Plasma Debye screening model

The asymptotic ion densities satisfy the electrical neutrality condition JT riiZi(oo) = n(oo). The model developed by Stewart and Pyatt [58] was very general and limiting cases of the Debye screening model, and also that due to strongly coupled plasma, follow as special cases. 

The simplest approach conventionally employed to describe the grain screening in colloidal plasmas is the Debye-Hiickel (DH) approximation, or, its modification for the case of the grain of finite size, the DLVO theory [6,7], The DH approximation represents the version of Poisson-Boltzmann (PB) approach linearized with respect to the effective potential based on the assumption that the system is in the state of thermodynamical equilibrium. The DH theory yields the effective interparticle interaction in the form of the so-called Yukawa potential which constitutes the basis for the Yukawa model. 

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