Volume 17 Issue 2
Apr 2015
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LIU Wei, DU Jian-Guo, YU Yong, BAI Li-Ping, WANG Chuan-Yuan. Correction of Temperature Gradient in Sample Cell of Pulse Transmission Experimental Setup on Multi-Anvil High Pressure Apparatus[J]. Chinese Journal of High Pressure Physics, 2003, 17(2): 95-100 . doi: 10.11858/gywlxb.2003.02.003
Citation: LIU Wei, DU Jian-Guo, YU Yong, BAI Li-Ping, WANG Chuan-Yuan. Correction of Temperature Gradient in Sample Cell of Pulse Transmission Experimental Setup on Multi-Anvil High Pressure Apparatus[J]. Chinese Journal of High Pressure Physics, 2003, 17(2): 95-100 . doi: 10.11858/gywlxb.2003.02.003

Correction of Temperature Gradient in Sample Cell of Pulse Transmission Experimental Setup on Multi-Anvil High Pressure Apparatus

doi: 10.11858/gywlxb.2003.02.003
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  • Corresponding author: LIU Wei
  • Received Date: 18 Oct 2002
  • Rev Recd Date: 20 Jan 2003
  • Publish Date: 05 Jun 2003
  • There is a remarkable temperature gradient in the sample cell in the pulse transmission experimental setup on a multi-anvil high pressure apparatus. The elastic wave velocity was corrected by combination of experiment, theory analysis, and computation in terms of the experimental data on temperature distribution in the sample and the linear decrease of temperature dependence of elastic wave velocities in rocks at a given temperature range. The experimental vP in amphibolite was corrected by this method and compared with the vP without correction: the absolute correction value turned greater as the temperature increased; at 530 ℃, the greatest correction of velocities in the sample X and sample Y were up to -0.270 km/s and -0.118 km/s with the decreases of 3.3% and 1.5%, respectively. This method improves the accuracy of vP measurement in high pressure and temperature experiments, which is useful to interpret geophysical data by combining the experimental results.

     

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