title: Spatial frequency clustering in nonlinear dust-density waves.
abstract: Self-excited density waves were studied in a strongly coupled dusty plasma of a radio-frequency discharge under microgravity conditions. The spatiotemporal evolution of the complicated three-dimensional wave field was investigated and analyzed for two different situations. The reconstructed instantaneous phase information of the wave field revealed a partial synchronization within multiple distinct domains. The boundaries of these regions coincide with the locations of topological defects.
authors.affiliation: Institut für Experimentelle und Angewandte Physik, Christian-Albrechts-Universiät, Kiel, Germany. menzel@physik.uni-kiel.de
authors.forename: K O
authors.initials: KO
authors.lastname: Menzel
authors.forename: O
authors.initials: O
authors.lastname: Arp
authors.forename: A
authors.initials: A
authors.lastname: Piel