Influence of Polarization Phenomena on Radial Distribution Function of Dust Particles

A pseudopotential model of intergrain interaction in dusty plasmas is proposed to take into account both the electrostatic polarization and the screening phenomena. The derivation is entirely based on the renormalization theory of plasma particles interaction developed previously. Dust particles are assumed to be conductive such that the polarization phenomenon can strictly be treated in the charge‐image approximation. Such an assumption imposes no restraint on generality of the present consideration because the polarization effects are essential for accurate description of intergrain interaction potential. The pseudopotential model is then used in the hypernetted chain approximation (HNC) for the dust component to obtain the radial distribution function which reveals the non‐monotonic behavior at sufficiently large values of the dust coupling parameter. This can be viewed upon as a short‐ or even long‐range order formation in the dust component of the plasma. (© 2013 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)