Equation of state for tungsten over a wide range of densities and internal energies

Abstract

A caloric model, which describes the pressure-density-internal-energy relationship in a broad region of condensed-phase states, is applied for tungsten. As distinct from previously known caloric equations of state for this material, a new form of the cold-compression curve at T = 0 K is used. Thermodynamic characteristics along the cold curve and shock Hugoniots are calculated for the metal and compared with some theoretical results and experimental data available at high energy densities.

Equation of state for iridium at high pressures

“…The EOS for matter is developed on the basis of the model [22][23][24], in which thermodynamic functions are related by the following general dependence:…”

Comparison of Hugoniots calculated for aluminum in the framework of three quantum-statistical models

“…Various quantum-statistical cell models with the approximation of self-consistent field are widely used for development of equations of state [1][2][3]. The application of these approximations is even more valid, the higher the temperature and the density of matter [1].…”

Study of extreme states of matter at high energy densities and high strain rates with powerful lasers

“…For calculating of values σ sp and V /V 0 , a one-dimensional computational code was developed and used, which is based on Courant-Isaacson-Rees scheme for hydrodynamic equations [40,41]. The code is supplemented with wide-range equations of state of materials in question [42][43][44][45][46][47]. In calculations, it was suggested that the time profile of the ablation pressure pulse on the irradiated surface of the target replicates the profile of laser pulse intensity.…”