Dynamical states in two-dimensional charged dust particle clusters in plasma medium
arXiv:2005.07980 · doi:10.1103/PhysRevE.102.023213
Abstract
The formation of novel dynamical states for a collection of dust particles in two dimensions has been shown with the help of Molecular Dynamics (MD) simulation. The charged dust particles interact with each other with Yukawa pair potential mimicking the screening due to plasma. Additionally, an external radial confining force has also been applied to the dust particles to keep them radially confined. When the particle number is low ( say a few), they get arranged on the radial location corresponding to multiple rings/shells. For specific numbers, such an arrangement of particles is stationary. However, for several cases, the cluster of dust particles relaxes to a state for which the dust particles on rings display inter-shell rotation. For a larger number of dust particles ( a few hundred for instance ) a novel equilibrium state with coherent rigid body displaying angular oscillation of the entire cluster is observed. A detailed characterization of the formation of these states in terms of particle number, coupling parameter, etc., has been provided.
arXiv comment10 pages, 12 figures, accepted in Physical Review E
References in corpus (12)
- Superdiffusion and non-Gaussian statistics in a driven-dissipative 2D dusty plasma
- Shear Flows and Shear Viscosity in a Two-Dimensional Yukawa System (Dusty Plasma)
- Viscoelasticity of 2D liquids quantified in a dusty plasma experiment
- Observation of Three-dimensional Long-range Order in Smaller Ion Coulomb Crystals in an rf Trap
- Green-Kubo relation for viscosity tested using experimental data for a 2D dusty plasma
- Experimental demonstration of a dusty plasma ratchet rectification and its reversal
- Identifying anomalous diffusion and melting in dusty plasmas
- Simulating the dynamics of complex plasmas
- Frequency-dependent shear viscosity of a liquid 2D dusty plasma
- Visco-elastic fluid simulations of coherent structures in strongly coupled dusty plasma medium
- Properties of two - dimensional dusty plasma clusters
- Interplay of single particle and collective response in molecular dynamics simulation of dusty plasma system