Recent results of the Defect-Induced Mix Experiments (DIME) on NIF

ORAL

Abstract

Investigations of directly driven implosions have been performed including experiments on Omega, and more recently NIF, to deduce the extent and uniformity of 4$\pi $ and defect-induced mix near the shell/gas interface of plastic (CH) capsules filled with 5 atm D$_{2}$ gas. Imaging diagnostics are used to measure the spatial variation of mix caused by the growth of non-uniformities in both capsule and laser drive characteristics. Thin (2$\mu $m) layers containing 1-2{\%} (atomic) mid-Z dopants are imaged spectrally at late time in the implosion using multiple monochromatic imaging of H-like and He-like atomic line emission. Areal image backlighting of the capsules provides both $r(t)$ and the symmetry of the implosion. Recent results will be shown including inferred 4$\pi $ mix width, laser imprint induced mix, and mix from capsule variations.

Authors

  • M.J. Schmitt

    Los Alamos National Laboratory

  • P.A. Bradley

    Los Alamos National Laboratory

  • J.A. Cobble

    Los Alamos National Laboratory

  • P. Hakel

    Los Alamos National Laboratory

  • Scott Hsu

    Los Alamos National Laboratory, LANL

  • N.S. Krasheninnikova

    Los Alamos National Laboratory

  • G.A. Kyrala

    Los Alamos National Laboratory

  • T.J. Murphy

    Los Alamos National Laboratory

  • K.A. Obrey

    Los Alamos National Laboratory

  • R.C. Shah

    Los Alamos National Laboratory

  • I.L. Tregillis

    Los Alamos National Laboratory

  • R.S. Craxton

    Laboratory for Laser Energetics, U. of Rochester

  • P.W. McKenty

    Laboratory for Laser Energetics, U. of Rochester

  • Roberto Mancini

    University of Nevada, Reno, Physics Department, University of Nevada, Reno, University of Nevada, Reno Physics Department

  • Heather Johns

    University of Nevada, Reno, University of Nevada, Reno Physics Department

  • Tirtha Joshi

    University of Nevada, Reno, University of Nevada, Reno Physics Department

  • Daniel Mayes

    University of Nevada, Reno, University of Nevada, Reno Physics Department