Characterizing Laser-Driven Tin Microjet Interactions

ORAL

Abstract

The study of metal ejecta microjet interactions has broad applicability to fields ranging from particle dynamics modeling to materials physics [1]. Recent experiments at laser facilities have begun to study microjet formation [2], but there exist few examples of interaction studies. We present the first movies of jet-jet interactions from experiments performed on the OMEGA EP laser. Lasers drive shocks through two tin metal foils with angular trenches machined on their back surfaces. As the shocks break out, the trench features invert to form planar jets moving towards each other at speeds of several km/s. We use point-projection radiography to image the interacting jets. Jets emerging from tin releasing into solid have densities of 6 mg cm-3, whereas jets emerging from tin releasing into liquid have densities nearly three times greater. We discuss the observed interaction dynamics for both conditions.
[1] W. T. Buttler et al., J. Dyn. Behav. Mater. 3(2), 151–155 (2017).
[2] T. de Rességuier et al., J. Appl. Phys. 124, 065106 (2018).

*LLNL-ABS-815579. This work was performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under Contract DE-AC52-07NA27344 and supported by Laboratory Directed Research and Development Grant No. 18-ERD-060.

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Presenters

  • Alison Saunders

    • Lawrence Livermore Natl Lab

Authors

  • Alison Saunders

    • Lawrence Livermore Natl Lab

  • Camelia V Stan

    • Lawrence Livermore Natl Lab
    • Lawrence Livermore National Laboratory

  • Kyle Mackay

    • Lawrence Livermore Natl Lab

  • Suzanne J Ali

    • Lawrence Livermore Natl Lab
    • Shock Physics Group, Lawrence Livermore National Laboratory
    • Lawrence Livermore National Laboratory

  • Jessica R Taylor

    • Lawrence Livermore Natl Lab

  • Tomorr Haxhimali

    • Lawrence Livermore Natl Lab

  • Jeremy Horwitz

    • Lawrence Livermore Natl Lab

  • Yuan Ping

    • Lawrence Livermore Natl Lab

  • Brandon E Morgan

    • Lawrence Livermore Natl Lab

  • Fady Michel Najjar

    • Lawrence Livermore Natl Lab

  • Hans Rinderknecht

    • Laboratory for Laser Energetics

  • Jon Henry Eggert

    • Lawrence Livermore Natl Lab
    • Lawrence Livermore National Lab

  • Hye-Sook Park

    • Lawrence Livermore Natl Lab
    • Lawrence Livermore National Laboratory