期刊
PHYSICAL REVIEW LETTERS
卷 118, 期 15, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.118.155001
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资金
- Engineering and Physical Sciences Research Council [EP/K028464/1, EP/L000237/1]
- AWE Aldermaston
- Engineering and Physical Sciences Research Council [EP/L000237/1, EP/K028464/1, 1378518, EP/M01102X/1] Funding Source: researchfish
- EPSRC [EP/K028464/1, EP/L000237/1, EP/M01102X/1] Funding Source: UKRI
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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