Open AccessSound velocities of vanadium under shock compression
Author(s) -
Yuying Yu,
Yongqiang Tan,
Chenwei Dai,
Xuemei Li,
Yinghua Li,
Hua Tan
Publication year - 2014
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.63.026202
Subject(s) - vanadium , materials science , shock (circulatory) , discontinuity (linguistics) , phase transition , equation of state , measure (data warehouse) , compression (physics) , mechanics , thermodynamics , physics , composite material , metallurgy , medicine , computer science , mathematical analysis , mathematics , database
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.