Shock compression of silver to 300 GPa: Wave profile measurements and melting transition
Abstract
Recent in-situ x-ray diffraction (XRD) measurements on laser-shock compressed Ag foils demonstrated a face-centered-cubic to body-centered-cubic transformation at ~150 GPa and melting between 172 and 197 GPa [Phys. Rev. Lett. 124, 235701 (2020)]. As a complement to the XRD work, we conducted plate impact experiments to obtain shock velocity and wave profile measurements on thicker Ag samples shock-compressed to peak stresses between 30 and 300 GPa. The shock velocity–particle velocity results were fitted very well by a linear relation over the entire stress range, providing an accurate determination of the Ag Hugoniot (locus of the stress-volume states achieved under shock compression). For peak stresses below 187 GPa and above 210 GPa—corresponding to the solid and liquid phases, respectively—the wave profiles show clean single waves. No wave profile features related to the fcc-bcc transformation at ~150 GPa were observed, implying minimal volume change for the transformation. For stresses between 187 and 210 GPa, an initial jump was followed by a time-dependent increase in the particle velocity (20–80 ns risetime) to the peak state—corresponding to the solid-liquid mixed phase response. Unlike the solid and liquid response, the mixed-phase response cannot be readily analyzed analytically. Instead, numerical simulations incorporating an accurate multiphase equationmore »
- Authors:
-
- Washington State Univ., Pullman, WA (United States)
- Publication Date:
- Research Org.:
- Washington State Univ., Pullman, WA (United States)
- Sponsoring Org.:
- USDOE National Nuclear Security Administration (NNSA)
- OSTI Identifier:
- 1818140
- Alternate Identifier(s):
- OSTI ID: 1818141
- Grant/Contract Number:
- NA0002007; NA0003957
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review B
- Additional Journal Information:
- Journal Volume: 104; Journal Issue: 1; Journal ID: ISSN 2469-9950
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; Crystal melting; Liquid-solid phase transition; Shock waves; Noble metals; Interferometry
Citation Formats
Wallace, M. K., Winey, J. M., and Gupta, Y. M. Shock compression of silver to 300 GPa: Wave profile measurements and melting transition. United States: N. p., 2021.
Web. doi:10.1103/physrevb.104.014101.
Wallace, M. K., Winey, J. M., & Gupta, Y. M. Shock compression of silver to 300 GPa: Wave profile measurements and melting transition. United States. https://doi.org/10.1103/physrevb.104.014101
Wallace, M. K., Winey, J. M., and Gupta, Y. M. Tue .
"Shock compression of silver to 300 GPa: Wave profile measurements and melting transition". United States. https://doi.org/10.1103/physrevb.104.014101. https://www.osti.gov/servlets/purl/1818140.
@article{osti_1818140,
title = {Shock compression of silver to 300 GPa: Wave profile measurements and melting transition},
author = {Wallace, M. K. and Winey, J. M. and Gupta, Y. M.},
abstractNote = {Recent in-situ x-ray diffraction (XRD) measurements on laser-shock compressed Ag foils demonstrated a face-centered-cubic to body-centered-cubic transformation at ~150 GPa and melting between 172 and 197 GPa [Phys. Rev. Lett. 124, 235701 (2020)]. As a complement to the XRD work, we conducted plate impact experiments to obtain shock velocity and wave profile measurements on thicker Ag samples shock-compressed to peak stresses between 30 and 300 GPa. The shock velocity–particle velocity results were fitted very well by a linear relation over the entire stress range, providing an accurate determination of the Ag Hugoniot (locus of the stress-volume states achieved under shock compression). For peak stresses below 187 GPa and above 210 GPa—corresponding to the solid and liquid phases, respectively—the wave profiles show clean single waves. No wave profile features related to the fcc-bcc transformation at ~150 GPa were observed, implying minimal volume change for the transformation. For stresses between 187 and 210 GPa, an initial jump was followed by a time-dependent increase in the particle velocity (20–80 ns risetime) to the peak state—corresponding to the solid-liquid mixed phase response. Unlike the solid and liquid response, the mixed-phase response cannot be readily analyzed analytically. Instead, numerical simulations incorporating an accurate multiphase equation of state for Ag—not currently available—are required to analyze the wave profiles measured at 187–210 GPa stresses. Furthermore, the present work shows the potential for using wave profile measurements to examine the melting transition under shock compression.},
doi = {10.1103/physrevb.104.014101},
journal = {Physical Review B},
number = 1,
volume = 104,
place = {United States},
year = {Tue Jul 06 00:00:00 EDT 2021},
month = {Tue Jul 06 00:00:00 EDT 2021}
}
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