Fig. 1: Different regimes dependent on the Havnes Parameter.
From: Decoupling of dust cloud and embedding plasma for high electron depletion in nanodusty plasmas

Effect of the dust density on the potential Φ of a dusty plasma, when the Havnes parameter P is increased. The plasma potential of the dust free plasma is Φp, the floating potential of dust grains Φf, and the plasma potential in a dense cloud is Φc. Adaption from Goertz24.