Chaotic dynamics of small sized charged Yukawa Dust Clusters

TL;DR

This paper investigates the chaotic behavior and dynamics of small charged dust clusters with Yukawa interactions, revealing phenomena like time reversal of angular rotation and complex rotational behaviors.

Contribution

It provides a detailed analysis of the chaotic dynamics and time reversal phenomena in small Yukawa dust clusters, expanding understanding of their complex behavior.

Findings

Chaotic behavior observed in dynamical time reversal of angular rotation.

Opposite rotation directions in multi-ring structures.

Random intervals of rotation direction change.

Abstract

In a recent work, [1] the equilibrium of a cluster of charged dust particles mutually interacting with screened Coulomb force and radially confined by an externally applied electric field in a 2-D configuration was studied. It was shown that the particles arranged themselves on discrete radial rings forming a lattice structure. In some cases with the specific number of particles, no static equilibrium was observed; instead, angular rotation of particles positioned at various rings was observed. In a two-ringed structure, it was shown that the direction of rotation was opposite. The direction of rotation was also observed to change apparently at random time intervals. A detailed characterization of the dynamics of small-sized Yukawa clusters has been carried out in the present work. In particular, it has been shown that the dynamical time reversal of angular rotation exhibits chaotic behavior.