title: Microscopic Particle Motions in Strongly Coupled Dusty Plasmas
abstract: The microscopic particle motions from the crystal to the disordered state of a dusty plasma with micrometer-sized silicon dioxide particle suspensions in a radio-frequency glow discharge system were studied through an optical microimaging system. Small-amplitude random motion around the lattice sites of the crystal state, relative domain motion with varying boundaries, cooperative hopping in the liquid state, and highly disordered motion with increasing radio-frequency power were observed. Chaotic states with different spatial scales under the coherent and stochastic coupling between dust particles and self-organized background plasma fluctuations were also demonstrated.
authors.affiliation: Department of Physics, National Central University, Chungli, Taiwan 32054, Republic of China.
authors.initials: L
authors.lastname: I
authors.initials: WT
authors.lastname: Juan
authors.initials: CH
authors.lastname: Chiang
authors.initials: JH
authors.lastname: Chu