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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, Jin, Ke, Cai, Lingcang, 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, Jin, Ke, Cai, Lingcang, Geng, Huayun, Tan, Ye, & Li, Jun. Sound velocity of tantalum under shock compression in the 18–142 GPa range. United States. https://doi.org/10.1063/1.4919845
Xi, Feng, Jin, Ke, Cai, Lingcang, Geng, Huayun, Tan, Ye, and Li, Jun. 2015. "Sound velocity of tantalum under shock compression in the 18–142 GPa range". United States. https://doi.org/10.1063/1.4919845.
@article{osti_22410200,
title = {Sound velocity of tantalum under shock compression in the 18–142 GPa range},
author = {Xi, Feng and Jin, Ke and Cai, Lingcang 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},
url = {https://www.osti.gov/biblio/22410200}, journal = {Journal of Applied Physics},
issn = {0021-8979},
number = 18,
volume = 117,
place = {United States},
year = {Thu May 14 00:00:00 EDT 2015},
month = {Thu May 14 00:00:00 EDT 2015}
}