Capacitively coupled rf discharge with a large amount of microparticles: Spatiotemporal emission pattern and microparticle arrangement

Pustylnik, Mikhail; Semenov, Igor; Zähringer, Erich; Thomas, Hubertus M.

doi:10.1103/physreve.96.033203

Cited by 16 publications

(65 citation statements)

References 57 publications

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“…Experimental data of the electrostatic potential or densities of electron and ions in fine particle plasma, especially in fine particle clouds, are not easy to access directly and are usually obtained by combinations of some experimental observations and simulations. The tendency of enhanced charge neutrality has been shown in [14][15][16][17] and the parallel behavior of the ion charge density and particle charge density shown in [10] is observable in figure 4 in [18].…”

Section: Introductionmentioning

confidence: 75%

“…We have shown that the model works as an approximation by comparing its prediction with numerically obtained results. Though there seem to be no experimental data of electron, ion and particle densities or the potential under gravity for more or less direct comparison, we expect they may become available, for example, similarly to those in [18]. where variables without arguments denote those at y.…”

Section: Resultsmentioning

confidence: 99%

“…From the neutral gas density n n and the ion-neutral collision cross section σ in (for example, σ in ∼10 −14 cm 2 for Ar), we evaluate ℓ i by ℓ i =1/n n σ in . The balance (18) gives the value of the electric field at y=0, E y (0), in the form = -…”

Section: Boundary Conditions and Numerical Proceduresmentioning

confidence: 99%

“…In this article, we numerically analyze the drift-diffusion equations under gravity and clarify the behavior of fine particle clouds, confirming the prediction on the behavior of fine particle cloud under gravity and the applicability of our simple model. Set of parameters we consider is a typical one in experiments [6,7,[14][15][16][17][18]: the partially ionized plasma of inert gases such as Ar and Ne at 10-10 2 Pa with the plasma (electron and ion) and fine particle densities around 10 8 -10 9 cm −3 and 10 4 -10 5 cm −3 , respectively, and the electron temperature of a few eV. A preliminary result in limited cases has been reported in [19].…”

Section: Introductionmentioning

confidence: 99%

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Static behavior of fine particle clouds in fine particle (dusty) plasmas under gravity

Totsuji

2018

J. Phys. Commun.

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Static behavior of fine particle cloud in fine particle (dusty) plasmas under gravity is analyzed numerically on the basis of the drift-diffusion equations. The system is assumed to have onedimensional structure and the effect of the ion drag force is taken into account. The results confirm the analytically obtained prediction that we have an enhanced charge neutrality in fine particle clouds under gravity as well as under microgravity. They are also compared with a simple model based on the enhanced charge neutrality in clouds to show its applicability.

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Section: Introductionmentioning

confidence: 75%

Section: Resultsmentioning

confidence: 99%

Section: Boundary Conditions and Numerical Proceduresmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Static behavior of fine particle clouds in fine particle (dusty) plasmas under gravity

Totsuji

2018

J. Phys. Commun.

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“…The results of calculation based on formulas (15), (18)- (20) for the discharge in argon are shown in Figs. 2-4.…”

Section: Ionization Equation Of State For the Dust Cloudmentioning

confidence: 99%

Ionization equation of state for the dusty plasma including the effect of ion–atom collisions

Zhukhovitskii

2019

Physics of Plasmas

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The ionization equation of state (IEOS) for a cloud of the dust particles in the low-pressure gas discharge under microgravity conditions is proposed. IEOS relates pairs of the parameters specific for the charged components of dusty plasma. It is based on the modified collision enhance collection model adapted for the Wigner-Seitz cell model of the dust cloud. This model takes into account the effect of ion-atom collisions on the ion current to the dust particles and assumes that the screening length for the ion-particle interaction is of the same order of magnitude as the radius of the Wigner-Seitz cell. Included effect leads to a noticeable decrease of the particle charge as compared to the previously developed IEOS based on the orbital motion limited model. Assuming that the Havnes parameter of the dusty plasma is moderate one can reproduce the dust particle number density measured in experiments and, in particular, its dependence on the gas pressure. Although IEOS includes no fitting parameters, it can ensure a satisfactory precision in a wide range of dusty plasma parameters. Based on the developed IEOS, the threshold relation between the dusty plasma parameters for onset of the lane formation in binary dusty plasmas is deduced.

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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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Capacitively coupled rf discharge with a large amount of microparticles: Spatiotemporal emission pattern and microparticle arrangement

Cited by 16 publications

References 57 publications

Static behavior of fine particle clouds in fine particle (dusty) plasmas under gravity

Static behavior of fine particle clouds in fine particle (dusty) plasmas under gravity

Ionization equation of state for the dusty plasma including the effect of ion–atom collisions

Physical aspects of dust–plasma interactions

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