Shock Response of Solid CeO$_{\mathrm{2}}$ to 25 GPa

ORAL

Abstract

To examine the shock-induced deformation response of cerium (IV) oxide (CeO$_{\mathrm{2}})$ -- a widely used x-ray standard -- solid samples were shock compressed to peak stresses ranging between 2 -- 25 GPa. Shock wave velocities through the sample and particle velocity histories at the sample/window interface were measured using laser velocimetry. A two-wave structure was observed at higher peak stresses, indicating an elastic-inelastic response, from which the Hugoniot elastic limit was determined. The experimental data also provided the elastic-inelastic Hugoniot. Insights obtained from numerical simulations of our results and from comparison with past shock work on porous CeO$_{\mathrm{2}}$ will be discussed.

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Authors

  • John Lang

    • Los Alamos National Laboratory
    • LANL

  • Justin Steiner

    • Georgia Institute of Technology

  • Anirban Mandal

    • Los Alamos National Laboratory
    • Shock and Detonation Physics (M-9), Los Alamos National Laboratory, Los Alamos NM 87545

  • Austin Goodbody

    • Los Alamos National Laboratory