Structural properties of complex plasmas in a homogeneous dc discharge

We report on the first three-dimensional (3D) complex plasma structure analysis for an experiment that was performed in an elongated discharge tube in the absence of striations. The low frequency discharge was established with 1 kHz alternating dc current through a cylindrical glass tube filled with...

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Bibliographic Details
Published in:Physical review letters 2008-09, Vol.101 (12), p.125002-125002, Article 125002
Main Authors: Mitic, S, Klumov, B A, Konopka, U, Thoma, M H, Morfill, G E
Format: Article
Language:English
Subjects:
CAMERAS
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
DIRECT CURRENT
GLASS
LASERS
MOLECULAR DYNAMICS METHOD
NEON
PLASMA
PRESSURE RANGE PA
SHEETS
SIMULATION
THREE-DIMENSIONAL CALCULATIONS
TUBES
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Summary:We report on the first three-dimensional (3D) complex plasma structure analysis for an experiment that was performed in an elongated discharge tube in the absence of striations. The low frequency discharge was established with 1 kHz alternating dc current through a cylindrical glass tube filled with neon at 30 Pa. The injected particle cloud consisted of monodisperse microparticles. A scanning laser sheet and a camera were used to determine the particle position in 3D. The observed cylindrical-shaped particle cloud showed an ordered structure with a distinct outer particle shell. The observations are in agreement with performed molecular dynamics simulations.
ISSN:0031-9007
1079-7114
DOI:10.1103/physrevlett.101.125002