Transverse ionization instability of the elongated dust cloud in the gas discharge uniform positive column under microgravity conditions

Zobnin, A. V.; Usachev, A. D.; Lipaev, A. M.; Petrov, Fedor; Фортов, В. Е.; Pustylnik, Mikhail; Thomas, Hubertus M.; Fink, M.; Thoma, Markus H.; Padalka, Gennady

doi:10.1088/1742-6596/774/1/012174

Cited by 13 publications

(14 citation statements)

References 10 publications

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“…However, it was demonstrated long ago [ 221 ] that dust immersed in a gas discharge plasma does not necessarily remain in the thermal equilibrium with neutral gas. Moreover, in dusty plasma, there exist several instabilities that induce different types of regular dust motion, [ 17,18,120,147,222–235 ] some of which will be considered in this review.…”

Section: Basic Phenomenamentioning

confidence: 99%

“…With increase of the amount of microparticles injected into the dc discharge, another phenomenon, which was termed “transverse instability,” sets in. [ 18 ] It appears as synchronous oscillations of microparticles in the direction orthogonal to the discharge axis. During this instability, the radial profile of the plasma emission looses its symmetry and also starts to oscillate.…”

Section: Specific Phenomenamentioning

confidence: 99%

“…In spite of the great scientific success of the complex plasma laboratories on the International Space Station (ISS)-PKE-Nefedov, [13] PK-3 Plus [14] and PK-4 [15] -the microparticle suspensions observed in these experiments are in a certain parameter range very far from the desired condition of calmness and uniformity. [16][17][18] Understanding of the fundamentals of dust-plasma interactions is the key to the progress in the quality of the microgravity complex plasma experiments as well as to the correct interpretation of their results.…”

Section: Introductionmentioning

confidence: 99%

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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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Section: Basic Phenomenamentioning

confidence: 99%

Section: Specific Phenomenamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Physical aspects of dust–plasma interactions

Pustylnik

Pikalev

Zobnin

et al. 2021

Contributions to Plasma Physics

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“…Due to its small charge-to-mass ratio and its mesoscopic nature, the dust component introduces a variety of instabilities including dust density waves [5], transverse instability [6], filamentary mode and the void rotation [7][8][9], plasmoids and carousel instability [10,11]. Because of their multi-time-scale character, the instabilities in complex plasma pose a hard problem for numerical studies.…”

Section: Introductionmentioning

confidence: 99%

Heartbeat instability as auto-oscillation between dim and bright void regimes

et al. 2021

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We investigated the self-excited as well as optogalvanically stimulated heartbeat instability in RF discharge complex plasma. Three video cameras measured the motion of the microparticles, the plasma emission, and the laser-induced fluorescence simultaneously. Comprehensive studies of the optogalvanic control of the heartbeat instability revealed that the microparticle suspension can be stabilized by a continuous laser, whereas a modulated laser beam induces the void contraction either transiently or resonantly. The resonance occurred when the laser modulation frequency coincided with the frequency of small breathing oscillations of the microparticle suspension, which are known to be a prerequisite to the heartbeat instability. Based on the experimental results we suggest that the void contraction during the instability is caused by an abrupt void transition from the dim to the bright regime [Pikalev et al., Plasma Sources Sci. Technol. 30, 035014 (2021)]. In the bright regime, a time-averaged electric field at the void boundary heats the electrons causing bright plasma emission inside the void. The dim void has much lower electric field at the boundary and exhibits therefore no emission feature associated with it.

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“…2016, 2018), transverse ionization instability (Zobnin et al. 2016), transformations of dust structures (Polyakov, Shumova & Vasilyak 2017), electrorheological and demixing phenomena (Dietz et al. 2017), particle kinetics (Liu et al.…”

Section: Introductionmentioning

confidence: 99%

Effect of ionization waves on dust chain formation in a DC discharge

et al. 2021

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An interesting aspect of complex plasma is its ability to self-organize into a variety of structural configurations and undergo transitions between these states. A striking phenomenon is the isotropic-to-string transition observed in electrorheological complex plasma under the influence of a symmetric ion wake field. Such transitions have been investigated using the Plasma Kristall-4 (PK-4) microgravity laboratory on the International Space Station. Recent experiments and numerical simulations have shown that, under PK-4-relevant discharge conditions, the seemingly homogeneous direct current discharge column is highly inhomogeneous, with large axial electric field oscillations associated with ionization waves occurring on microsecond time scales. A multi-scale numerical model of the dust–plasma interactions is employed to investigate the role of the electric field in the charge of individual dust grains, the ion wake field and the order of string-like structures. Results are compared with those for dust strings formed in similar conditions in the PK-4 experiment.

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Transverse ionization instability of the elongated dust cloud in the gas discharge uniform positive column under microgravity conditions

Cited by 13 publications

References 10 publications

Physical aspects of dust–plasma interactions

Physical aspects of dust–plasma interactions

Heartbeat instability as auto-oscillation between dim and bright void regimes

Effect of ionization waves on dust chain formation in a DC discharge

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