2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/85601A theoretical model of vapor-liquid phase transition in a system of charged hard cores of different diameters is suggested (with the parameters of the transition obtained in a number of studies using the Monte Carlo method). The model is based on the assumption that, in the neighborhood of the critical point, the system of charged cores is a mixture of multipolarly interacting neutral complexes.10 pages, 3 figuresPlasma PhysicsChemical Physicstext