Charged particle transport in laser-driven magnetized turbulence: understanding the intergalactic voyage of ultra-high energy cosmic rays

ORAL

Abstract

How charged particles and turbulent magnetic fields interact is key to understanding the journey of cosmic rays through space. In this talk we report on numerical simulations and laser-driven experiments at the OMEGA Laser Facility that measure the propagation of energetic particles through random magnetic fields in a turbulent plasma. We characterize their angular diffusion and recover their mean free path and associated diffusion coefficients. The OMEGA experiments we present constitute the first laboratory probe of particle diffusion through magnetized turbulence in the absence of a mean background field and complement laboratory studies of energetic particle propagation in diffuse plasmas, where there is a strong guide field. The experiments emulate the propagation of ultra-high energy cosmic rays through the intergalactic medium, critical for interpreting anisotropies in their arrival direction and for constraining the distance of their sources

*The research leading to these results has received funding from the ERC, U.S. DOE NNSA, U.S. DOE Office of Science, NSF, AWE, EPSRC, STFC, and NRF of Korea. Awards of computer time were provided by the U.S. DOE ALCC program and used resources of the ALCF at ANL. The experiments were conducted at LLE, University of Rochester.

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Presenters

  • Petros Tzeferacos

    • Univ of Chicago
    • University of Chicago, University of Oxford

Authors

  • Petros Tzeferacos

    • Univ of Chicago
    • University of Chicago, University of Oxford

  • Laura E Chen

    • University of Oxford

  • Archie F. A. Bott

    • University of Oxford

  • Alexandra Rigby

    • Oxford University, UK
    • University of Oxford

  • Anthony R. Bell

    • University of Oxford

  • Robert Bingham

    • Rutherford Appleton Lab
    • Rutherford Appleton Lab, University of Strathclyde
    • Rutherford Appleton Lab, Univeristy of Stratchclyde

  • Joe Katz

    • University of Rochester Laboratory for Laser Energetics
    • Laboratory for Laser Energetics, U. of Rochester
    • Laboratory for Laser Energetics
    • Univ of Rochester
    • University of Rochester

  • Michel Koenig

    • Ecole Polytechnique

  • Chikang Li

    • Massachusetts Inst of Tech-MIT
    • MIT

  • Richard David Petrasso

    • Massachusetts Inst of Tech-MIT
    • MIT

  • Hye-Sook Park

    • Lawrence Livermore Natl Lab
    • Lawrence Livermore National Lab
    • Lawrence Livermore National Laboratory

  • J. Steven Steven Ross

    • Lawrence Livermore National Lab
    • Lawrence Livermore Natl Lab
    • Lawrence Livermore National Laboratory

  • Dongsu Ryu

    • Ulsan Natl Inst of Sci & Tech

  • Dmitri D Ryutov

    • Lawrence Livermore National Lab
    • Lawrence Livermore Natl Lab

  • Thomas G White

    • U. of Nevada, Reno
    • U. of Nevada, Reno, University of Oxford

  • Brian Reville

    • QUB
    • Queens University Belfast

  • James Matthews

    • University of Oxford

  • Jena Meinecke

    • University of Oxford

  • Francesco Miniati

    • University of Oxford

  • Ellen Gould Zweibel

    • Univ of Wisconsin, Madison
    • University of Wisconsin-Madison
    • University of Wisconsin

  • Subir Sarkar

    • University of Oxford, Niels Bohr Institute
    • University of Oxford

  • Alexander A Schekochihin

    • Oxford
    • University of Oxford

  • Dustin H Froula

    • University of Rochester Laboratory for Laser Energetics
    • Univ of Rochester
    • Laboratory for Laser Energetics, U. of Rochester
    • Laboratory for Laser Energetics
    • Laboratory for Laser Energetics, University of Rochester
    • University of Rochester

  • Don Q Lamb

    • Univ of Chicago
    • University of Chicago

  • Gianluca Gregori

    • University of Oxford
    • U. of Oxford
    • University of Oxford, University of Chicago