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

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

doi:10.1038/s41467-018-02953-2

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

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

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Abstract

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 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.

Original language	English
Pages (from-to)	591
Journal	Nature Communications
Volume	9
DOIs	https://doi.org/10.1038/s41467-018-02953-2
Publication status	Published - 09 Feb 2018
Externally published	Yes

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Laboratory evidence of dynamo amplification of magnetic fields in a turbulent plasma
Copyright 2018 the authors. This is an open access article published under a Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium, provided the author and source are cited.
Final published version, 1.79 MBLicence: CC BY

http://adsabs.harvard.edu/abs/2018NatCo...9..591T

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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., ... Gregori, G. (2018). Laboratory evidence of dynamo amplification of magnetic fields in a turbulent plasma. Nature Communications, 9, 591. https://doi.org/10.1038/s41467-018-02953-2

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title = "Laboratory evidence of dynamo amplification of magnetic fields in a turbulent plasma",

abstract = "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 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.",

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

year = "2018",

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day = "9",

doi = "10.1038/s41467-018-02953-2",

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Tzeferacos, P, Rigby, A, Bott, AFA, Bell, AR, Bingham, R, Casner, A, Cattaneo, F, Churazov, EM, Emig, J, Fiuza, F, Forest, CB, Foster, J, Graziani, C, Katz, J, Koenig, M, Li, C-K, Meinecke, J, Petrasso, R, Park, H-S, Remington, BA, Ross, JS, Ryu, D, Ryutov, D, White, TG, Reville, B, Miniati, F, Schekochihin, AA, Lamb, DQ, Froula, DH & Gregori, G 2018, 'Laboratory evidence of dynamo amplification of magnetic fields in a turbulent plasma', Nature Communications, vol. 9, pp. 591. https://doi.org/10.1038/s41467-018-02953-2

TY - JOUR

T1 - Laboratory evidence of dynamo amplification of magnetic fields in a turbulent plasma

AU - Tzeferacos, P.

AU - Rigby, A.

AU - Bott, A. F. A.

AU - Bell, A. R.

AU - Bingham, R.

AU - Casner, A.

AU - Cattaneo, F.

AU - Churazov, E. M.

AU - Emig, J.

AU - Fiuza, F.

AU - Forest, C. B.

AU - Foster, J.

AU - Graziani, C.

AU - Katz, J.

AU - Koenig, M.

AU - Li, C.-K.

AU - Meinecke, J.

AU - Petrasso, R.

AU - Park, H.-S.

AU - Remington, B. A.

AU - Ross, J. S.

AU - Ryu, D.

AU - Ryutov, D.

AU - White, T. G.

AU - Reville, B.

AU - Miniati, F.

AU - Schekochihin, A. A.

AU - Lamb, D. Q.

AU - Froula, D. H.

AU - Gregori, G.

PY - 2018/2/9

Y1 - 2018/2/9

N2 - 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 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.

AB - 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 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.

U2 - 10.1038/s41467-018-02953-2

DO - 10.1038/s41467-018-02953-2

M3 - Article

SN - 2041-1723

VL - 9

SP - 591

JO - Nature Communications

JF - Nature Communications

ER -

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

Abstract

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