Laboratory evidence of dynamo amplification of magnetic fields in a turbulent plasma
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 mo...
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Article |
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Nature Publishing Group
2018
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| Online Access: | http://hdl.handle.net/1721.1/118778 https://orcid.org/0000-0002-6919-4881 |
| _version_ | 1811003505348968448 |
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| author | 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. 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. Li, Chikang |
| author2 | Massachusetts Institute of Technology. Plasma Science and Fusion Center |
| author_facet | Massachusetts Institute of Technology. Plasma Science and Fusion Center 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. 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. Li, Chikang |
| author_sort | Tzeferacos, P. |
| collection | MIT |
| description | 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. |
| first_indexed | 2024-09-23T16:05:29Z |
| format | Article |
| id | mit-1721.1/118778 |
| institution | Massachusetts Institute of Technology |
| last_indexed | 2024-09-23T16:05:29Z |
| publishDate | 2018 |
| publisher | Nature Publishing Group |
| record_format | dspace |
| spelling | mit-1721.1/1187782022-10-02T06:18:55Z 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. 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. Li, Chikang Massachusetts Institute of Technology. Plasma Science and Fusion Center Li, Chikang 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. Seventh Framework Programme (European Commission) (Grant 256973) Seventh Framework Programme (European Commission) (Grant 247039) United States. Department of Energy (Lawrence Livermore National Laboratory. Contract B591485) United States. Department of Energy (Grant DE-NA0003539) 2018-10-25T16:59:20Z 2018-10-25T16:59:20Z 2018-02 2018-10-12T19:08:03Z Article http://purl.org/eprint/type/JournalArticle 2041-1723 http://hdl.handle.net/1721.1/118778 Tzeferacos, P., et al. “Laboratory Evidence of Dynamo Amplification of Magnetic Fields in a Turbulent Plasma.” Nature Communications, vol. 9, no. 1, Dec. 2018. https://orcid.org/0000-0002-6919-4881 http://dx.doi.org/10.1038/s41467-018-02953-2 Nature Communications Creative Commons Attribution 4.0 International License http://creativecommons.org/licenses/by/4.0/ application/pdf Nature Publishing Group Nature |
| spellingShingle | 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. 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. Li, Chikang Laboratory evidence of dynamo amplification of magnetic fields in a turbulent plasma |
| title | Laboratory evidence of dynamo amplification of magnetic fields in a turbulent plasma |
| title_full | Laboratory evidence of dynamo amplification of magnetic fields in a turbulent plasma |
| title_fullStr | Laboratory evidence of dynamo amplification of magnetic fields in a turbulent plasma |
| title_full_unstemmed | Laboratory evidence of dynamo amplification of magnetic fields in a turbulent plasma |
| title_short | Laboratory evidence of dynamo amplification of magnetic fields in a turbulent plasma |
| title_sort | laboratory evidence of dynamo amplification of magnetic fields in a turbulent plasma |
| url | http://hdl.handle.net/1721.1/118778 https://orcid.org/0000-0002-6919-4881 |
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