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
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
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.
LI Xi-Jun;ZHOU Xian-Ming;WANG Fan-Hou;JING Fu-Qian;. Restudy of Grüneisen Parameter of Iron in the Pressure Range of 90-160GPa[J]. 中国物理快报, 2001, 18(1): 85-87.
LI Xi-Jun, ZHOU Xian-Ming, WANG Fan-Hou, JING Fu-Qian,. Restudy of Grüneisen Parameter of Iron in the Pressure Range of 90-160GPa. Chin. Phys. Lett., 2001, 18(1): 85-87.
2001, Vol. 18 
