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Title: Sound velocity of tantalum under shock compression in the 18–142 GPa range

Abstract

Dynamic compression experiments of tantalum (Ta) within a shock pressure range from 18–142 GPa were conducted driven by explosive, a two-stage light gas gun, and a powder gun, respectively. The time-resolved Ta/LiF (lithium fluoride) interface velocity profiles were recorded with a displacement interferometer system for any reflector. Sound velocities of Ta were obtained from the peak state time duration measurements with the step-sample technique and the direct-reverse impact technique. The uncertainty of measured sound velocities were analyzed carefully, which suggests that the symmetrical impact method with step-samples is more accurate for sound velocity measurement, and the most important parameter in this type experiment is the accurate sample/window particle velocity profile, especially the accurate peak state time duration. From these carefully analyzed sound velocity data, no evidence of a phase transition was found up to the shock melting pressure of Ta.

Authors:
; ; ; ; ;  [1]
  1. National Key Laboratory of Shock Waves and Detonation Physics, Institute of Fluid Physics, CAEP, P.O. Box 919-102 Mianyang, Sichuan 621999 (China)
Publication Date:
OSTI Identifier:
22410200
Resource Type:
Journal Article
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 117; Journal Issue: 18; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0021-8979
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; COMPRESSION; INTERFACES; LITHIUM FLUORIDES; MELTING; PARTICLES; POWDERS; PRESSURE DEPENDENCE; PRESSURE RANGE GIGA PA; SOUND WAVES; TANTALUM; TIME RESOLUTION; VISIBLE RADIATION

Citation Formats

Xi, Feng, E-mail: xifeng@caep.cn, Jin, Ke, Cai, Lingcang, E-mail: cai-lingcang@aliyun.com, Geng, Huayun, Tan, Ye, and Li, Jun. Sound velocity of tantalum under shock compression in the 18–142 GPa range. United States: N. p., 2015. Web. doi:10.1063/1.4919845.
Xi, Feng, E-mail: xifeng@caep.cn, Jin, Ke, Cai, Lingcang, E-mail: cai-lingcang@aliyun.com, Geng, Huayun, Tan, Ye, & Li, Jun. Sound velocity of tantalum under shock compression in the 18–142 GPa range. United States. doi:10.1063/1.4919845.
Xi, Feng, E-mail: xifeng@caep.cn, Jin, Ke, Cai, Lingcang, E-mail: cai-lingcang@aliyun.com, Geng, Huayun, Tan, Ye, and Li, Jun. Thu . "Sound velocity of tantalum under shock compression in the 18–142 GPa range". United States. doi:10.1063/1.4919845.
@article{osti_22410200,
title = {Sound velocity of tantalum under shock compression in the 18–142 GPa range},
author = {Xi, Feng, E-mail: xifeng@caep.cn and Jin, Ke and Cai, Lingcang, E-mail: cai-lingcang@aliyun.com and Geng, Huayun and Tan, Ye and Li, Jun},
abstractNote = {Dynamic compression experiments of tantalum (Ta) within a shock pressure range from 18–142 GPa were conducted driven by explosive, a two-stage light gas gun, and a powder gun, respectively. The time-resolved Ta/LiF (lithium fluoride) interface velocity profiles were recorded with a displacement interferometer system for any reflector. Sound velocities of Ta were obtained from the peak state time duration measurements with the step-sample technique and the direct-reverse impact technique. The uncertainty of measured sound velocities were analyzed carefully, which suggests that the symmetrical impact method with step-samples is more accurate for sound velocity measurement, and the most important parameter in this type experiment is the accurate sample/window particle velocity profile, especially the accurate peak state time duration. From these carefully analyzed sound velocity data, no evidence of a phase transition was found up to the shock melting pressure of Ta.},
doi = {10.1063/1.4919845},
journal = {Journal of Applied Physics},
issn = {0021-8979},
number = 18,
volume = 117,
place = {United States},
year = {2015},
month = {5}
}