Bulletin of the American Physical Society
60th Annual Meeting of the APS Division of Plasma Physics
Volume 63, Number 11
Monday–Friday, November 5–9, 2018; Portland, Oregon
Session JO4: Analytical and Computational Techniques in Inertial Confinement Fusion
2:00 PM–4:36 PM,
Tuesday, November 6, 2018
OCC
Room: B110-112
Chair: Chuang Ren, University of Rochester
Abstract ID: BAPS.2018.DPP.JO4.3
Abstract: JO4.00003 : Kinetic simulations of the thermomagnetic instability in inertial fusion conditions*
2:24 PM–2:36 PM
Presenter:
Mark Sherlock
(Lawrence Livermore Natl Lab)
Author:
Mark Sherlock
(Lawrence Livermore Natl Lab)
In laser-fusion conditions, the heat transport is well known to be reduced relative to theoretical predictions. Theoretical work over the last 4 decades has increased our understanding of the role of non-local effects in explaining the reduced heat flow, but a multiplier-free simulation capability remains elusive. A number of magnetic-field generating instabilities have long been suspected of playing a role in thermal transport in laboratory and astrophysical contexts, including the thermomagnetic instabilities [1]. We discuss the role of various transport instabilities in laser-plasmas and present the first 2D Vlaso-Fokker-Planck simulations of the thermomagnetic instability, highlighting the growth and saturation of the magnetic field, its effect on the heat flow in non-local conditions, and the formation of filamentary structures which disrupt symmetry.
[1] D.A.Tidman & R.A.Shanny, Field-generating thermal instability in laser-heated plasmas, Phys. Fluids 17, 1207 (1974).
*This work was performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under Contract DE-AC52-07NA27344. Release LLNL-ABS-753457.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2018.DPP.JO4.3
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