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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/cm{sup 2}. The temporal evolution of the experimental and simulated areal densities with a 2-D radiation-hydrodynamics code is in good agreement.

Authors:
 [1]; ; ; ; ; ; ;  [2]; ;  [3];  [4];  [5];  [6];  [7];  [8]
  1. Department of Physics, University of Nevada Reno, Reno, Nevada 89557 (United States)
  2. Institute of Laser Engineering, Osaka University, Suita, Osaka (Japan)
  3. Department of Aerospace Engineering, Tohoku University, Sendai, Miyagi (Japan)
  4. Institute of Laser Technology, Nishi-ku, Osaka (Japan)
  5. University of California San Diego, La Jolla, California 92093 (United States)
  6. Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623 (United States)
  7. LULI, Ecole Polytechnique, Palaiseau, Cedex (France)
  8. Lawrence Livermore National Laboratory, Livermore, California 94550 (United States)
Publication Date:
OSTI Identifier:
22590833
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 108; Journal Issue: 25; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; COMPRESSION; DENSITY; LASERS; MAGNESIUM 26; SPHERICAL CONFIGURATION; THERMONUCLEAR IGNITION; TWO-DIMENSIONAL SYSTEMS; X RADIATION; X-RAY RADIOGRAPHY

Citation Formats

Sawada, H., Lee, S., Nagatomo, H., Arikawa, Y., Nishimura, H., Ueda, T., Shigemori, K., Fujioka, S., Shiroto, T., Ohnishi, N., Sunahara, A., Beg, F. N., Theobald, W., Pérez, F., and Patel, P. K.. Flash Kα radiography of laser-driven solid sphere compression for fast ignition. United States: N. p., 2016. Web. doi:10.1063/1.4954383.
Sawada, H., Lee, S., Nagatomo, H., Arikawa, Y., Nishimura, H., Ueda, T., Shigemori, K., Fujioka, S., Shiroto, T., Ohnishi, N., Sunahara, A., Beg, F. N., Theobald, W., Pérez, F., & Patel, P. K.. Flash Kα radiography of laser-driven solid sphere compression for fast ignition. United States. doi:10.1063/1.4954383.
Sawada, H., Lee, S., Nagatomo, H., Arikawa, Y., Nishimura, H., Ueda, T., Shigemori, K., Fujioka, S., Shiroto, T., Ohnishi, N., Sunahara, A., Beg, F. N., Theobald, W., Pérez, F., and Patel, P. K.. Mon . "Flash Kα radiography of laser-driven solid sphere compression for fast ignition". United States. doi:10.1063/1.4954383.
@article{osti_22590833,
title = {Flash Kα radiography of laser-driven solid sphere compression for fast ignition},
author = {Sawada, H. and Lee, S. and Nagatomo, H. and Arikawa, Y. and Nishimura, H. and Ueda, T. and Shigemori, K. and Fujioka, S. and Shiroto, T. and Ohnishi, N. and Sunahara, A. and Beg, F. N. and Theobald, W. and Pérez, F. and Patel, P. K.},
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/cm{sup 2}. 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}
}