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

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

doi:10.1103/PhysRevLett.114.215003

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

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

Research output: Contribution to journal › Article › peer-review

70 Scopus citations

Abstract

The magnetic fields generated at the surface of a laser-irradiated planar solid target are mapped using ultrafast proton radiography. Thick (50μm) plastic foils are irradiated with 4-kJ, 2.5-ns laser pulses focused to an intensity of 4×1014W/cm2. 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.

Original language	English (US)
Article number	215003
Journal	Physical review letters
Volume	114
Issue number	21
DOIs	https://doi.org/10.1103/PhysRevLett.114.215003
State	Published - May 29 2015
Externally published	Yes

All Science Journal Classification (ASJC) codes

General Physics and Astronomy

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10.1103/PhysRevLett.114.215003

Cite this

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

abstract = "The magnetic fields generated at the surface of a laser-irradiated planar solid target are mapped using ultrafast proton radiography. Thick (50μm) plastic foils are irradiated with 4-kJ, 2.5-ns laser pulses focused to an intensity of 4×1014W/cm2. 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.",

author = "L. Gao and Nilson, \{P. M.\} and Igumenshchev, \{I. V.\} and Haines, \{M. G.\} and Froula, \{D. H.\} and R. Betti and Meyerhofer, \{D. D.\}",

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doi = "10.1103/PhysRevLett.114.215003",

language = "English (US)",

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TY - JOUR

T1 - Precision mapping of laser-driven magnetic fields and their evolution in high-energy-density plasmas

AU - Gao, L.

AU - Nilson, P. M.

AU - Igumenshchev, I. V.

AU - Haines, M. G.

AU - Froula, D. H.

AU - Betti, R.

AU - Meyerhofer, D. D.

PY - 2015/5/29

Y1 - 2015/5/29

N2 - The magnetic fields generated at the surface of a laser-irradiated planar solid target are mapped using ultrafast proton radiography. Thick (50μm) plastic foils are irradiated with 4-kJ, 2.5-ns laser pulses focused to an intensity of 4×1014W/cm2. 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.

AB - The magnetic fields generated at the surface of a laser-irradiated planar solid target are mapped using ultrafast proton radiography. Thick (50μm) plastic foils are irradiated with 4-kJ, 2.5-ns laser pulses focused to an intensity of 4×1014W/cm2. 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.

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DO - 10.1103/PhysRevLett.114.215003

M3 - Article

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

Abstract

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