Interaction of two-dimensional plasma crystals with upstream charged particles

Du, C.-R.; Nosenko, V.; Zhdanov, S. K.; Thomas, Hubertus M.; Morfill, G. E.

doi:10.1209/0295-5075/99/55001

Cited by 25 publications

(57 citation statements)

References 33 publications

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“…It is about 25 times weaker compared to the vertical zcomponent, in good agreement with that measured in Ref. [8]. Following Refs.…”

Section: Coupled Pairs As Quasi-particlessupporting

confidence: 91%

“…[8]. Their impact on the dynamics of the crystal layer and some aspects of particle coupling were studied.…”

Section: Direct Observation Of the Interlayer Particle Collisionsmentioning

confidence: 99%

“…[8], a few upstream particles were wandering quasi-freely on top of the lattice layer along the channels made by the rows of ordered intralayer particles. From time to time, encountering a lattice imperfection blocking the channel, they strongly scattered and were forced to change the track direction, then moved again quasi-freely along another newly discovered path, and so on, covering a large area of the crystal.…”

Section: Direct Observation Of the Interlayer Particle Collisionsmentioning

confidence: 99%

“…or even, addressing their position in the flow of ions with respect to a particle layer, "upstream" or "downstream", see, e.g., Ref. [8].) On the other hand, they can be successfully used, as the studies performed recently have shown, as an active agent in the plasma crystal heating experiments [9,10], as a convenient practical diagnostic tool allowing to test in the simplest way the complex plasma elasticity modules [11][12][13], or as a probe of the plasma electric field distribution [14].…”

Section: Introductionmentioning

confidence: 99%

“…In plasma crystal studies, the particles moving in a plane above a single-layer plasma crystal (they were termed upstream particles in Ref. [8]) reveal elements of "strange kinetics" [18] such as channeling and leapfrog motion [8]. Plastic microspheres are confined in a stable single layer above the lower rf electrode in a capacitively coupled rf discharge in argon (the top ring-shaped grounded electrode is not shown here).…”

Section: Introductionmentioning

confidence: 99%

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Observation of particle pairing in a two-dimensional plasma crystal

et al. 2014

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The observation is presented of naturally occurring pairing of particles and their cooperative drift in a two-dimensional plasma crystal. A single layer of plastic microspheres was suspended in the plasma sheath of a capacitively coupled rf discharge in argon at a low pressure of 1 Pa. The particle dynamics were studied by combining the top-view and side-view imaging of the suspension. Cross analysis of the particle trajectories allowed us to identify naturally occurring metastable pairs of particles. The lifetime of pairs was long enough for their reliable identification.

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“…It is about 25 times weaker compared to the vertical zcomponent, in good agreement with that measured in Ref. [8]. Following Refs.…”

Section: Coupled Pairs As Quasi-particlessupporting

confidence: 91%

“…[8]. Their impact on the dynamics of the crystal layer and some aspects of particle coupling were studied.…”

Section: Direct Observation Of the Interlayer Particle Collisionsmentioning

confidence: 99%

Section: Direct Observation Of the Interlayer Particle Collisionsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Observation of particle pairing in a two-dimensional plasma crystal

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Latest Results on Complex Plasmas with the PK-3 Plus Laboratory on Board the International Space Station

Schwabe

Huber

et al. 2018

Microgravity Sci. Technol.

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Complex plasmas are low temperature plasmas 1 that contain microparticles in addition to ions, electrons, and 2 neutral particles. The microparticles acquire high charges, 3 interact with each other and can be considered as model par-4 ticles for effects in classical condensed matter systems, such 5 as crystallization and fluid dynamics. In contrast to atoms in 6 ordinary systems, their movement can be traced on the most 7 basic level, that of individual particles. In order to avoid dis-8 turbances caused by gravity, experiments on complex plas-9 mas are often performed under microgravity conditions. The 10 PK-3 Plus Laboratory was operated on board the Interna-11 tional Space Station from 2006 -2013. Its heart consisted of 12 a capacitively coupled radio-frequency plasma chamber. Mi-13 croparticles were inserted into the low-temperature plasma, 14 forming large, homogeneous complex plasma clouds. Here, 15 we review the results obtained with recent analyses of PK-3 16 Plus data: We study the formation of crystallization fronts, 17 as well as the microparticle motion in, and structure of crys-18 talline complex plasmas. We investigate fluid effects such as 19 wave transmission across an interface, and the development 20 of the energy spectra during the onset of turbulent micropar-ticle movement. We explore how abnormal particles move 22 through, and how macroscopic spheres interact with the mi-23 croparticle cloud. These examples demonstrate the versatil-24 ity of the PK-3 Plus Laboratory. 25 28 53 Weightless complex plasmas show a wealth of interest-1 ing phenomena such as relatively stress-free crystallization 2 [9,14], waves [15, 16], lane formation [17, 18], electrorhe-3 ology and string formation [19-22], cavitation and Mach 4 cones [23-25], etc. Laboratories to study complex plasmas 5 were already used on board the Mir space station [26], and 6 were among the first scientific experiments on board the In-7 ternational Space Station (ISS) [9]. The Russian-German 8 PK-3 Plus Laboratory was operated on the ISS from 2006 9 -2013 [27-29], and the state-of-the-art Russian-European 10 PK-4 Laboratory is currently on board [30, 31]. Data analy-11 sis from PK-3 Plus is still on-going, and here we will review 12 some of the latest results. 13 Fig. 1 shows a sketch of the heart of the PK-3 Plus Lab-14 oratory, the plasma chamber. A plasma was produced in a 15 vacuum chamber filled with argon or neon gas at pressures 16 between 5 and 255 Pa by applying a radio-frequency elec-17 tric field to two parallel electrodes with a distance of 3 cm 18 and a radius of 6 cm. The electrodes were surrounded by 19 1.5 cm wide grounded guard rings in which particle dis-20 pensers were embedded. The dispensers were shaken elec-21 tromagnetically in order to inject monodisperse silica and 22 78

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Dynamics in binary complex (dusty) plasmas

Jiang

2022

Rev. Mod. Plasma Phys.

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Interaction of two-dimensional plasma crystals with upstream charged particles

Cited by 25 publications

References 33 publications

Observation of particle pairing in a two-dimensional plasma crystal

Observation of particle pairing in a two-dimensional plasma crystal

Latest Results on Complex Plasmas with the PK-3 Plus Laboratory on Board the International Space Station

Dynamics in binary complex (dusty) plasmas

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