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

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.

doi:10.1063/1.4954383

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

Journal Article · Mon Jun 20 00:00:00 EDT 2016 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4954383· OSTI ID:1438787

^[1]; Lee, S. ^[2]; Shiroto, T. ^[3]; Nagatomo, H. ^[2]; Arikawa, Y. ^[2]; Nishimura, H. ^[2]; Ueda, T. ^[2]; ^[2]; ^[4]; Ohnishi, N. ^[3]; Beg, F. N. ^[5]; Theobald, W. ^[6]; Perez, F. ^[7]; Patel, P. K. ^[8]; ^[2]

Univ. of Nevada, Reno, NV (United States). Dept. of Physics
Osaka Univ. (Japan). Inst. of Laser Engineering
Tohoku Univ., Sendai (Japan). Dept. of Aerospace Engineering
Inst. of Laser Technology, Nishi-ku, Osaka (Japan)
Univ. of California, San Diego, CA (United States)
Univ. of Rochester, NY (United States). Lab. for Laser Energetics
Ecole Polytechnique, Palaiseau (France). Lab. pour l'Utilisation des Lasers Intenses (LULI)
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

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.

View Accepted Manuscript (DOE)

Research Organization:: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: AC52-07NA27344

OSTI ID:: 1438787

Report Number(s):: LLNL-JRNL--687258

Journal Information:: Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 25 Vol. 108; ISSN 0003-6951

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

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