Title :
Dust mode in collisionally dominated complex plasmas with particle drift
Author :
Ratynskaia, S. ; Kretschmer, M. ; Khrapak, S. ; Quinn, R.A. ; Thoma, M.H. ; Morfill, G.E. ; Zobnin, A. ; Usachev, A. ; Petrov, O. ; Fortov, V.
Author_Institution :
Centre for Interdisciplinary Plasma Sci., Max-Planck-Inst. fur Extraterrestrische Phys., Garching, Germany
fDate :
4/1/2004 12:00:00 AM
Abstract :
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.
Keywords :
discharges (electric); dusty plasmas; plasma collision processes; plasma drift waves; plasma flow; plasma probes; DC discharge; collisionally dominated complex plasmas; dust mode; highly space-resolved measurements; highly time-resolved measurements; microparticle flow; neutral gas pressure; particle charge; particle drift; plasma parameters; probe measurements; unstable low-frequency dust wave mode; Dusty plasma; Electron tubes; Gravity; Plasma confinement; Plasma density; Plasma measurements; Plasma properties; Plasma temperature; Plasma waves; Probes; Complex; dust particle charge; dust waves; dusty; plasma;
Journal_Title :
Plasma Science, IEEE Transactions on
DOI :
10.1109/TPS.2004.826121
