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Title: Mechanical response of lithium fluoride under off-principal dynamic shock-ramp loading

Abstract

Single crystal lithium fluoride (LiF), oriented [100], was shock loaded and subsequently shocklessly compressed in two experiments at the Z Machine. We employed velocimetry measurements in order to obtain an impactor velocity, shock transit times, and in-situ particle velocities for LiF samples up to ~1.8 mm thick. We also performed a dual thickness Lagrangian analysis on the in-situ velocimetry data to obtain the mechanical response along the loading path of these experiments. Finally, we observed an elastic response on one experiment during initial shockless compression from 100 GPa before yielding. The relatively large thickness differences utilized for the dual sample analyses (up to ~1.8 mm) combined with a relative timing accuracy of ~0.2 ns resulted in an uncertainty of less than 1% on density and stress at ~200 GPa peak loading on one experiment and <4% on peak loading at ~330 GPa for another. The stress-density analyses from these experiments compare favorably with recent equation of state models for LiF.

Authors:
 [1];  [1];  [2]
  1. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
  2. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Washington State Univ., Pullman, WA (United States). Inst. for Shock Physics
Publication Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA), Office of Defense Science (NA-113)
OSTI Identifier:
1332913
Alternate Identifier(s):
OSTI ID: 1330114
Report Number(s):
SAND2016-10760J
Journal ID: ISSN 0021-8979; JAPIAU; 648585; TRN: US1700175
Grant/Contract Number:  
AC04-94AL85000
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 120; Journal Issue: 16; Journal ID: ISSN 0021-8979
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS

Citation Formats

Seagle, Christopher T., Davis, Jean-Paul, and Knudson, Marcus D. Mechanical response of lithium fluoride under off-principal dynamic shock-ramp loading. United States: N. p., 2016. Web. doi:10.1063/1.4965990.
Seagle, Christopher T., Davis, Jean-Paul, & Knudson, Marcus D. Mechanical response of lithium fluoride under off-principal dynamic shock-ramp loading. United States. https://doi.org/10.1063/1.4965990
Seagle, Christopher T., Davis, Jean-Paul, and Knudson, Marcus D. Wed . "Mechanical response of lithium fluoride under off-principal dynamic shock-ramp loading". United States. https://doi.org/10.1063/1.4965990. https://www.osti.gov/servlets/purl/1332913.
@article{osti_1332913,
title = {Mechanical response of lithium fluoride under off-principal dynamic shock-ramp loading},
author = {Seagle, Christopher T. and Davis, Jean-Paul and Knudson, Marcus D.},
abstractNote = {Single crystal lithium fluoride (LiF), oriented [100], was shock loaded and subsequently shocklessly compressed in two experiments at the Z Machine. We employed velocimetry measurements in order to obtain an impactor velocity, shock transit times, and in-situ particle velocities for LiF samples up to ~1.8 mm thick. We also performed a dual thickness Lagrangian analysis on the in-situ velocimetry data to obtain the mechanical response along the loading path of these experiments. Finally, we observed an elastic response on one experiment during initial shockless compression from 100 GPa before yielding. The relatively large thickness differences utilized for the dual sample analyses (up to ~1.8 mm) combined with a relative timing accuracy of ~0.2 ns resulted in an uncertainty of less than 1% on density and stress at ~200 GPa peak loading on one experiment and <4% on peak loading at ~330 GPa for another. The stress-density analyses from these experiments compare favorably with recent equation of state models for LiF.},
doi = {10.1063/1.4965990},
journal = {Journal of Applied Physics},
number = 16,
volume = 120,
place = {United States},
year = {Wed Oct 26 00:00:00 EDT 2016},
month = {Wed Oct 26 00:00:00 EDT 2016}
}

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Cited by: 14 works
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Works referenced in this record:

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Works referencing / citing this record:

X-ray diffraction of ramp-compressed aluminum to 475 GPa
journal, August 2018

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First-principles simulations of warm dense lithium fluoride
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First-Principles Simulations of Warm Dense Lithium Fluoride
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