Abstract. The pseudopotentials of particle interaction of a strongly coupled semiclassical plasma, taking into account both quantum-mechanical effects of diffraction at short distances and also screening field effects at large distances are obtained. The limiting cases of potentials are considered.

The pseudopotentials of particle interaction, taking into account quantum-mechanical effects of diffraction at short distances and also screening effects at large distances, are obtained for a partially ionized plasma. The dielectric function method was used.

Using the dielectric function method, the effective interaction potential between ions in a dense semiclassical plasma is investigated. For the case of a partially ionized strongly coupled plasma, the effective potential of charge-unperturbed atom interaction is presented. Both effective potentials are screened. To obtain these potentials the dielectric function is used, taking into account the quantum diffraction effects in electron-electron interactions.

Key words Transport properties of plasmas, strongly coupled plasmas, elementary prozesses in plasmas. PACS 52.25. Fi, 52.87.Gr, 52.20.Kn We consider partially ionized hydrogen plasma for the density region Ò ´½¼ ½ ¤ ½¼ ¾¾ µ cm ¿ . The cross sections for scattering processes between the particles are calculated within the partial wave method. Charged particles in the system (electrons, protons) interact via an effective potential that takes into account threeparticle correlations. The Buckingham polarization potential is used to describe electron-atom and proton-atom interactions. The electrical conductivity is determined using the Chapman-Enskog method. The results are compared with other available data.

This paper presents radial distribution functions of dust particles obtained experimentally in dc and rf discharges. Pressure and interaction energy of dusty particles were calculated on the basis of these functions. The Langevin dynamics computer simulation for each experiment was performed. The comparisons with computer simulations are made.