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Agglomeration of microparticles in complex plasmas
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10.1063/1.3495979
/content/aip/journal/pop/17/11/10.1063/1.3495979
http://aip.metastore.ingenta.com/content/aip/journal/pop/17/11/10.1063/1.3495979
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Particle cloud before the dust density waves were triggered (first column) and after the waves were stopped (second column). Shown are the results of the experiments with different particles: the first row represents particles of in diameter, the second row—MF particles of in diameter, the third row—MF particles of in diameter, and the fourth row—PMMA particles of in diameter.

Image of FIG. 2.
FIG. 2.

Single microparticles before the waves were triggered (first column) and examples of aggregates after the waves were stopped (second and third column), all observed with a long-distance microscope. Experiments were performed with different particles, the first row—MF particles of in diameter, the second row—PMMA particles of in diameter, the third row—MPS particles of in diameter, the fourth row—MF particles of in diameter, and the fifth row—silver-coated PS particles of in diameter.

Image of FIG. 3.
FIG. 3.

Trajectories of individual microparticles in the wave. (a) The trajectories are depicted by superimposing five consecutive video frames (color-coded from dark blue to red online). [(b)–(f)] Example of a two-particle scattering collision [magnified rectangular box from (a)], the scattering is shown as a sequence of five consecutive frames. The results are for MF particles of in diameter.

Image of FIG. 4.
FIG. 4.

Comparison of a two-particle scattering collision with the simulations. The simulated trajectories (marked by diamonds and squares) are overlapped with the observed particle trajectories (from the experiment shown in Fig. 3). One of the trajectories (diamonds) becomes noticeably dimmer at one end, suggesting that the scattering plane (in the center-of-mass reference frame) is not parallel to the illuminating laser sheet.

Image of FIG. 5.
FIG. 5.

Relative velocity distribution of microparticles, , for different phases of the wave period (for the experiment shown in Fig. 3). The distribution is normalized to unity, the dash line corresponds to the critical velocity .

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/content/aip/journal/pop/17/11/10.1063/1.3495979
2010-11-24
2014-04-17
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Agglomeration of microparticles in complex plasmas
http://aip.metastore.ingenta.com/content/aip/journal/pop/17/11/10.1063/1.3495979
10.1063/1.3495979
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