Experimental Observations of Laser-Driven Tin Ejecta Microjet Interactions

ORAL  · Invited

Abstract

The study of high-velocity particle-laden flow interactions has broad applicability to fields ranging from planetary formation [1] to cloud interactions [2]. Ejecta microjets are micron-scale jets formed by strong shocks interacting with imprinted surfaces to generate streams of particles traveling at more than several kilometers per second. As such, ejecta microjets offer a methodology to study particle interactions at extreme velocities. We present the first time-sequences of x-ray radiography images of two interacting tin ejecta microjets from experiments performed on the OMEGA EP laser [3]. We observe that jets emerging from a shock pressure of 11.7 GPa pass through each other unattenuated, whereas jets emerging from a shock pressure of 116.0 GPa have five times greater densities and interact strongly, forming a cloud around the center-point of interaction. Radiation hydrodynamics simulations of particle-stream collisions capture many of the observed interaction behavior characteristics, but are unable to capture the full spread of the cloud formed. 

 

[1] M. Lambrechts et al., A&A 627, A83 (2019).

[2] T. Matsumoto et al., The Astrophysical Journal 801, 77 (2015).

[3] A. M. Saunders et al., PRL 127, 155002 (2021).

 

*LLNL-ABS-829246. 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 (LDRD) Grant No. 18-ERD-060.

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Publication: A. M. Saunders et al., PRL 127, 155002 (2021).
C. V. Stan et al., Rev. Sci. Instrum. 92, 053901 (2021).
K. K. Mackay et al., J. Apply. Phys. 128, 215904 (2020).
A. M. Saunders et al., AIP Conference Proceedings 2272, 120025 (2020).
T. Haxhimali et al.m AIP Conference Proceedings 2272, 120006 (2020).

Presenters

  • Alison Saunders

    • Lawrence Livermore Natl Lab

Authors

  • Alison Saunders

    • Lawrence Livermore Natl Lab

  • Camelia V Stan

    • Lawrence Livermore Natl Lab

  • Kyle Mackay

    • Lawrence Livermore Natl Lab

  • Brandon E Morgan

    • Lawrence Livermore Natl Lab

  • Jeremy Horwitz

    • Lawrence Livermore Natl Lab

  • Yuchen Sun

    • Lawrence Livermore Natl Lab

  • Suzanne J Ali

    • Lawrence Livermore Natl Lab

  • Hans Rinderknecht

    • Laboratory for Laser Energetics - Rochester

  • Tomorr Haxhimali

    • Lawrence Livermore Natl Lab

  • Yuan Ping

    • Lawrence Livermore Natl Lab

  • Fady M Najjar

    • Lawrence Livermore Natl Lab

  • Jesse E Pino

    • Lawrence Livermore Natl Lab

  • Jon H Eggert

    • Lawrence Livermore National Laboratory
    • Lawrence Livermore Natl Lab
    • Lawrence Livermore National Laboratory, Livermore, CA, USA

  • Hye-Sook Park

    • Lawrence Livermore Natl Lab