Abstract

A two-dimensional dusty plasma lattice in an rf discharge wasobserved. The structural and dynamical properties were analysed bycomputing pair correlation function, static structure factor,bond-orientational correlation function and mean square displacement.The bond-orientational correlation function was found to fit into thelaw of r-0.25, and the mean square displacementexperienced ``ballistic'', ``subdiffusive'' and ``diffusive'' regimes, bothof which together with the other parameters indicate that the two-dimensional dusty plasma stayed at a state between liquid and solid.

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