Using high-energy radiography measurements of the inner shell shape of double shell implosions

ORAL

Abstract

A double shell capsule consists of an outer shell, a medium between the shells and a high-Z inner shell filled with DT fuel. Double shell targets rely on effectively transferring the kinetic energy of the outer shell to the inner shell to compress the DT fuel. There are many factors that contribute to the shape of the compressed inner shell. Some of these factors are target-related and include the gap between the outer shell hemispheres, inner and outer shell thickness variations, and outer and inner shell offsets. We developed a platform utilizing the current abilities of the Advanced Radiographic Capability (ARC) on the National Ignition Facility (NIF) using Chromium as a surrogate inner shell to measure the inner shell shape. We will present experimental measurements of the inner shell shape, discuss the challenges with determining a shape from the x-ray radiographs, and compare the results with as-shot simulations.

*This work was performed under the auspices of the US DOE by LANL under contract number 89233218CNA000001.

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Presenters

  • Paul A Keiter

    • Los Alamos National Laboratory

Authors

  • Paul A Keiter

    • Los Alamos National Laboratory

  • Saba Goodarzi

    • Los Alamos National Lab
    • Los Alamos National Laboratory

  • Eric N Loomis

    • Los Alamos Natl Lab

  • Joshua P Sauppe

    • LANL
    • Los Alamos National Laboratory
    • Los Alamos Natl Lab

  • Irina Sagert

    • Los Alamos National Laboratory

  • David D Meyerhofer

    • Los Alamos National Laboratory

  • Tom Byvank

    • Los Alamos National Laboratory

  • Scott Vonhoff

    • General Atomics

  • Cohl Vardon Houldin Hatala

    • Lawrence Livermore National Laboratory

  • Riccardo Tommasini

    • Lawrence Livermore National Laboratory

  • David Alessi

    • Lawrence Livermore Natl Lab
    • Lawrence Livermore National Laboratory

  • Matt Prantil

    • Lawrence Livermore National Laboratory

  • Tom Lanier

    • Lawrence Livermore National Laboratory

  • Weston Montgomery

    • LLNL
    • Lawrence Livermore National Laboratory

  • Connor Clary

    • Lawrence Livermore National Laboratory

  • Rhyan Reynolds

    • Lawrence Livermore National Lab
    • Lawrence Livermore National Laboratory

  • Daniel H Kalantar

    • Lawrence Livermore Natl Lab

  • David A Martinez

    • Lawrence Livermore Natl Lab