Equations of state for Cu, Ag, and Au for wide ranges in temperature and pressure up to 500 GPa and above
Equations of state for Cu, Ag, and Au for wide ranges in temperature and pressure up to 500 GPa and above
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DOI：
10.1063/1.1370170
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发表时间：
2001-03-01
影响因子：
4.3
通讯作者：
Sievers, W
中科院分区：
文献类型：
--
作者：
Holzapfel, WB;Hartwig, M;Sievers, W
Gruneisen参数（γ（V））的体积依赖性的新的约束来自早期的冲击波数据与最近的超声波数据的体积模量K-0和它的压力导数K-0'在一个严格的Mie-Gruneisen模型的框架的比较。这个模型使用了一个特殊的“修正的伪德拜-爱因斯坦模型”，用于精确表示热能和压力。在此框架内，以前的冲击波和静态数据之间的差异，有关的状态方程的各种参考材料（如铜，银，和Au）的解决，相应的压力规模进行了改进，并估计在这个规模的不确定性。(C)2001年美国物理学会。
New constraints on the volume dependence of the Gruneisen parameter(gamma (V)) are derived from a comparison of earlier shock wave data with more recent ultrasonic data for the bulk modulus K-0 and its pressure derivative K-0' in the frame of a rigorous Mie-Gruneisen model. This model uses a specially ''Modified pseudo-Debye-Einstein model" for an accurate representation of the thermal energy and pressure. Within this framework, previous discrepancies between shock wave and static data concerning the equations of state for various reference materials (like Cu, Ag, and Au) are resolved, the corresponding pressure scale is refined, and the uncertainties in this scale are estimated. (C) 2001 American Institute of Physics.