Quasi-two-dimensional complex plasma containing spherical particles and their binary agglomerates.
A unique type of quasi-two-dimensional complex plasma system was observed which consisted of monodisperse microspheres and their binary agglomerations (dimers). The particles and their dimers levitated in a plasma sheath at slightly different heights and formed two distinct sublayers. The system did not crystallize and may be characterized as a disordered solid. The dimers were identified based on their characteristic appearance in defocused images, i.e., rotating interference fringe patterns. The in-plane and interplane particle separations exhibit nonmonotonic dependence on the discharge pressure.
School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, USA.|Institut für Theoretische Physik II: Weiche Materie, Heinrich-Heine-Universität Düsseldorf, D-40225 Düsseldorf, Germany.
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Chaudhuri
Forschungsgruppe Komplexe Plasmen, Deutsches Zentrum für Luft- und Raumfahrt, D-82234, Weßling, Germany.
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Semenov
Forschungsgruppe Komplexe Plasmen, Deutsches Zentrum für Luft- und Raumfahrt, D-82234, Weßling, Germany.
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Nosenko
Forschungsgruppe Komplexe Plasmen, Deutsches Zentrum für Luft- und Raumfahrt, D-82234, Weßling, Germany.
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Thomas