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Title: Flash Kα radiography of laser-driven solid sphere compression for fast ignition

Abstract

Time-resolved compression of a laser-driven solid deuterated plastic sphere with a cone was measured with flash Kα x-ray radiography. A spherically converging shockwave launched by nanosecond GEKKO XII beams was used for compression while a flash of 4.51 keV Ti Kα x-ray backlighter was produced by a high-intensity, picosecond laser LFEX (Laser for Fast ignition EXperiment) near peak compression for radiography. Areal densities of the compressed core were inferred from two-dimensional backlit x-ray images recorded with a narrow-band spherical crystal imager. The maximum areal density in the experiment was estimated to be 87 ± 26 mg/cm2. Lastly, the temporal evolution of the experimental and simulated areal densities with a 2-D radiation-hydrodynamics code is in good agreement.

Authors:
ORCiD logo [1];  [2];  [3];  [2];  [2];  [2];  [2]; ORCiD logo [2]; ORCiD logo [4];  [3];  [5];  [6];  [7];  [8]; ORCiD logo [2]
+ Show Author Affiliations
  1. Univ. of Nevada, Reno, NV (United States). Dept. of Physics
  2. Osaka Univ. (Japan). Inst. of Laser Engineering
  3. Tohoku Univ., Sendai (Japan). Dept. of Aerospace Engineering
  4. Inst. of Laser Technology, Nishi-ku, Osaka (Japan)
  5. Univ. of California, San Diego, CA (United States)
  6. Univ. of Rochester, NY (United States). Lab. for Laser Energetics
  7. Ecole Polytechnique, Palaiseau (France). Lab. pour l'Utilisation des Lasers Intenses (LULI)
  8. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1438787
Report Number(s):
LLNL-JRNL-687258
Journal ID: ISSN 0003-6951; TRN: US1900528
Grant/Contract Number:  
AC52-07NA27344
Resource Type:
Accepted Manuscript
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 108; Journal Issue: 25; Journal ID: ISSN 0003-6951
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION; 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY

Citation Formats

Sawada, H., Lee, S., Shiroto, T., Nagatomo, H., Arikawa, Y., Nishimura, H., Ueda, T., Shigemori, K., Sunahara, A., Ohnishi, N., Beg, F. N., Theobald, W., Perez, F., Patel, P. K., and Fujioka, S. Flash Kα radiography of laser-driven solid sphere compression for fast ignition. United States: N. p., 2016. Web. doi:10.1063/1.4954383.
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Sawada, H., Lee, S., Shiroto, T., Nagatomo, H., Arikawa, Y., Nishimura, H., Ueda, T., Shigemori, K., Sunahara, A., Ohnishi, N., Beg, F. N., Theobald, W., Perez, F., Patel, P. K., & Fujioka, S. Flash Kα radiography of laser-driven solid sphere compression for fast ignition. United States. https://doi.org/10.1063/1.4954383
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Sawada, H., Lee, S., Shiroto, T., Nagatomo, H., Arikawa, Y., Nishimura, H., Ueda, T., Shigemori, K., Sunahara, A., Ohnishi, N., Beg, F. N., Theobald, W., Perez, F., Patel, P. K., and Fujioka, S. Mon . "Flash Kα radiography of laser-driven solid sphere compression for fast ignition". United States. https://doi.org/10.1063/1.4954383. https://www.osti.gov/servlets/purl/1438787.
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@article{osti_1438787,
title = {Flash Kα radiography of laser-driven solid sphere compression for fast ignition},
author = {Sawada, H. and Lee, S. and Shiroto, T. and Nagatomo, H. and Arikawa, Y. and Nishimura, H. and Ueda, T. and Shigemori, K. and Sunahara, A. and Ohnishi, N. and Beg, F. N. and Theobald, W. and Perez, F. and Patel, P. K. and Fujioka, S.},
abstractNote = {Time-resolved compression of a laser-driven solid deuterated plastic sphere with a cone was measured with flash Kα x-ray radiography. A spherically converging shockwave launched by nanosecond GEKKO XII beams was used for compression while a flash of 4.51 keV Ti Kα x-ray backlighter was produced by a high-intensity, picosecond laser LFEX (Laser for Fast ignition EXperiment) near peak compression for radiography. Areal densities of the compressed core were inferred from two-dimensional backlit x-ray images recorded with a narrow-band spherical crystal imager. The maximum areal density in the experiment was estimated to be 87 ± 26 mg/cm2. Lastly, the temporal evolution of the experimental and simulated areal densities with a 2-D radiation-hydrodynamics code is in good agreement.},
doi = {10.1063/1.4954383},
journal = {Applied Physics Letters},
number = 25,
volume = 108,
place = {United States},
year = {Mon Jun 20 00:00:00 EDT 2016},
month = {Mon Jun 20 00:00:00 EDT 2016}
}
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Publisher's Version of Record
https://doi.org/10.1063/1.4954383
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Cited by: 20 works
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Figures / Tables:

Figure 1 Figure 1: (a) A model view of the cone-sphere target from the x-ray streak camera and its slit orientation. (b) A measured x-ray streak image (s38989). (c) Space-averaged emission profiles from the Au cone and the LFEX hard x-ray. The open and filled bars at the bottom of the streakmore » image indicate the width of the averaged spatial extents.« less
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    Works referencing / citing this record:

    Magnetized fast isochoric laser heating for efficient creation of ultra-high-energy-density states
    journal, September 2018

    Development of broadband x-ray radiography for diagnosing magnetically driven cylindrically compressed matter
    journal, August 2019

    • Sawada, H.; Daykin, T. S.; Hutchinson, T. M.
    • Physics of Plasmas, Vol. 26, Issue 8
    • DOI: 10.1063/1.5100173

    Peta-Pascal Pressure Driven by Fast Isochoric Heating with Multi-Picosecond Intense Laser Pulse
    text, January 2019

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