Equations of state for metals at high energy densities

Abstract

Summary form only given. A description of the thermodynamic properties of matter in a wide range of temperatures and pressures is of fundamental as well as practical interests. The equations of state for metals over the range from normal conditions to extremely high energy densities are necessary for hydrodynamic simulations of processes in plasmas under pulsed power influences. In this report, a new semiempirical equations-of-state model, which takes into account melting, evaporation and ionization effects, is proposed. Wide-range equations of state for some metals (aluminum, gold, tungsten and others) are constructed on the basis of model developed. Calculation results are compared with available high-temperature, high-pressure experimental data. Most essential dynamic experiments are described. The equations of state can be used efficiently in numerical simulations of different physical processes in the metals at high energy densities.