Using Optical Thomson Scattering to Determine Transport Properties in a Turbulent Plasma

ORAL

Abstract

Dynamo in astrophysical turbulence is a key process for the amplification of magnetic fields. The advent of high-power laser systems, such as the Laboratory for Laser Energetics' OMEGA and Lawrence Livermore National Laboratory's National Ignition Facility (NIF), has made it possible to recreate these astrophysical conditions in terrestrial laboratories. Presented here are data obtained from an experimental campaign conducted on OMEGA that aimed to demonstrate dynamo amplification. This work focuses on the optical Thomson scattering data collected to investigate the transport properties of the turbulent plasma. By time-resolving the ion-acoustic wave and electron plasma wave scattering, their autocorrelation can be used to extract relevant transport properties, such as diffusion and thermal conductivity. We intend to extend this analysis to the NIF where significant modification of heat transport is expected to occur.

*This material is based upon work supported by the Department of Energy National Nuclear Security Administration under Award Number DE-NA0003856. The research leading to these results also received funding from the U.K. EPSRC (grant numbers EP/M022331/1 and EP/N014472/1); the European Research Council under the European Community's Seventh Framework Programme (FP7/2007-2013)/ERC grant agreements nos. 256973 and 247039; the U.S. DOE under Contract No. B591485 to LLNL.

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Presenters

  • Hannah Poole

    • University of Oxford

Authors

  • Hannah Poole

    • University of Oxford

  • Charlotte A Palmer

    • Queen's University Belfast

  • Archie F Bott

    • Princeton University

  • Petros Tzeferacos

    • University of Rochester
    • Univ of Rochester

  • Dustin Froula

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

  • Joseph D Katz

    • University of Rochester - Laboratory for Laser Energetics
    • University of Rochester Laboratory for Laser Energetics
    • Laboratory for Laser Energetics
    • University of Rochester
    • Laboratory for Laser Energetics, University of Rochester

  • Steven S Ross

    • Lawrence Livermore Natl Lab
    • Lawrence Livermore National Laboratory

  • Hye-Sook Park

    • Lawrence Livermore Natl Lab
    • LLNL

  • Yingchao Lu

    • University of Rochester

  • Adam Reyes

    • University of Rochester

  • George F Swadling

    • Lawrence Livermore National Laboratory
    • Lawrence Livermore Natl Lab

  • Sam Iaquinta

    • University of Oxford

  • Jena Meinecke

    • University of Oxford

  • Alexander A Schekochihin

    • University of Oxford

  • Don Q Lamb

    • University of Chicago

  • Sean P Regan

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

  • Gianluca Gregori

    • University of Oxford