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

Volume

32

Issue

2

fYear

2004

fDate

4/1/2004 12:00:00 AM

Firstpage

613

Lastpage

616

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;

fLanguage

English

Journal_Title

Plasma Science, IEEE Transactions on

Publisher

ieee

ISSN

0093-3813

Type

jour

DOI

10.1109/TPS.2004.826121

Filename

1308524