https://doi.org/10.1140/epjst/e2016-60245-1
Regular Article
Anomalous phase diagrams in simplest plasma model
1 Moscow Institute of Physics and Technology, Dolgoprudny 141700, Russia
2 Joint Institute for High Temperature of RAS, Izhorskaya st. 13/2, 125412, Moscow, Russia
3 Russian State Agrarian University – Timiryazev Moscow Agricultural Academy, Department of Higher Mathematics, Moscow 127550, Russia
a e-mail: ilios@orc.ru
Received: 23 August 2016
Revised: 2 December 2016
Published online: 18 April 2017
A new first-order phase transition of gas-liquid type emerges in a modified one-component plasma model with uniformly compressible background. Structure and parameters of this phase transition strongly depend on the value of charge number Z. Under particular values of Z the model shows completely unusual topology of phase diagram. The similar anomalies have been recently observed in more complicated thermodynamic models and even real matter. Thus, deep investigation of the phase diagram properties based on simplified models can help to understand the nature of the phenomenon in more complicated situation. In this study we have improved our previous calculations and utilized more complicated model components equation of state provided by G. Chabrier and A.Y. Potekhin [Phys. Rev. E 58, 4941 (1998)].
© EDP Sciences, Springer-Verlag, 2017
