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

Chen, L. E. and Bott, A. F.A. and Tzeferacos, P. and Rigby, A. and Bell, A. and Bingham, R. and Graziani, C. and Katz, J. and Koenig, M. and Li, C. K. and Petrasso, R. and Park, H. S. and Ross, J. S. and Ryu, D. and White, T. G. and Reville, B. and Matthews, J. and Meinecke, J. and Miniati, F. and Zweibel, E. G. and Sarkar, S. and Schekochihin, A. A. and Lamb, D. Q. and Froula, D. H. and Gregori, G. (2020) Transport of high-energy charged particles through spatially intermittent turbulent magnetic fields. Astrophysical Journal, 892 (2). 114. ISSN 1538-4357

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    Abstract

    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.

    ORCID iDs

    Chen, L. E., Bott, A. F.A., Tzeferacos, P., Rigby, A., Bell, A., Bingham, R. ORCID logoORCID: https://orcid.org/0000-0002-9843-7635, Graziani, C., Katz, J., Koenig, M., Li, C. K., Petrasso, R., Park, H. S., Ross, J. S., Ryu, D., White, T. G., Reville, B., Matthews, J., Meinecke, J., Miniati, F., Zweibel, E. G., Sarkar, S., Schekochihin, A. A., Lamb, D. Q., Froula, D. H. and Gregori, G.;