Transport of high-energy charged particles through spatially intermittent turbulent magnetic fields

L. E. Chen, A. F.A. Bott, P. Tzeferacos, A. Rigby, A. Bell, R. Bingham, C. Graziani, J. Katz, M. Koenig, C. K. Li, R. Petrasso, H. S. Park, J. S. Ross, D. Ryu, T. G. White, B. Reville, J. Matthews, J. Meinecke, F. Miniati, E. G. ZweibelS. Sarkar, A. A. Schekochihin, D. Q. Lamb, D. H. Froula, G. Gregori

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Identifying the sources of the highest energy cosmic rays requires understanding how they are deflected by the stochastic, spatially intermittent intergalactic magnetic field. Here we report measurements of energetic charged-particle propagation through a laser-produced magnetized plasma with these properties. We characterize the diffusive transport of the particles experimentally. The results show that the transport is diffusive and that, for the regime of interest for the highest energy cosmic rays, the diffusion coefficient is unaffected by the spatial intermittency of the magnetic field.

Original languageEnglish
Article number114
Number of pages18
JournalAstrophysical Journal
Issue number2
Publication statusPublished - 3 Apr 2020


  • high energy astrophysics
  • cosmic radiation
  • magnetic fields
  • particle astrophysics

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