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Hydrodynamic instabilities and mixing in high energy density settings on NIF

ORAL

Abstract

Hydrodynamic instability experiments are being developed and carried out on the National Ignition Facility (NIF) laser at LLNL through the NIF Discovery Science (basic science) program and the high energy density (HED) science program. The motivations are many, including supernova explosion dynamics; supernova remnant evolution; planetary formation dynamics; and asteroid impact and breakup dynamics; as well as basic research and development for HED and inertial confinement fusion (ICF) science. Examples include single-mode and multimode classical (non-stabilized) Rayleigh-Taylor (RT) experiments in planar geometry; classical RT in cylindrically convergent geometry; RT mixing into the hot spot at high compression in ICF capsule implosions; and ablation front RT experiments in direct drive; in indirect drive; and in nonlinear RT bubble merger regimes. Radiative shock stabilized RT instability experiments have also been developed; as well as material strength stabilized RT experiments at high pressures and strain rates in solid-state ductile metals. Examples will be given, connections to astrophysical and planetary science settings made, and future directions discussed. [1-13]

Acknowledgments: The experiments described were done in part through the NIF Discovery Science Program.

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Publication: [1] P. M. Celliers, Science 361, 677 (2018).<br>[2] R. F. Smith, Nat. Astron. 2, 452 (2018).<br>[3] A. Lazicki, Nature 589, 532 (2021).<br>[4] M. M. Gorman, Nature Physics, accepted (2022).<br>[5] T. Döppner, PRL 121, 025001 (2018).<br>[6] A. L. Kritcher, Nature 584, 51 (2020).<br>[7] C. M. Huntington, PoP 25, 052118 (2018).<br>[8] C. C. Kuranz, Nat. Com. 9, 1564 (2018). <br>[9] A. Casner, HEDP 17, 146 (2015).<br>[10] D. A. Martinez, PRL 114, 215004 (2015).<br>[11] G. J. Williams, PRE 101, 031201 (2020).<br>[12] W. Fox et al., PRL, submitted (2020).<br>[13] F. Fiuza, Nat. Phys. 16, 916 (2020).

Presenters

  • Bruce A Remington

    Lawrence Livermore National Laboratory, Lawrence Livermore Natl Lab

Authors

  • Bruce A Remington

    Lawrence Livermore National Laboratory, Lawrence Livermore Natl Lab