We investigate the effects of dynamical screening on the static transport properties. We review the low density expansion for the electron-electron and electron-ion correlation functions and give results for a 6-moment approach within linear response theory. The expansion coefficients are given. The convergence of thermoelectric transport coefficients is examined in dependence of the rank of the collision term determinant. The results are compared with previous calculations and experiments. Effective Debye screening radii derived from the Gould-DeWitt scheme for the inclusion of strong collisions as well as dynamical effects are discussed.

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The influence of the electronic degeneration on the electrical conductivity of the fully ionized low-density hightemperature plasma is investigated. The consideration basis is the following: the linear response theory in the formulation of Zubarev, Lenard-Balescu-type collision integrals with dynamical screening of the Coulomb interaction, the first Born approximation in the thermodynamic Green's functions technique. Asymptotic expansions for correlation functions for electron-ion and electron-electron scattering as functions of the degeneracy parameter Θ = kBT /EF in the range from Θ 1 to Θ → 1 are obtained. The results presented are improved approximation formulas for the correlation functions and the electrical conductivity. The Spitzer factors for the electrical conductivity are slightly corrected.

Within linear response theory, a general approach to the thermoelectric transport coefficients for fully ionized hydrogen-type plasma has been given. Different approximations for the collision integral are considered. Particular attention is given to dynamical screening and the ion-ion structure factor. Results are presented for the electrical conductivity, the thermal conductivity, and the thermopower in the non-degenerate limit.

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