Electromechanical Effect in Complex Plasmas
S. Zhdanov (1), M. Schwabe (1), R Heidemann (1), H.M. Thomas (1), M., Rubin-Zuzic (1), H. Rothermel (1), T. Hagl (1), A.V. Ivlev (1), G.E. Morfill, (1), V.I. Molotkov (2), A.M. Lipaev (2), O.F. Petrov (2), V.E. Fortov (2), T.
TL;DR
This paper reports experimental observations of auto-oscillatory wave patterns in complex plasmas under microgravity, revealing how wave activity correlates with discharge modulation and causes long-range particle migrations.
Contribution
It provides new experimental insights into wave dynamics and particle behavior in complex plasmas under microgravity conditions.
Findings
Observation of intense wave activity correlated with discharge modulation
Identification of periodic void contractions as wave initiators
Detection of long-range particle migrations driven by waves
Abstract
Experimental results on an auto-oscillatory pattern observed in a complex plasma are presented. The experiments are performed with an argon plasma which is produced under microgravity conditions using a capacitively-coupled rf discharge at low power and gas pressure. The observed intense wave activity in the complex plasma cloud correlates well with the low-frequency modulation of the discharge voltage and current and is initiated by periodic void contractions. Particle migrations forced by the waves are of long-range repulsive and attractive character.
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Taxonomy
TopicsPlasma Diagnostics and Applications · Electrohydrodynamics and Fluid Dynamics · Laser-induced spectroscopy and plasma