title: Phase Separation of Binary Charged Particle Systems with Small Size Disparities using a Dusty Plasma.
abstract: The phase separation in binary mixtures of charged particles has been investigated in a dusty plasma under microgravity on parabolic flights. A method based on the use of fluorescent dust particles was developed that allows us to distinguish between particles of slightly different size. A clear trend towards phase separation even for smallest size (charge) disparities is observed. The diffusion flux is directly measured from the experiment and uphill diffusion coefficients have been determined.
authors.affiliation: Institut für Physik, Ernst-Moritz-Arndt-Universität Greifswald, 17489 Greifswald, Germany.
authors.forename: Carsten
authors.initials: C
authors.lastname: Killer
authors.affiliation: IEAP, Christian-Albrechts-Universität Kiel, 24098 Kiel, Germany.
authors.forename: Tim
authors.initials: T
authors.lastname: Bockwoldt
authors.affiliation: IEAP, Christian-Albrechts-Universität Kiel, 24098 Kiel, Germany.
authors.forename: Stefan
authors.initials: S
authors.lastname: Schütt
authors.affiliation: Institut für Physik, Ernst-Moritz-Arndt-Universität Greifswald, 17489 Greifswald, Germany.
authors.forename: Michael
authors.initials: M
authors.lastname: Himpel
authors.affiliation: Institut für Physik, Ernst-Moritz-Arndt-Universität Greifswald, 17489 Greifswald, Germany.
authors.forename: André
authors.initials: A
authors.lastname: Melzer
authors.affiliation: IEAP, Christian-Albrechts-Universität Kiel, 24098 Kiel, Germany.
authors.forename: Alexander
authors.initials: A
authors.lastname: Piel