Chin. Phys. Lett.  2001, Vol. 18 Issue (1): 85-87    DOI:
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
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LI Xi-Jun, ZHOU Xian-Ming, WANG Fan-Hou et al  2001 Chin. Phys. Lett. 18 85-87
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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)  
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https://cpl.iphy.ac.cn/       OR      https://cpl.iphy.ac.cn/Y2001/V18/I1/085
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