Improved equation of state of metals in the liquid-vapor region
Improved equation of state of metals in the liquid-vapor region
复制标题
改进的液-汽区金属状态方程
DOI：
10.1017/s0263034606060381
复制
发表时间：
2006
影响因子：
0.9
通讯作者：
S. Menon
中科院分区：
文献类型：
--
作者：
A. Ray;M. Srivastava;G. Kondayya;S. Menon
本文对现有的基于费米子-费米理论的“费米子方程态”模型进行了修正，以改善金属相图的低密度区。提出了一种估算液-气相变临界参数的方案。新模型再现实验临界等温线，以良好的准确度。此外，利用液-气共存区的热力学数据（包括等压膨胀以及释放的等熵线的结果）验证了所提出的模型。
The existing “quotidian equation state” model, based on Thomas-Fermi theory, is modified so as to improve the low density region of phase diagram of metals. A scheme for estimating the critical parameters of liquid-vapor phase transition is proposed. The new model reproduces experimental critical isotherms to a good degree of accuracy. Furthermore, the proposed model is validated with thermodynamic data in the liquid-vapor co-existence region, including results on isobaric expansion as well as released isentropes.