Observation of a Reflected Shock in an Indirectly Driven Spherical Implosion at the National Ignition Facility
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PhysRevLett.112.225002.pdf
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Author(s)
Le Pape, S.
Divol, L.
Berzak Hopkins, L. F.
Mackinnon, A. J.
Meezan, N. B.
Casey, Daniel Thomas
Herrmann, H.
McNaney, J.
Ma, T.
Widmann, K.
Date Issued
June 2014
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
Le Pape, S., L. Divol, L. Berzak Hopkins, A. Mackinnon, N. B. Meezan, D. Casey, J. Frenje, et al. “Observation of a Reflected Shock in an Indirectly Driven Spherical Implosion at the National Ignition Facility.” Physical Review Letters 112, no. 22 (June 2014). © 2014 American Physical Society
Version
Final published version
Abstract
A 200 μm radius hot spot at more than 2 keV temperature, 1 g/cm[superscript 3] density has been achieved on the National Ignition Facility using a near vacuum hohlraum. The implosion exhibits ideal one-dimensional behavior and 99% laser-to-hohlraum coupling. The low opacity of the remaining shell at bang time allows for a measurement of the x-ray emission of the reflected central shock in a deuterium plasma. Comparison with 1D hydrodynamic simulations puts constraints on electron-ion collisions and heat conduction. Results are consistent with classical (Spitzer-Harm) heat flux.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Plasma Science and Fusion Center
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DOI of Published Version
https://doi.org/10.1103/PhysRevLett.112.225002
