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Title: An iterative forward analysis technique to determine the equation of state of dynamically compressed materials

Here, we developed an iterative forward analysis (IFA) technique with the ability to use hydrocode simulations as a fitting function for analysis of dynamic compression experiments. The IFA method optimizes over parameterized quantities in the hydrocode simulations, breaking the degeneracy of contributions to the measured material response. Velocity profiles from synthetic data generated using a hydrocode simulation are analyzed as a first-order validation of the technique. We also analyze multiple magnetically driven ramp compression experiments on copper and compare with more conventional techniques. Excellent agreement is obtained in both cases.
Authors:
 [1] ;  [1] ;  [1] ;  [1] ;  [1]
  1. Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Publication Date:
Report Number(s):
LLNL-JRNL-722880
Journal ID: ISSN 0021-8979; JAPIAU; TRN: US1800839
Grant/Contract Number:
AC52-07NA27344
Type:
Accepted Manuscript
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 121; Journal Issue: 19; Journal ID: ISSN 0021-8979
Publisher:
American Institute of Physics (AIP)
Research Org:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
OSTI Identifier:
1415562
Alternate Identifier(s):
OSTI ID: 1361874

Ali, S. J., Kraus, R. G., Fratanduono, D. E., Swift, D. C., and Eggert, J. H.. An iterative forward analysis technique to determine the equation of state of dynamically compressed materials. United States: N. p., Web. doi:10.1063/1.4983067.
Ali, S. J., Kraus, R. G., Fratanduono, D. E., Swift, D. C., & Eggert, J. H.. An iterative forward analysis technique to determine the equation of state of dynamically compressed materials. United States. doi:10.1063/1.4983067.
Ali, S. J., Kraus, R. G., Fratanduono, D. E., Swift, D. C., and Eggert, J. H.. 2017. "An iterative forward analysis technique to determine the equation of state of dynamically compressed materials". United States. doi:10.1063/1.4983067. https://www.osti.gov/servlets/purl/1415562.
@article{osti_1415562,
title = {An iterative forward analysis technique to determine the equation of state of dynamically compressed materials},
author = {Ali, S. J. and Kraus, R. G. and Fratanduono, D. E. and Swift, D. C. and Eggert, J. H.},
abstractNote = {Here, we developed an iterative forward analysis (IFA) technique with the ability to use hydrocode simulations as a fitting function for analysis of dynamic compression experiments. The IFA method optimizes over parameterized quantities in the hydrocode simulations, breaking the degeneracy of contributions to the measured material response. Velocity profiles from synthetic data generated using a hydrocode simulation are analyzed as a first-order validation of the technique. We also analyze multiple magnetically driven ramp compression experiments on copper and compare with more conventional techniques. Excellent agreement is obtained in both cases.},
doi = {10.1063/1.4983067},
journal = {Journal of Applied Physics},
number = 19,
volume = 121,
place = {United States},
year = {2017},
month = {5}
}

Works referenced in this record:

Magnetically driven isentropic compression to multimegabar pressures using shaped current pulses on the Z accelerator
journal, May 2005
  • Davis, Jean-Paul; Deeney, Christopher; Knudson, Marcus D.
  • Physics of Plasmas, Vol. 12, Issue 5, Article No. 056310
  • DOI: 10.1063/1.1871954

Analysis of shockless dynamic compression data on solids to multi-megabar pressures: Application to tantalum
journal, November 2014
  • Davis, Jean-Paul; Brown, Justin L.; Knudson, Marcus D.
  • Journal of Applied Physics, Vol. 116, Issue 20, Article No. 204903
  • DOI: 10.1063/1.4902863