Matter and Radiation at Extremes, Volume. 6, Issue 6, 065901(2021)
Advanced analysis of laser-driven pulsed magnetic diffusion based on quantum molecular dynamics simulation
Fig. 1. Laser intensity scaling of hot-electron temperature.
Fig. 2. Calculation geometry and initial condition of the cylindrical simulation. The ring-shaped coil (nickel) was modeled with a coil radius of 250
Fig. 3. Temporal evolution of (a) self-consistent voltage and current and (b) coil resistance. The coil current increases slowly, reaching a maximum at 4.2 ns. The coil resistance changes dramatically until 4.2 ns.
Fig. 4. Temperature dependence of the electrical conductivity of solid dense gold. For
Fig. 5. Temporal evolution of the incident laser pulse (dashed black line), the magnetic field generated in vacuum (solid blue line), and the magnetic field that penetrated the gold cone with a previously reported
Fig. 6. Spatial distributions of (a) temperature and (b) magnetic field at 5.2 ns. The cone wall heats up to several tens of electron volts owing to induction heating, and the electrical conductivity drops by an order of magnitude. This conductivity drop leads to rapid diffusion, and thus the applied magnetic field penetrates the cone wall at this time.
Fig. 7. Line-outs of the magnetic field strength at 5.2 ns on the
Fig. 8. Simple illustration of magnetic diffusion. An infinitely wide conductive plate of thickness
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Hiroki Morita, Tadashi Ogitsu, Frank R. Graziani, Shinsuke Fujioka. Advanced analysis of laser-driven pulsed magnetic diffusion based on quantum molecular dynamics simulation[J]. Matter and Radiation at Extremes, 2021, 6(6): 065901
Category: Inertial Confinement Fusion Physics
Received: Apr. 9, 2021
Accepted: Aug. 7, 2021
Published Online: Dec. 7, 2021
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