Interactions Between Dust-Density Waves and Plasma Glow

Author

Bockwoldt, Tim ; Menzel, Kristoffer Ole ; Arp, O. ; Piel, Alexander

Author_Institution

Inst. fur Exp. und Angewandte Phys., Christian-Albrechts-Univ. zu Kiel, Kiel, Germany

Volume

41

Issue

4

fYear

2013

fDate

41365

Firstpage

769

Lastpage

773

Abstract

In complex plasmas, self-excited dust-density waves (DDWs) are observed below a critical gas pressure. Under microgravity conditions, the dust cloud fills the entire discharge volume so that extended wave fields can be generated. Here, we study the relationship between plasma glow and DDWs. Analyzing the dust density and plasma glow by means of video microscopy reveals self-organized oscillations of the entire plasma. In the region of strongly modulated DDWs, also waves occur in the plasma glow, having wavelengths and frequencies comparable to those of the DDWs.

Keywords

dusty plasmas; glow discharges; plasma density; plasma diagnostics; plasma interactions; plasma oscillations; plasma waves; complex plasmas; critical gas pressure; discharge volume; dust cloud; extended wave field; microgravity condition; plasma glow; plasma interactions; plasma waves; self-excited dust density waves; self-organized oscillation; video microscopy; Cameras; Discharges (electric); Dusty plasma; Frequency modulation; Oscillators; Dust-density waves (DDWs); dusty plasma; microgravity; plasma glow;

fLanguage

English

Journal_Title

Plasma Science, IEEE Transactions on

Publisher

ieee

ISSN

0093-3813

Type

jour

DOI

10.1109/TPS.2012.2229989

Filename

6380632