Figure 4
From: Direct observation of melting in a two-dimensional driven granular system
The susceptibilities, χ6 and χT as a function of packing fractions.
The peaks of the orientational susceptibility χ6 and the translational susceptibility χT clearly indicate two transition points, at ϕ = 0.716 and ϕ = 0.781 respectively. The error bars are standard deviations from three independent calculations and extrapolations.
