Experiments and Molecular-Dynamics Simulation of Elastic Waves in a Plasma Crystal Radiated from a Small Dipole Source

Piel, A.; Nosenko, V.; Goree, J.

doi:10.1103/physrevlett.89.085004

Cited by 32 publications

(19 citation statements)

References 18 publications

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“…Such strongly coupled dust structures may serve as a unique model system for studying the physical processes in condensed matter, such as phase transitions [65,66], waves and oscillations [67][68][69], Mach cones [70,71], etc. Due to the large mass of the dust particles the characteristic relaxation time for the plasma crystals is usually of the order of seconds, making such structures easy to observe with ordinary video-observation techniques.…”

Section: Simulation and Resultsmentioning

confidence: 99%

Particle in Cell Simulation of Low Temperature Laboratory Plasmas

Matyash

Schneider

Taccogna

et al. 2007

Contrib. Plasma Phys.

107

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Several applications of PIC simulations for understanding basic physics phenomena in low-temperature plasmas are presented: capacitive radiofrequency discharges in Oxygen, dusty plasmas and negative ion sources for heating of fusion plasmas. The analysis of these systems based on their microscopic properties as accessible with PIC gives improved insight into their complex behavior. These studies are results of joint efforts over about one decade

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Section: Simulation and Resultsmentioning

confidence: 99%

Particle in Cell Simulation of Low Temperature Laboratory Plasmas

Matyash

Schneider

Taccogna

et al. 2007

Contrib. Plasma Phys.

107

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“…In the presence of gravity, monodisperse microparticles can form single-layer, or two-dimensional (2D) plasma crystals. They are popular model systems to study various phenomena such as waves [2][3][4][5], phase transitions [6][7][8], and transport phenomena [9][10][11][12][13], in real time and at the level of individual particles. However, care should be taken to clearly separate the generic and plasma-related phenomena which are peculiar to plasma crystals [14].…”

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confidence: 99%

Dynamics of spinning particle pairs in a single-layer complex plasma crystal

et al. 2017

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Spontaneous formation of spinning pairs of particles, or torsions, is studied in a single-layer complex plasma crystal by reducing the discharge power at constant neutral gas pressure. At higher gas pressures, torsions spontaneously form below a certain power threshold. Further reduction of the discharge power leads to the formation of multiple torsions. However, at lower gas pressures the torsion formation is preceded by mode-coupling instability (MCI). The crystal dynamics are studied with the help of the fluctuation spectra of crystal particles' in-plane velocities. Surprisingly, the spectra of the crystal with torsions and MCI are rather similar and contain hot spots at similar locations on the (k,ω) plane, despite very different appearances of the respective particle trajectories. The torsion rotation speed is close (slightly below) to the maximum frequency of the in-plane compressional mode. When multiple torsions form, their rotation speeds are distributed in a narrow range slightly below the maximum frequency.

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“…The dynamic response of two-dimensional dust monolayers to an external stimulus was already studied in detail and comprises wave excitation by periodic laser forces, 1,2 Mach cones excited by fast particles 3 or by moving laser spots, [4][5][6] and pulsed localized excitation of elementary waves. 7 Laser-induced steadystate particle motion was used to study shear flows. [8][9][10] In contrast, the response properties of three-dimensional dust clouds are less well understood.…”

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confidence: 99%