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 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.
Mitic
S
S
Max-Planck-Institut für Extraterrestrische Physik, Garching, Germany.
Klumov
B A
BA
Konopka
U
U
Thoma
M H
MH
Morfill
G E
GE