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Title: Impact of ablator thickness and laser drive duration on a platform for supersonic, shockwave-driven hydrodynamic instability experiments

Abstract

Here, we discuss changes to a target design that improved the quality and consistency of data obtained through a novel experimental platform that enables the study of hydrodynamic instabilities in a compressible regime. The experiment uses a laser to drive steady, supersonic shockwave over well-characterized initial perturbations. Early experiments were adversely affected by inadequate experimental timescales and, potentially, an unintended secondary shockwave. These issues were addressed by extending the 4 x 10 13 W/cm 2 laser pulse from 19 ns to 28 ns, and increasing the ablator thickness from 185 µm to 500 µm. We present data demonstrating the performance of the platform.

Authors:
ORCiD logo [1];  [2]; ORCiD logo [3]; ORCiD logo [4];  [1];  [1]; ORCiD logo [1];  [5];  [1];  [1]
  1. Univ. of Michigan, Ann Arbor, MI (United States)
  2. Univ. of Michigan, Ann Arbor, MI (United States); Nuclear Research Center - Negev (Israel)
  3. Nuclear Research Center - Negev (Israel); Ben Gurion Univ. of the Negev (Israel)
  4. Univ. of Michigan, Ann Arbor, MI (United States); Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  5. Univ. of Michigan, Ann Arbor, MI (United States); Nuclear Research Center - Negev (Israel); Ben Gurion Univ. of the Negev (Israel)
Publication Date:
Research Org.:
Univ. of Michigan, Ann Arbor, MI (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1444112
Alternate Identifier(s):
OSTI ID: 1419545
Grant/Contract Number:  
NA0002956; NA0002719; NA0001944; B614207 to DE-AC52-07NA27344
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
High Energy Density Physics
Additional Journal Information:
Journal Volume: 22; Journal Issue: C; Journal ID: ISSN 1574-1818
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; Hydrodynamic instabilities; Supersonic; Compressible; Reshock; Kelvin–Helmholtz

Citation Formats

Wan, W. C., Malamud, Guy, Shimony, A., Di Stefano, C. A., Trantham, M. R., Klein, S. R., Soltis, J. D., Shvarts, D., Drake, R. P., and Kuranz, C. C. Impact of ablator thickness and laser drive duration on a platform for supersonic, shockwave-driven hydrodynamic instability experiments. United States: N. p., 2016. Web. doi:10.1016/j.hedp.2016.12.001.
Wan, W. C., Malamud, Guy, Shimony, A., Di Stefano, C. A., Trantham, M. R., Klein, S. R., Soltis, J. D., Shvarts, D., Drake, R. P., & Kuranz, C. C. Impact of ablator thickness and laser drive duration on a platform for supersonic, shockwave-driven hydrodynamic instability experiments. United States. doi:10.1016/j.hedp.2016.12.001.
Wan, W. C., Malamud, Guy, Shimony, A., Di Stefano, C. A., Trantham, M. R., Klein, S. R., Soltis, J. D., Shvarts, D., Drake, R. P., and Kuranz, C. C. Wed . "Impact of ablator thickness and laser drive duration on a platform for supersonic, shockwave-driven hydrodynamic instability experiments". United States. doi:10.1016/j.hedp.2016.12.001. https://www.osti.gov/servlets/purl/1444112.
@article{osti_1444112,
title = {Impact of ablator thickness and laser drive duration on a platform for supersonic, shockwave-driven hydrodynamic instability experiments},
author = {Wan, W. C. and Malamud, Guy and Shimony, A. and Di Stefano, C. A. and Trantham, M. R. and Klein, S. R. and Soltis, J. D. and Shvarts, D. and Drake, R. P. and Kuranz, C. C.},
abstractNote = {Here, we discuss changes to a target design that improved the quality and consistency of data obtained through a novel experimental platform that enables the study of hydrodynamic instabilities in a compressible regime. The experiment uses a laser to drive steady, supersonic shockwave over well-characterized initial perturbations. Early experiments were adversely affected by inadequate experimental timescales and, potentially, an unintended secondary shockwave. These issues were addressed by extending the 4 x 1013 W/cm2 laser pulse from 19 ns to 28 ns, and increasing the ablator thickness from 185 µm to 500 µm. We present data demonstrating the performance of the platform.},
doi = {10.1016/j.hedp.2016.12.001},
journal = {High Energy Density Physics},
number = C,
volume = 22,
place = {United States},
year = {Wed Dec 07 00:00:00 EST 2016},
month = {Wed Dec 07 00:00:00 EST 2016}
}

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