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Chinese Journal of High Pressure Physics  > 2003  >  17(1): 1-7 .
BI Yan, TAN Hua, JING Fu-Qian, ZHAO Min-Guang. Electrical Conductivity Measurements for Metals under Shock Compression[J]. Chinese Journal of High Pressure Physics, 2003, 17(1): 1-7 . doi: 10.11858/gywlxb.2003.01.001
Citation: BI Yan, TAN Hua, JING Fu-Qian, ZHAO Min-Guang. Electrical Conductivity Measurements for Metals under Shock Compression[J]. Chinese Journal of High Pressure Physics, 2003, 17(1): 1-7 . doi: 10.11858/gywlxb.2003.01.001
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Electrical Conductivity Measurements for Metals under Shock Compression

doi: 10.11858/gywlxb.2003.01.001
  • 1.

    Laboratory for Shock Wave and Detonation Physics Research, Institute of Fluid Physics, CAEP, Mianyang 621900, China;

  • 2.

    Institute of Physics, Southwest Jiaotong University, Chengdu 610031, China;

  • 3.

    Institute of Solid Physics, Sichuan Normal University, Chengdu 610068, China

More Information
  • Corresponding author: BI Yan
  • Received Date: 25 Jul 2002
  • Rev Recd Date: 23 Sep 2002
  • Publish Date: 05 Mar 2003
    Abstract
  • A novel method using four electrodes perpendicular to shock front was proposed to measure the electrical conductivity of metals under shock compression up to megabar pressures. Using the drilled sapphire disk as insulator can eliminate the shunting effect, which will result in a higher conductivity data. The electrical conductivities of iron under shock compression in the final equilibrium pressures ranging from 101 to 208 GPa were obtained by using the two-stage light gas gun techniques. The measured conductivity of iron varies from 1.45106 S/m at 101 GPa and 2 010 K, to 7.65 105 S/m at 208 GPa and 5 220 K, which first extend the electrical conductivity measurements of iron to pressures beyond 200 GPa. The experimental results indicate that the Bloch-Grneisen equation describing the high-pressure electrical conductivity of metals still holds true up to 200 GPa for -Fe (hcp structure).

     

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