Structural and Dynamical Analysis of a Two—Dimensional Dusty Plasma Lattice

A two-dimensional dusty plasma lattice in an rf discharge was observed.The structural and dynamical porperties were analysed by computing pair correlation function,static structure factor.bond-orientational correlation function and mean square displacement.The bond-orientational correlation function was found to fit into the law of ^-0.25,and the mean square displacement experienced “ballistic“,“subdiffusive“and “diffusive“regimes, both of which together with the other parameters indicate that the two-dimensional dusty plasma stayed at a state between liquid and solid.