Theoretical investigation of the shock compressibility of copper in the average-atom approximation
Theoretical investigation of the shock compressibility of copper in the average-atom approximation
复制标题
平均原子近似下铜的冲击压缩性的理论研究
DOI：
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发表时间：
2018
影响因子：
2.2
通讯作者：
K. Khishchenko
中科院分区：
文献类型：
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作者：
M. A. Kadatskiy;K. Khishchenko
在平均原子近似下，用三种量子统计模型计算了铜的固体和多孔样品的Hugoniots：B-Fermi模型、带量子和交换修正的B-Fermi模型和Hartree-Fock-斯莱特模型。采用三种模型：玻尔兹曼理想气体模型、单组分等离子体模型和带电硬球模型，考虑了离子热运动和离子-离子相互作用的贡献。对铜在强冲击波中的压缩性进行了理论研究，并与铝、铁、钼和铅等标准物质进行了相关测量。计算已进行了广泛的压力范围从1到107 GPa，并与现有的数据从冲击波实验进行比较。本文提出了一种新的宽范围主Hugoniot近似，在平均原子近似下，用三种量子统计模型：B-Fermi模型、带量子和交换修正的B-Fermi模型和Hartree-Fock-斯莱特模型计算了铜的固体和多孔样品的Hugoniot。采用三种模型：玻尔兹曼理想气体模型、单组分等离子体模型和带电硬球模型，考虑了离子热运动和离子-离子相互作用的贡献。对铜在强冲击波中的压缩性进行了理论研究，并与铝、铁、钼和铅等标准物质进行了相关测量。计算已进行了广泛的压力范围从1到107 GPa，并与现有的数据从冲击波实验进行比较。提出了一个新的铜的宽范围主Hugoniot近似。
Hugoniots of solid and porous samples of copper have been calculated in the framework of the average-atom approximation by three quantum-statistical models: the Thomas–Fermi, the Thomas–Fermi with quantum and exchange corrections, and the Hartree–Fock–Slater ones. The contribution of thermal motion of ions and ion–ion interaction has been taken into account by using three models: the Boltzmann ideal gas, the one-component plasma, and the charged-hard-sphere system. The theoretical investigation of the compressibility of copper in strong shock waves has been carried out for relative measurements with various standard materials: aluminum, iron, molybdenum, and lead. Calculations have been performed over a wide range of pressures from 1 to 107 GPa and compared with available data from shock-wave experiments. A new wide-range principal Hugoniot approximation for copper is proposed.Hugoniots of solid and porous samples of copper have been calculated in the framework of the average-atom approximation by three quantum-statistical models: the Thomas–Fermi, the Thomas–Fermi with quantum and exchange corrections, and the Hartree–Fock–Slater ones. The contribution of thermal motion of ions and ion–ion interaction has been taken into account by using three models: the Boltzmann ideal gas, the one-component plasma, and the charged-hard-sphere system. The theoretical investigation of the compressibility of copper in strong shock waves has been carried out for relative measurements with various standard materials: aluminum, iron, molybdenum, and lead. Calculations have been performed over a wide range of pressures from 1 to 107 GPa and compared with available data from shock-wave experiments. A new wide-range principal Hugoniot approximation for copper is proposed.