Impeding Hohlraum Plasma Stagnation in Inertial-Confinement Fusion
Name
Li-2012-Impeding Hohlraum Plasma Stagnation in Inertial-Confinement Fusion.pdf
Size
1.45 MB
Format
Adobe PDF
Checksum (MD5)
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Author(s)
Li, C. K.
Seguin, Fredrick Hampton
Frenje, Johan A.
Rosenberg, Michael Jonathan
Rinderknecht, Hans George
Zylstra, Alex Bennett
Petrasso, Richard D.
Amendt, P. A.
Landen, O. L.
Mackinnon, A. J.
Date Issued
January 2012
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
Li, C. et al. “Impeding Hohlraum Plasma Stagnation in Inertial-Confinement Fusion.” Physical Review Letters 108.2 (2012). © 2012 American Physical Society
Version
Final published version
Abstract
This Letter reports the first time-gated proton radiography of the spatial structure and temporal evolution of how the fill gas compresses the wall blowoff, inhibits plasma jet formation, and impedes plasma stagnation in the hohlraum interior. The potential roles of spontaneously generated electric and magnetic fields in the hohlraum dynamics and capsule implosion are discussed. It is shown that interpenetration of the two materials could result from the classical Rayleigh-Taylor instability occurring as the lighter, decelerating ionized fill gas pushes against the heavier, expanding gold wall blowoff. This experiment showed new observations of the effects of the fill gas on x-ray driven implosions, and an improved understanding of these results could impact the ongoing ignition experiments at the National Ignition Facility.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Plasma Science and Fusion Center
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1103/PhysRevLett.108.025001
