section: Resultsmentioning

confidence: 99%

Formation of the structures from dusty clusters in neon dc discharge under cooling

Polyakov

Шумова

Vasilyak

2016

J. Phys.: Conf. Ser.

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“…[1][2][3][4][5][6][7][8][9][10][11][12][13] It was understood that electron and ion losses on dust particle surface should be compensated for in ionizing collisions, and an averaged electric field should increase in the region containing dust particles. The influence of dust particles on gas discharge plasma is negligible only for low dust particles concentration and charge.…”

Section: Introductionmentioning

confidence: 99%

“…[6][7][8] For example, dust particle charging is provided by the electron and ion fluxes into the cloud from the surrounding plasma. [9][10][11][12][13][14] The aim of this work is to highlight the non-local influence of a dust cloud on a DC discharge plasma. In particular, the electric field providing the confinement of dust particles is usually taken as a given one.…”

Section: Introductionmentioning

confidence: 99%

“…There are many papers devoted to the influence of dust particles on gas discharge plasma parameters. [1][2][3][4][5][6][7][8][9][10][11][12][13] It was understood that electron and ion losses on dust particle surface should be compensated for in ionizing collisions, and an averaged electric field should increase in the region containing dust particles. With the help of a homogeneous self-consistent kinetic model, it was shown [2,3] that an increase of dust particles density leads to an increase of averaged electric field and ion density, and to a decrease of dust particle charge and electron density in the dust cloud.…”

Section: Introductionmentioning

confidence: 99%

“…The influence of dust particles on radial distributions of the discharge plasma parameters was studied by a non-local kinetic model in Fedoseev et al [4][5][6][7] and with the help of drift-diffusion approximation for electrons and ions in recent papers. [9][10][11][12][13][14] The aim of this work is to highlight the non-local influence of a dust cloud on a DC discharge plasma. The non-local effects will be considered on the example of radial distributions of plasma parameters in non-stratified positive column of a glow discharge with the dust cloud.…”

Section: Introductionmentioning

confidence: 99%

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Non‐local electron kinetics around the cloud of dust particles

Fedoseev

Demin

Salnikov

et al. 2019

Contributions to Plasma Physics

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Mutual influence of dust particles and gas discharge plasma was investigated with the help of self-consistent non-local kinetic model. Calculations were performed for fixed step-like radial distributions of the dust particles density, and for self-consistent distribution calculated by the drift-diffusion equation. The results show, that the production of electrons and ion occurs mainly outside the dust cloud. In the case of self-consistent dust particles density distribution, inside the dust cloud the ionization rate is equal to the rate of electron and ion recombination on the dust particles, the radial components of electron and ion fluxes are almost equal to zero, and the radial electric field is expelled from the dust cloud. Presented results can be important for description of the plasma confinement of the dust particles clouds. KEYWORDS dusty plasma, electron energy distribution function, non-local electron kinetics 1

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Physical aspects of dust–plasma interactions

Pustylnik

Pikalev

Zobnin

et al. 2021

Contributions to Plasma Physics

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Low‐pressure gas discharge plasmas are known to be strongly affected by the presence of small dust particles. This issue plays a role in the investigations of dust particle‐forming plasmas, where the dust‐induced instabilities may affect the properties of synthesized dust particles. Also, gas discharges with large amounts of microparticles are used in microgravity experiments, where strongly coupled subsystems of charged microparticles represent particle‐resolved models of liquids and solids. In this field, deep understanding of dust–plasma interactions is required to construct the discharge configurations which would be able to model the desired generic condensed matter physics as well as, in the interpretation of experiments, to distinguish the plasma phenomena from the generic condensed matter physics phenomena. In this review, we address only physical aspects of dust–plasma interactions, that is, we always imply constant chemical composition of the plasma as well as constant size of the dust particles. We also restrict the review to two discharge types: dc discharge and capacitively coupled rf discharge. We describe the experimental methods used in the investigations of dust–plasma interactions and show the approaches to numerical modelling of the gas discharge plasmas with large amounts of dust. Starting from the basic physical principles governing the dust–plasma interactions, we discuss the state‐of‐the‐art understanding of such complicated, discharge‐type‐specific phenomena as dust‐induced stratification and transverse instability in a dc discharge or void formation and heartbeat instability in an rf discharge.

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Positive column of a glow discharge in neon with charged dust grains (a review)

Cited by 23 publications

References 54 publications

Formation of the structures from dusty clusters in neon dc discharge under cooling

Formation of the structures from dusty clusters in neon dc discharge under cooling

Non‐local electron kinetics around the cloud of dust particles

Physical aspects of dust–plasma interactions

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