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Observation of "suprathermal" ion kinetic energy in Inertial Confinement Fusion (ICF) implosions at the National Ignition Facility (NIF).

ORAL · Invited

Abstract

Recent experiments conducted on the NIF have achieved burning plasmas, plasmas for which the dominant energy evolves from fusion itself. Neutron time-of-flight measurements of the plasma flow burn-averaged velocities developed for the ICF program at NIF provide a part per 10,000 measurement precision of the collective plasma motion, as well as a 2 keV precision of the mean neutron kinetic energy. This new diagnostic capability reveals that “high performing” ICF implosions depart from the “hydrodynamic” expectation relating the neutron mean energy to the ion temperature. This departure is a signature of an ion kinetic energy population increase over the Maxwellian behavior of a hydrodynamic plasma. 

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Presenters

  • Edward P Hartouni

    Lawrence Livermore Natl Lab, Lawrence Livermore National Lab

Authors

  • Edward P Hartouni

    Lawrence Livermore Natl Lab, Lawrence Livermore National Lab

  • Alastair S Moore

    Lawrence Livermore Natl Lab

  • Aidan C Crilly

    Imperial College London, CIFS, The Blackett Laboratory, Imperial College London

  • Brian Appelbe

    Imperial College London, Imperial College, London

  • Peter A Amendt

    Lawrence Livermore Natl Lab

  • Kevin L Baker

    Lawrence Livermore Natl Lab

  • Daniel T Casey

    Lawrence Livermore Natl Lab, Lawrence Livermore National Laboratory

  • Daniel S Clark

    Lawrence Livermore Natl Lab

  • Tilo Doeppner

    Lawrence Livermore National Laboratory, Lawrence Livermore Natl Lab

  • Mark J Eckart

    Lawrence Livermore Natl Lab

  • John E Field

    Lawrence Livermore Natl Lab

  • Maria Gatu-Johnson

    MIT Plasma Science and Fusion Center, MIT PSFC, MIT, Massachusetts Institute of Technology (MIT), Massachusetts Institute of Technology MI

  • Gary P Grim

    Lawrence Livermore National Laboratory, Lawrence Livermore Natl Lab

  • Robert Hatarik

    Lawrence Livermore Natl Lab

  • Justin Jeet

    Lawrence Livermore Natl Lab, Lawrence Livermore National Laboratory

  • Shaun M Kerr

    Lawrence Livermore Natl Lab, Lawrence Livermore National Laboratory

  • Joe Kilkenny

    GENERAL ATOMICS

  • Annie L Kritcher

    LLNL, Lawrence Livermore National Laboratory, Lawrence Livermore Natl Lab, University of California, Berkeley

  • Kevin D Meany

    Los Alamos National Laboratory, Los Alamos National Lab, Los Alamos Natl Lab

  • Jose L Milovich

    Lawrence Livermore Natl Lab

  • David H Munro

    Lawrence Livermore Natl Lab

  • Ryan C Nora

    Lawrence Livermore Natl Lab, Lawrence Livermore National Laboratory

  • Arthur E Pak

    Lawrence Livermore Natl Lab

  • Joseph E Ralph

    Lawrence Livermore Natl Lab

  • Harry F Robey

    Lawrence Livermore Natl Lab

  • James S Ross

    Lawrence Livermore Natl Lab, LLNL, Lawrence Livermore National Lab

  • David J Schlossberg

    Lawrence Livermore Natl Lab

  • Scott M Sepke

    Lawrence Livermore Natl Lab, Lawrence Livermore National Laboratory

  • Brian K Spears

    Lawrence Livermore Natl Lab

  • Chris V Young

    Lawrence Livermore National Laboratory, Lawrence Livermore Natl Lab

  • Alex B Zylstra

    Lawrence Livermore Natl Lab