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Title: Multimode instability evolution driven by strong, high-energy-density shocks in a rarefaction-reflected geometry

Abstract

Here, we present an experiment using lasers to produce a shock pressure of >10 Mbar, which we then use to drive Richtmyer–Meshkov and Rayleigh–Taylor growth at a 2D multimode perturbed interface. Key features of this platform are that we can precisely reproduce the perturbation from iteration to iteration of the experiment, facilitating analysis, and that the lasers allow us to produce very strong shocks, creating a plasma state in the system. We also implement a Bayesian technique to analyze the multimode spectra. This technique enables us to draw quantitative conclusions about the spectrum, even in the presence of significant noise. For instance, we measure the signal contained in the seeded modes over time, as well as the transition of the initial growth rate of these modes into the overall saturation behavior of the spectrum.

Authors:
ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [1]; ORCiD logo [1];  [3]; ORCiD logo [1]; ORCiD logo [1]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  2. Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Univ. of Michigan, Ann Arbor, MI (United States)
  3. Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Lockheed-Martin, Syracuse, NY (United States)
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1361844
Alternate Identifier(s):
OSTI ID: 1421175; OSTI ID: 1484631
Report Number(s):
LA-UR-17-20581
Journal ID: ISSN 1070-664X
Grant/Contract Number:  
89233218CNA000001; AC52-06NA25396
Resource Type:
Journal Article: Published Article
Journal Name:
Physics of Plasmas
Additional Journal Information:
Journal Volume: 24; Journal Issue: 5; Journal ID: ISSN 1070-664X
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY

Citation Formats

Di Stefano, Carlos A., Rasmus, Alexander Martin, Doss, Forrest William, Flippo, Kirk Adler, Hager, Jon D., Kline, John L., and Bradley, P. A.. Multimode instability evolution driven by strong, high-energy-density shocks in a rarefaction-reflected geometry. United States: N. p., 2017. Web. doi:10.1063/1.4981924.
Di Stefano, Carlos A., Rasmus, Alexander Martin, Doss, Forrest William, Flippo, Kirk Adler, Hager, Jon D., Kline, John L., & Bradley, P. A.. Multimode instability evolution driven by strong, high-energy-density shocks in a rarefaction-reflected geometry. United States. doi:10.1063/1.4981924.
Di Stefano, Carlos A., Rasmus, Alexander Martin, Doss, Forrest William, Flippo, Kirk Adler, Hager, Jon D., Kline, John L., and Bradley, P. A.. Mon . "Multimode instability evolution driven by strong, high-energy-density shocks in a rarefaction-reflected geometry". United States. doi:10.1063/1.4981924.
@article{osti_1361844,
title = {Multimode instability evolution driven by strong, high-energy-density shocks in a rarefaction-reflected geometry},
author = {Di Stefano, Carlos A. and Rasmus, Alexander Martin and Doss, Forrest William and Flippo, Kirk Adler and Hager, Jon D. and Kline, John L. and Bradley, P. A.},
abstractNote = {Here, we present an experiment using lasers to produce a shock pressure of >10 Mbar, which we then use to drive Richtmyer–Meshkov and Rayleigh–Taylor growth at a 2D multimode perturbed interface. Key features of this platform are that we can precisely reproduce the perturbation from iteration to iteration of the experiment, facilitating analysis, and that the lasers allow us to produce very strong shocks, creating a plasma state in the system. We also implement a Bayesian technique to analyze the multimode spectra. This technique enables us to draw quantitative conclusions about the spectrum, even in the presence of significant noise. For instance, we measure the signal contained in the seeded modes over time, as well as the transition of the initial growth rate of these modes into the overall saturation behavior of the spectrum.},
doi = {10.1063/1.4981924},
journal = {Physics of Plasmas},
number = 5,
volume = 24,
place = {United States},
year = {Mon Apr 24 00:00:00 EDT 2017},
month = {Mon Apr 24 00:00:00 EDT 2017}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1063/1.4981924

Citation Metrics:
Cited by: 3 works
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