2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/116939Remarkable feature of new first-order phase transitions of gas-liquid gas-crystal types in combination with traditional solid-liquid transition are under consideration in a modified one-component plasma model (OCP) with uniform, but compressible background. Structure and parameters of this phase transition strongly depend on the value of charge number Z. Under high values of Z the model shows remarkable and completely unusual topology of phase diagram.4 pages, 4 figuresPlasma Physicstext