Self-diffusion in strongly coupled Yukawa systems (complex plasmas)
  We show that the idea of mapping between the Newtonian and Brownian diffusivities proposed and tested on a class of particle systems interacting via soft and ultra-soft potentials (IPL, Gaussian core, Hertzian, and effective star-polymer) by Pond {\it et al}., [Soft Matter {\bf 7}, 9859 (2011)] is also applicable to the Yukawa (screened Coulomb) interaction. Some of the implications of this result with respect to self-diffusion in strongly coupled complex (dusty) plasmas are discussed. 
Sergey A. Khrapak, Olga S. Vaulina, and Gregor E. Morfill
physics.plasm-ph cond-mat.soft