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

–

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