Evolution of fusion ignition burn through ultrafast reaction history measurements

ORAL

Abstract

The NIF is now routinely making multi-MJ fusion yields, creating a burning, igniting plasma. With advanced diagnostic technology, the time evolution of the fusion can be measured at extreme time resolution (10 ps). With novel reaction history measurements, the transition between an igniting and non-igniting plasma has stark differences in the fusion evolution. The measurements are starting to be used to infer the fusion deposition rate, the explosion rate, and used with other measurements to estimate the hot spot trajectory through temperature and fuel areal density. These measurements can help inform the hot spot formation conditions which ultimately determine the capsule performance. The new measurements offer a novel window into the evolution of an igniting, burning plasma.

*This work was supported by the U.S. Department of Energy through Los Alamos National Laboratory. Los Alamos National Laboratory is operated by Triad National Security, LLC,for the National Nuclear Security Administration of U.S. Department of Energy (Contract No. 89233218CNA000001).

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Presenters

  • Kevin D Meaney

    • LANL

Authors

  • Kevin D Meaney

    • LANL

  • Robert H Dwyer

    • Los Alamos National Laboratory, University of Rochester

  • Patrick J Adrian

    • Los Alamos National Laboratory
    • Massachusetts Institute of Technology (MIT)

  • Nelson M Hoffman

    • Los Alamos National Laboratory

  • William S Daughton

    • Los Alamos Natl Lab

  • Brian Michael Haines

    • Los Alamos National Laboratory

  • John J Kuczek

    • Los Alamos National Lab

  • Ryan S Lester

    • Los Alamos National Laboratory

  • Joshua Paul Sauppe

    • Los Alamos National Laboratory

  • Hermann Geppert-Kleinrath

    • Los Alamos National Laboratory

  • David Schlossberg

    • Lawrence Livermore Natl Lab

  • Andrew G MacPhee

    • Lawrence Livermore Natl Lab

  • Yongho Kim

    • Los Alamos National Laboratory