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Walsh CA, Chittenden JP, McGlinchey K, et al. Self-Generated Magnetic Fields in the Stagnation Phase of Indirect-Drive Implosions on the National Ignition Facility. Phys Rev Lett. 2017;118(15):155001doi: 10.1103/PhysRevLett.118.155001.
Walsh, C. A., Chittenden, J. P., McGlinchey, K., Niasse, N. P. L., & Appelbe, B. D. (2017). Self-Generated Magnetic Fields in the Stagnation Phase of Indirect-Drive Implosions on the National Ignition Facility. Physical review letters, 118(15), 155001. https://doi.org/10.1103/PhysRevLett.118.155001
Walsh, C A, et al. "Self-Generated Magnetic Fields in the Stagnation Phase of Indirect-Drive Implosions on the National Ignition Facility." Physical review letters vol. 118,15 (2017): 155001. doi: https://doi.org/10.1103/PhysRevLett.118.155001
Walsh CA, Chittenden JP, McGlinchey K, Niasse NPL, Appelbe BD. Self-Generated Magnetic Fields in the Stagnation Phase of Indirect-Drive Implosions on the National Ignition Facility. Phys Rev Lett. 2017 Apr 14;118(15):155001. doi: 10.1103/PhysRevLett.118.155001. Epub 2017 Apr 10. PMID: 28452551.
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Phys Rev Lett. 2017 Apr 14;118(15):155001. doi: 10.1103/PhysRevLett.118.155001. Epub 2017 Apr 10.

Self-Generated Magnetic Fields in the Stagnation Phase of Indirect-Drive Implosions on the National Ignition Facility.

Physical review letters

C A Walsh, J P Chittenden, K McGlinchey, N P L Niasse, B D Appelbe

Affiliations

  1. Blackett Laboratory, Imperial College, London SW7 2AZ, United Kingdom.

PMID: 28452551 DOI: 10.1103/PhysRevLett.118.155001

Abstract

Three-dimensional extended-magnetohydrodynamic simulations of the stagnation phase of inertial confinement fusion implosion experiments at the National Ignition Facility are presented, showing self-generated magnetic fields over 10^{4}  T. Angular high mode-number perturbations develop large magnetic fields, but are localized to the cold, dense hot-spot surface, which is hard to magnetize. When low-mode perturbations are also present, the magnetic fields are injected into the hot core, reaching significant magnetizations, with peak local thermal conductivity reductions greater than 90%. However, Righi-Leduc heat transport effectively cools the hot spot and lowers the neutron spectra-inferred ion temperatures compared to the unmagnetized case. The Nernst effect qualitatively changes the results by demagnetizing the hot-spot core, while increasing magnetizations at the edge and near regions of large heat loss.

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