Laboratory evidence of dynamo amplification of magnetic fields in a turbulent plasma

Tzeferacos, P.; Rigby, A.; Bott, A. F.  A.; Bell, A. R.; Bingham, R.; Casner, A.; Cattaneo, F.; Churazov, E. M.; Emig, J.; Fiuza, F.; Forest, C. B.; Foster, J.; Graziani, C.; Katz, J.; Koenig, M.; Li, C. -K.; Meinecke, J.; Petrasso, R.; Park, H. -S.; Remington, B. A.; Ross, J. S.; Ryu, D.; Ryutov, D.; White, T. G.; Reville, B.; Miniati, F.; Schekochihin, A. A.; Lamb, D. Q.; Froula, D. H.; Gregori, G.

doi:10.1038/s41467-018-02953-2

Title: Laboratory evidence of dynamo amplification of magnetic fields in a turbulent plasma

Journal Article · 09 February 2018 · Nature Communications

DOI: https://doi.org/10.1038/s41467-018-02953-2 · OSTI ID:1423569

Tzeferacos, P. ^[1];

^[2]; Bott, A. F. A. ^[2]; Bell, A. R. ^[2]; Bingham, R. ^[3]; Casner, A. ^[4]; Cattaneo, F. ^[5]; Churazov, E. M. ^[6]; Emig, J. ^[7]; Fiuza, F. ^[8]; Forest, C. B. ^[9]; Foster, J. ^[10]; Graziani, C. ^[5]; Katz, J. ^[11]; Koenig, M. ^[12]; Li, C. -K. ^[13]; Meinecke, J. ^[2]; Petrasso, R. ^[13]; Park, H. -S. ^[7]; Remington, B. A. ^[7] more »

Univ. of Oxford (United Kingdom). Dept. of Physics; Univ. of Chicago, IL (United States). Dept. of Astronomy and Astrophysics
Univ. of Oxford (United Kingdom). Dept. of Physics
Science and Technology Facilities Council (STFC), Oxford (United Kingdom). Rutherford Appleton Lab. (RAL); Univ. of Strathclyde, Glasgow (United Kingdom). Dept. of Physics
Alternative Energies and Atomic Energy Commission (CEA), Arpajon (France). Dept. of the Military Applications (DAM)
Univ. of Chicago, IL (United States). Dept. of Astronomy and Astrophysics
Max Planck Inst. for Astrophysics, Garching (Germany)
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Univ. of Wisconsin, Madison, WI (United States). Physics Dept.
AWE, Aldermaston, Reading, West Berkshire (United Kingdom)
Univ. of Rochester, NY (United States). Lab. for Laser Energetics
Ecole Polytechnique, Palaiseau (France). Laboratoire pour l'Utilisation des Lasers Intenses (LULI)
Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
Ulsan National Inst. of Science and Technology (UNIST), Ulsan (Korea). Dept. of Physics
Queens Univ., Belfast (United Kingdom). School of Mathematics and Physics
Federal Inst. of Technology, Zurich (Switzerland). Dept. of Physics

Magnetic fields are ubiquitous in the Universe. The energy density of these fields is typically comparable to the energy density of the fluid motions of the plasma in which they are embedded, making magnetic fields essential players in the dynamics of the luminous matter. The standard theoretical model for the origin of these strong magnetic fields is through the amplification of tiny seed fields via turbulent dynamo to the level consistent with current observations. However, experimental demonstration of the turbulent dynamo mechanism has remained elusive, since it requires plasma conditions that are extremely hard to re-create in terrestrial laboratories. Here in this paper, we demonstrate, using laser-produced colliding plasma flows, that turbulence is indeed capable of rapidly amplifying seed fields to near equipartition with the turbulent fluid motions. These results support the notion that turbulent dynamo is a viable mechanism responsible for the observed present-day magnetization.

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Research Organization:: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States); SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States); Univ. of Chicago, IL (United States)

Sponsoring Organization:: European Union (EU); National Science Foundation (NSF); USDOE National Nuclear Security Administration (NNSA)

Grant/Contract Number:: AC02-06CH11357; AC02-76SF00515; AC52-07NA27344; NA0001944; NA0002724; NA0003539; SC0016566

OSTI ID:: 1423569

Report Number(s):: LLNL-JRNL--740393; PII: 2953

Journal Information:: Nature Communications, Journal Name: Nature Communications Journal Issue: 1 Vol. 9; ISSN 2041-1723

Publisher:: Nature Publishing GroupCopyright Statement

Country of Publication:: United States

Language:: English

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Self-similar energetics in large clusters of galaxies Miniati, Francesco; Beresnyak, Andrey arXiv https://doi.org/10.48550/arxiv.1507.01940	text	January 2015
Inferring Morphology and Strength of Magnetic Fields From Proton Radiographs Graziani, Carlo; Tzeferacos, Petros; Lamb, Donald Q. arXiv https://doi.org/10.48550/arxiv.1603.08617	text	January 2016
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Analytical Estimates of Proton Acceleration in Laser-produced Turbulent Plasmas Beyer, Konstantin Cranfield Online Research Data (CORD) https://doi.org/10.17862/cranfield.rd.7378052.v1	image	January 2018
Magnetohydrodynamical Effects on Nuclear Deflagration Fronts in Type Ia Supernovae Hristov, Boyan; Collins, David C.; Hoeflich, Peter The Astrophysical Journal, Vol. 858, Issue 1 https://doi.org/10.3847/1538-4357/aab7f2	journal	April 2018
3D Simulations and MLT. I. Renzini’s Critique Arnett, W. David; Meakin, Casey; Hirschi, Raphael The Astrophysical Journal, Vol. 882, Issue 1 https://doi.org/10.3847/1538-4357/ab21d9	journal	August 2019
Magneto-Hydrodynamical Effects on Nuclear Deflagration Fronts in Type Ia Supernovae Hristov, Boyan; Collins, David C.; Hoeflich, Peter arXiv https://doi.org/10.48550/arxiv.1711.11103	text	January 2017
3D Simulations and MLT: I. Renzini's Critique Arnett, W. David; Meakin, Casey; Hirschi, Raphael arXiv https://doi.org/10.48550/arxiv.1810.04653	text	January 2018
Characterizing filamentary magnetic structures in counter-streaming plasmas by Fourier analysis of proton images Levesque, Joseph; Kuranz, Carolyn; Handy, Timothy arXiv https://doi.org/10.48550/arxiv.1910.04070	text	January 2019

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