A few-parameter equation of state of the condensed matter

31st International Conference on Equations of State for Matter

Kraus, E.I.^1 ; Shabalin, I.I.^1

Inst. of Theoretical and Applied Mechanics of the Siberian Branch of the Russian Academy of Sciences, Institutskaya 4/1, Novosibirsk

630090, Russia^1

关键词: Condensed matter;    Debye approximation;    Equation of state;    High energy densities;    Parameter equations;    Theoretical calculations;    Thermal vibration;    Thermodynamic characteristics;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/774/1/012009/pdf
DOI  :  10.1088/1742-6596/774/1/012009

来源: IOP

【 摘 要 】

A simple caloric equation-of-state model is proposed to describe thermodynamic properties of solid materials without phase transitions with the minimum number of parameters as initial data. The thermal vibrations of the crystal lattice are described by the Debye approximation. The parameter values on the zero isotherm are calculated analytically from the generalized form of the Grüneisen function. Thermodynamic characteristics are calculated in the wide range of densities and pressures. The results of the theoretical calculations for these materials are exhaustively compared with the available experimental data for high energy densities.