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Three-Dimensional Hot-Spot Reconstruction in Inertial Fusion Implosions

ORAL

Abstract

Three-dimensional effects play a crucial role during the hot-spot formation in inertial fusion implosions. A technique for 3-D hot-spot reconstruction from experimental observables is presented. Using the diagonalization of the velocity-variance matrix in apparent ion temperatures (Ti), the effective asymmetry of both isotropic and anisotropic flows is shown to be governed by the direction of the maximum eigenvalue. A good agreement between the effective-flow axis and the hot-spot flow vector for implosions with large Ti asymmetries is observed. The effective-flow axis is used to diagnose the interaction between even and odd Legendre modes. Using the analytic L = 1 areal-density (rR) model, the 3-D variation of rR is shown to be a function of the dot product between the line of sight and the hot-spot flow vectors. A perturbation-theory approach is derived to reconstruct the 3-D hot-spot emission profile using spherical-harmonic modes. The radial dependence of modal amplitudes is represented by a power series. This method is applied to reconstruct a 3-D hot-spot emission profile using x-ray images at different views.

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Presenters

  • Ka Ming Woo

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

Authors

  • Ka Ming Woo

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

  • Riccardo Betti

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

  • Sean P Regan

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

  • Cliff A Thomas

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

  • Christian Stoeckl

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

  • B. Zirps

    University of Rochester

  • Kristen Churnetski

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

  • Chad J Forrest

    Lab for Laser Energetics, University of Rochester

  • Timothy J Collins

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

  • Wolfgang R Theobald

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

  • Rahul C Shah

    Lab for Laser Energetics, Laboratory for Laser Energetics, University of Rochester, Laboratory for Laser Energetics - Rochester, Laboratory for Laser Energetics, U. of Rochester, University of Rochester

  • Owen M Mannion

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

  • Dhrumir P Patel

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

  • Duc M Cao

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

  • James P Knauer

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

  • Valeri N Goncharov

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

  • Radha Bahukutumbi

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

  • Reuben Epstein

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

  • Varchas Gopalaswamy

    Laboratory for Laser Energetics, University of Rochester, Lab for Laser Energetics, Laboratory for Laser Energetics, U. of Rochester, Laboratory for Laser Energetics - Rochester, University of Rochester

  • Frederic J Marshall

    University of Rochester

  • Hans Rinderknecht

    University of Rochester Laboratory for Laser Energetics, Laboratory for Laser Energetics, U. of Rochester, Laboratory for Laser Energetics - Rochester, Lab for Laser Energetics, Laboratory for Laser Energetics, Laboratory for Laser Energetics, University of Rochester, University of Rochester

  • Edward M Campbell

    University of Rochester