Ramp Compression Measurements of Al, Fe, Ta, and W to a Few Mbar

ORAL

Abstract

We present ramp compression measurements of Ta, W, Al, and Fe using both pulse power and laser ramp compression platforms. Comparing both platforms allows us to span material thicknesses from 10 $\mu$m to 1mm and compression timescales from 1 ns to several hundred ns. While it is difficult to study precisely the same material on both platforms, we compare the stress density and elastic plastic transition for each of these metals under ramp loading to Mbar stress levels.

*This work was performed under the auspices of the U.S. Dept. of Energy by the University of California, Lawrence Livermore National Laboratory under contract No. W-7405-Eng-48.

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Authors

  • Gilbert W. Collins

    • Lawrence Livermore National Laboratory
    • LLNL

  • Jon H. Eggert

    • Lawrence Livermore National Laboratory
    • LLNL

  • Raymond Smith

    • Lawrence Livermore National Laboratory
    • Lawrence Livermore National Laboratory, Livermore

  • Marina Bastea

    • Lawrence Livermore National Laboratory

  • Dave Reisman

    • Lawrence Livermore National Laboratory

  • Y. Gupta

    • Washington State University

  • Y. Gupta

    • Washington State University