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Sound velocities of vanadium under shock compression

Yu Yu-Ying Tan Ye Dai Cheng-Da Li Xue-Mei Li Ying-Hua Tan Hua

Sound velocities of vanadium under shock compression

Yu Yu-Ying, Tan Ye, Dai Cheng-Da, Li Xue-Mei, Li Ying-Hua, Tan Hua
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  • Received Date:  27 July 2013
  • Accepted Date:  03 September 2013
  • Published Online:  20 January 2014

Sound velocities of vanadium under shock compression

  • 1. National Key Laboratory of Shock Waves and Detonation Physics, Institute of Fluid Physics, Chinese Academy of Engineering Physics, Mianyang 621900, China
Fund Project:  Project supported by the Defense Industrial Development Program (Grant No. B1520110001), the National Natural Science Foundation of China (Grant Nos. 11172281, 11272293), and Talent Development Project of CAEP (Grant No. ZX01115).

Abstract: A series of reverse-impact experiments is performed on vanadium at peak shock pressures from 32 GPa to 88 GPa. A displacement interferometer is used to measure the particle velocity profile at the vanadium/LiF window interface. Analysis of these profile provides a measure of sound velocity of vanadium in the Hugoniot state. The transition from body-centered cubic structure to rhombohedral structure phase at ~ 60 GPa is identified by the discontinuity of the sound velocity against shock pressure. This transition pressure is consistent with the data from high pressure diamond anvil cell experiments and first-principle calculations.

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