Thermodynamic description of the liquid metals at pulsed energy flows impact

Abstract

Here we suggest semiempirical equations of state defining the behavior of some solid metals at pulsed energy flows impact. A new wide-range two-phase equation of state of metals is proposed. These equations have few free parameters. They are estimated for Na and Cu. Melting curves of metals are defined within both one-phase approximation using Lindeman criterion, and two-phase-approximation. Volume and entropy discontinuities are calculated as a function of pressure at melting curve for Na and Cu. We also compared all the simulations results to the available experimental data for these metals.