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Title: Rayleigh–Taylor instabilities in high-energy density settings on the National Ignition Facility

Abstract

Here, the Rayleigh–Taylor (RT) instability occurs at an interface between two fluids of differing density during an acceleration. These instabilities can occur in very diverse settings, from inertial confinement fusion (ICF) implosions over spatial scales of ~10 –3 – 10 –1 cm (10–1,000 μm) to supernova explosions at spatial scales of ~10 12 cm and larger. We describe experiments and techniques for reducing (“stabilizing”) RT growth in high-energy density (HED) settings on the National Ignition Facility (NIF) at Lawrence Livermore National Laboratory. Three unique regimes of stabilization are described: ( i) at an ablation front, ( ii) behind a radiative shock, and ( iii) due to material strength. For comparison, we also show results from nonstabilized “classical” RT instability evolution in HED regimes on the NIF. Examples from experiments on the NIF in each regime are given. These phenomena also occur in several astrophysical scenarios and planetary science.

Authors:
 [1];  [1];  [1];  [1];  [1];  [1];  [2];  [1];  [1];  [1];  [1]
  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  2. Univ. of Michigan, Ann Arbor, MI (United States)
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1479084
Report Number(s):
LLNL-JRNL-739404
Journal ID: ISSN 0027-8424; 892925
Grant/Contract Number:  
AC52-07NA27344
Resource Type:
Accepted Manuscript
Journal Name:
Proceedings of the National Academy of Sciences of the United States of America
Additional Journal Information:
Journal Name: Proceedings of the National Academy of Sciences of the United States of America; Journal ID: ISSN 0027-8424
Publisher:
National Academy of Sciences, Washington, DC (United States)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; Rayleigh–Taylor instability; high-energy density experiments; National Ignition Facility

Citation Formats

Remington, Bruce A., Park, Hye -Sook, Casey, Daniel T., Cavallo, Robert M., Clark, Daniel S., Huntington, Channing M., Kuranz, Carolyn C., Miles, Aaron R., Nagel, Sabrina R., Raman, Kumar S., and Smalyuk, Vladimir A. Rayleigh–Taylor instabilities in high-energy density settings on the National Ignition Facility. United States: N. p., 2018. Web. doi:10.1073/pnas.1717236115.
Remington, Bruce A., Park, Hye -Sook, Casey, Daniel T., Cavallo, Robert M., Clark, Daniel S., Huntington, Channing M., Kuranz, Carolyn C., Miles, Aaron R., Nagel, Sabrina R., Raman, Kumar S., & Smalyuk, Vladimir A. Rayleigh–Taylor instabilities in high-energy density settings on the National Ignition Facility. United States. doi:10.1073/pnas.1717236115.
Remington, Bruce A., Park, Hye -Sook, Casey, Daniel T., Cavallo, Robert M., Clark, Daniel S., Huntington, Channing M., Kuranz, Carolyn C., Miles, Aaron R., Nagel, Sabrina R., Raman, Kumar S., and Smalyuk, Vladimir A. Tue . "Rayleigh–Taylor instabilities in high-energy density settings on the National Ignition Facility". United States. doi:10.1073/pnas.1717236115. https://www.osti.gov/servlets/purl/1479084.
@article{osti_1479084,
title = {Rayleigh–Taylor instabilities in high-energy density settings on the National Ignition Facility},
author = {Remington, Bruce A. and Park, Hye -Sook and Casey, Daniel T. and Cavallo, Robert M. and Clark, Daniel S. and Huntington, Channing M. and Kuranz, Carolyn C. and Miles, Aaron R. and Nagel, Sabrina R. and Raman, Kumar S. and Smalyuk, Vladimir A.},
abstractNote = {Here, the Rayleigh–Taylor (RT) instability occurs at an interface between two fluids of differing density during an acceleration. These instabilities can occur in very diverse settings, from inertial confinement fusion (ICF) implosions over spatial scales of ~10–3 – 10–1 cm (10–1,000 μm) to supernova explosions at spatial scales of ~1012 cm and larger. We describe experiments and techniques for reducing (“stabilizing”) RT growth in high-energy density (HED) settings on the National Ignition Facility (NIF) at Lawrence Livermore National Laboratory. Three unique regimes of stabilization are described: (i) at an ablation front, (ii) behind a radiative shock, and (iii) due to material strength. For comparison, we also show results from nonstabilized “classical” RT instability evolution in HED regimes on the NIF. Examples from experiments on the NIF in each regime are given. These phenomena also occur in several astrophysical scenarios and planetary science.},
doi = {10.1073/pnas.1717236115},
journal = {Proceedings of the National Academy of Sciences of the United States of America},
number = ,
volume = ,
place = {United States},
year = {2018},
month = {6}
}

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