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2001 Volume 18 Issue 1
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李西军, 李西军, 周显明, 王藩侯, 经福谦, 周显明, 经福谦. 2001: Restudy of Grüneisen Parameter of Iron in the Pressure Range of 90－160 Gpa, Chinese Physics Letters, 18(1): 85-87.
Citation: 李西军, 李西军, 周显明, 王藩侯, 经福谦, 周显明, 经福谦. 2001: Restudy of Grüneisen Parameter of Iron in the Pressure Range of 90－160 Gpa, Chinese Physics Letters, 18(1): 85-87.
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Restudy of Grüneisen Parameter of Iron in the Pressure Range of 90－160 Gpa

  • Institute of Electronic Engineering, China Academy of Engineering Physics, P.O.Box 919-501, Mianyang 621900

  • National Laboratory of Shock Wave Physics and Detonation Physics, Institute of Fluid Physics, China Academy of Engineering Physics, P.O.Box 919-111, Mianyang, 621900

  • Graduate School of China Academy of Engineering Physics, P.O.Box 2101, Beijing 100088

  • Institute of High Temperature and High Pressure Physics, Southwest Jiaotong University, Chengdu 610031

  • Available Online: 30/01/2001
  • Fund Project: the Science and Technology Foundation of China Academy of Engineering Physics under contract No. 990110
  • The Hugoniot equation-of-state (EOS) of porous iron with an average initial density of 6.904g/cma3 has been measured in the pressure range from 90 to 160GPa, and a good straight fitting D ＝ 2.997 + 1.603u has accordingly been obtained, where D is the shock wave velocity and u 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 result γ0ρ0 ＝ γρ ＝const, with γ0 ＝ 1.945 and ρ0 ＝ 7.856g/cm3, ρ being the density.
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    沈阳化工大学材料科学与工程学院 沈阳 110142

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Restudy of Grüneisen Parameter of Iron in the Pressure Range of 90－160 Gpa

  • Available Online: 30/01/2001

Abstract: The Hugoniot equation-of-state (EOS) of porous iron with an average initial density of 6.904g/cma3 has been measured in the pressure range from 90 to 160GPa, and a good straight fitting D ＝ 2.997 + 1.603u has accordingly been obtained, where D is the shock wave velocity and u 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 result γ0ρ0 ＝ γρ ＝const, with γ0 ＝ 1.945 and ρ0 ＝ 7.856g/cm3, ρ being the density.

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