摘要
A semi-empirical equation of state model for aluminum in a warm dense matter regime is constructed. The equation of state, which is subdivided into a cold term, thermal contributions of ions and electrons, covers a broad range of phase diagram from solid state to plasma state. The cold term and thermal contribution of ions are from the Bushman–Lomonosov model, in which several undetermined parameters are fitted based on equation of state theories and specific experimental data. The Thomas–Fermi–Kirzhnits model is employed to estimate the thermal contribution of electrons. Some practical modifications are introduced to the Thomas–Fermi–Kirzhnits model to improve the prediction of the equation of state model. Theoretical calculation of thermodynamic parameters, including phase diagram, curves of isothermal compression at ambient temperature, melting, and Hugoniot, are analyzed and compared with relevant experimental data and other theoretical evaluations.
A semi-empirical equation of state model for aluminum in a warm dense matter regime is constructed. The equation of state, which is subdivided into a cold term, thermal contributions of ions and electrons, covers a broad range of phase diagram from solid state to plasma state. The cold term and thermal contribution of ions are from the Bushman–Lomonosov model, in which several undetermined parameters are fitted based on equation of state theories and specific experimental data. The Thomas–Fermi–Kirzhnits model is employed to estimate the thermal contribution of electrons. Some practical modifications are introduced to the Thomas–Fermi–Kirzhnits model to improve the prediction of the equation of state model. Theoretical calculation of thermodynamic parameters, including phase diagram, curves of isothermal compression at ambient temperature, melting, and Hugoniot, are analyzed and compared with relevant experimental data and other theoretical evaluations.
作者
Kun Wang
Dong Zhang
Zong-Qian Shi
Yuan-Jie Shi
Tian-Hao Wang
Yue Zhang
王坤;张董;史宗谦;石元杰;王天浩;张阅(State Key Laboratory of Reliability and Intelligence of Electrical Equipment Hebei University of Technology;Key Laboratory of Electromagnetic Field and Electrical Apparatus Reliability of Hebei Province Hebei University of Technology;State Key Laboratory of Electrical Insulation and Power Equipment Xi’an Jiaotong University;Institute of Electronic Engineering China Academy of Engineering Physics)
基金
Project supported by the National Natural Science Foundation of China(Grant No.51807050)
the National Basic Research Program of China(Grant No.2015CB251002)
the Program for the Top Young and Middle-aged Innovative Talents of Higher Learning Institutions of Hebei,China(Grant No.BJ2017038)
