Perturbation theory for microfield distribution in a nonideal plasma

A perturbation theory of microfield distribution functions is developed for strongly nonideal plasma. Using the perturbation theory, a pseudopotential method describing microfields in nonideal plasma is constructed and tested. A relation is obtained between the microfield distribution functions in two- and three-component plasma models. An infinite series of corrections taking multiparticle quantum effects into account is obtained. The perturbation theory is constructed using the group-expansion method, generalized to consider nonthermodynamic quantities in the strongly nonideal case