Numerical modeling of laser-driven experiments aiming to demonstrate magnetic field amplification via turbulent dynamo

Tzeferacos, P. and Rigby, A. and Bott, A. and Bell, A. R. and Bingham, R. and Casner, A. and Cattaneo, F. and Churazov, E. M. and Emig, J. and Flocke, N. and Fiuza, F. and Forest, C. B. and Foster, J. and Graziani, C. and Katz, J. and Koenig, M. and Li, C.-K. and Meinecke, J. and Petrasso, R. and Park, H.-S. and Remington, B. A. and Ross, J. S. and Ryu, D. and Ryutov, D. and Weide, K. and White, T. G. and Reville, B. and Miniati, F. and Schekochihin, A. A. and Froula, D. H. and Gregori, G. and Lamb, D. Q. (2017) Numerical modeling of laser-driven experiments aiming to demonstrate magnetic field amplification via turbulent dynamo. Physics of Plasmas, 24. 041404. ISSN 1070-664X (https://doi.org/10.1063/1.4978628)

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Abstract

The universe is permeated by magnetic fields, with strengths ranging from a femtogauss in the voids between the filaments of galaxy clusters to several teragauss in black holes and neutron stars. The standard model behind cosmological magnetic fields is the nonlinear amplification of seed fields via turbulent dynamo to the values observed. We have conceived experiments that aim to demonstrate and study the turbulent dynamo mechanism in the laboratory. Here, we describe the design of these experiments through simulation campaigns using FLASH, a highly capable radiation magnetohydrodynamics code that we have developed, and large-scale three-dimensional simulations on the Mira supercomputer at the Argonne National Laboratory. The simulation results indicate that the experimental platform may be capable of reaching a turbulent plasma state and determining the dynamo amplification. We validate and compare our numerical results with a small subset of experimental data using synthetic diagnostics.

  • Item type:Article
    ID code:60521
    Dates:
    Date
    Event
    22 March 2017
    Published
    3 February 2017
    Accepted
    Notes:This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. The following article appeared in Tzeferacos, P., Rigby, A., Bott, A., Bell, A. R., Bingham, R., Casner, A., ... Lamb, D. Q. (2017). Numerical modeling of laser-driven experiments aiming to demonstrate magnetic field amplification via turbulent dynamo. Physics of Plasmas, 24, [041404], and may be found at https://doi.org/10.1063/1.4978628
    Subjects:Science > Physics
    Department:Faculty of Science > Physics
    Depositing user: Pure Administrator
    Date deposited:25 Apr 2017 10:28
    Last modified:13 Apr 2024 17:57
    URI:https://strathprints.strath.ac.uk/id/eprint/60521
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