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Precision mapping of laser-driven magnetic fields and their evolution in high-energy-density plasmas

Gao, L ; Nilson, P M ; Igumenshchev, I V ; Haines, M G ; Froula, D H ; Betti, R ; Meyerhofer, D D

Physical review letters, 2015-05, Vol.114 (21), p.215003-215003, Article 215003 [Periódico revisado por pares]

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Título:
Precision mapping of laser-driven magnetic fields and their evolution in high-energy-density plasmas
Autor: Gao, L ; Nilson, P M ; Igumenshchev, I V ; Haines, M G ; Froula, D H ; Betti, R ; Meyerhofer, D D
Assuntos: 70 PLASMA PHYSICS AND FUSION TECHNOLOGY ; Battery ; Fluid dynamics ; Fluid flow ; Foils ; Heat transfer ; Magnetic fields ; Plasmas ; Radiography
É parte de: Physical review letters, 2015-05, Vol.114 (21), p.215003-215003, Article 215003
Notas: ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
NA0001944
USDOE
Descrição: The magnetic fields generated at the surface of a laser-irradiated planar solid target are mapped using ultrafast proton radiography. Thick (50 μm) plastic foils are irradiated with 4-kJ, 2.5-ns laser pulses focused to an intensity of 4×10^{14} W/cm^{2}. The data show magnetic fields concentrated at the edge of the laser-focal region, well within the expanding coronal plasma. The magnetic-field spatial distribution is tracked and shows good agreement with 2D resistive magnetohydrodynamic simulations using the code draco when the Biermann battery source, fluid and Nernst advection, resistive magnetic diffusion, and Righi-Leduc heat flow are included.
Editor: United States: American Physical Society (APS)
Idioma: Inglês

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