Volume 22 Issue 3
Apr 2015
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LI Min, CUI Qi-Liang, LI Fang-Fei, ZHOU Qiang, WU Xiao-Xin, ZOU Guang-Tian. The Velocity and Elastic Constants in Fluid Oxygen under High Pressures and High Temperature[J]. Chinese Journal of High Pressure Physics, 2008, 22(3): 286-290 . doi: 10.11858/gywlxb.2008.03.011
Citation: LI Min, CUI Qi-Liang, LI Fang-Fei, ZHOU Qiang, WU Xiao-Xin, ZOU Guang-Tian. The Velocity and Elastic Constants in Fluid Oxygen under High Pressures and High Temperature[J]. Chinese Journal of High Pressure Physics, 2008, 22(3): 286-290 . doi: 10.11858/gywlxb.2008.03.011

The Velocity and Elastic Constants in Fluid Oxygen under High Pressures and High Temperature

doi: 10.11858/gywlxb.2008.03.011
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  • Corresponding author: ZHOU Qiang
  • Received Date: 19 Sep 2007
  • Rev Recd Date: 21 Nov 2007
  • Publish Date: 05 Sep 2008
  • We applied the Brillouin scattering and diamond-anvil cell (DAC) technique to study the liquid oxygen at high pressure and high temperature. The singlefrequency green (532 nm) laser was used as Brillouin excitation source, and the Brillouin spectra were collected by a newly developed 3+3 pass tandem Fabry-Perot interferometer. The sample was loaded into a modified Merrill-Bassett-type four-screw DAC and heated externally by a resistance heater. The backscattering and 60 scattering geometries were used simultaneously. In this paper, we presented the pressure dependences of sound velocities of liquid oxygen under high pressure and high temperature, and the results were consistent with those predicated by theoretical calculations. The elastic constants of liquid oxygen were determined under high pressure and high temperature, we suspected that the volume of liquid oxygen doesn't expend with temperature under the pressure range from 2.3 GPa to 4.9 GPa.

     

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