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Dust mode in collisionally dominated complex plasmas with particle drift

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10 Author(s)
Ratynskaia, S. ; Centre for Interdisciplinary Plasma Sci., Max-Planck-Inst. fur Extraterrestrische Phys., Garching, Germany ; Kretschmer, M. ; Khrapak, S. ; Quinn, R.A.
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Experiments with flow of microparticles were conducted in a DC discharge. A sharp threshold in the neutral gas pressure for the onset of an unstable low-frequency dust wave mode was observed. Highly space- and time-resolved measurements of the microparticle flow combined with probe measurements of the plasma parameters have allowed detailed comparison with a theoretical model. The model demonstrates good qualitative and quantitative agreement with the experimental results providing accurate estimates of the particle charge.

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Plasma Science, IEEE Transactions on  (Volume:32 ,  Issue: 2 )