| Original Articles |
|
|
|
|
Restudy of Grüneisen Parameter of Iron in the Pressure Range of 90-160GPa |
| LI Xi-Jun1,2;ZHOU Xian-Ming2,3;WANG Fan-Hou2;JING Fu-Qian2,4 |
| 1Institute of Electronic Engineering, China Academy of Engineering Physics, P.O.Box 919-501, Mianyang 621900
2National Laboratory of Shock Wave Physics and Detonation Physics, Institute of Fluid Physics, China Academy of Engineering Physics, P.O.Box 919-111, Mianyang, 621900
3Graduate School of China Academy of Engineering Physics, P.O.Box 2101, Beijing 100088
4Institute of High Temperature and High Pressure Physics, Southwest Jiaotong University, Chengdu 610031
|
|
| Cite this article: |
|
LI Xi-Jun, ZHOU Xian-Ming, WANG Fan-Hou et al 2001 Chin. Phys. Lett. 18 85-87 |
|
|
|
Abstract The Hugoniot equation-of-state (EOS) of porous iron with an average initial density of 6.904g/cm3 has been measured in the pressure range from 90 to 160GPa, and a good straight fitting D = 2.997+1.603μ has accordingly been obtained, where D is the shock wave velocity and μ the particle velocity, both in units of km/s. Combining this with the Hugoniot EOS of non-porous iron, the Grüneisen EOS and the Rankine-Hugoniot energy conservation relation, and taking the possible solid--liquid transition correction, we have calculated the Grüneisen parameter γ of iron and obtained the γ0ρ0 = γρ =const, with γ0 = 1.945 and ρ0 = 7.856cm3, ρ being the density.
|
| Keywords:
62.50.+p
65.90.+i
91.35.-x
|
|
|
Published: 01 January 2001
|
|
| PACS: |
62.50.+p
|
|
| |
65.90.+i
|
(Other topics in thermal properties of condensed matter)
|
| |
91.35.-x
|
(Earth's interior structure and properties)
|
|
|
|
|
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
