Impact of Three-Dimensional Hot-Spot Flow Asymmetry on Ion-Temperature Measurements in Inertial Confinement Fusion Experiments

ORAL

Abstract

Three-dimensional implosion asymmetries lead to significant ion-temperature measurement variations in inertial confinement fusion experiments. We have developed an analytical method to generalize the physical properties of velocity variance in the Brysk ion temperature model. The hot-spot flow asymmetry on ion-temperature measurement variations are shown uniquely governed by a complete set of six hot-spot flow parameters in terms of variance and co-variance of the hot-spot flow velocity distribution. An approximated solution to the minimum inferred ion temperature is derived and is shown close to the thermal ion temperature for low-mode ℓ = 1, which exhibits the largest an-isotropic velocity variance in the single-mode spectrum. The isotropic velocity variance for low‑mode ℓ = 2 is shown causing minimum inferred ion temperatures well above the thermal ion temperature.

*This material is based upon work supported by the Department of Energy National Nuclear Security Administration under Award Number DE-NA0001944. Part of this work was performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under Contract DE‑AC52‑07NA27344.

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Presenters

  • Ka Ming Woo

    • Lab for Laser Energetics

Authors

  • Ka Ming Woo

    • Lab for Laser Energetics

  • Riccardo Betti

    • Univ of Rochester
    • Laboratory for Laser Energetics
    • Laboratory for Laser Energetics, University of Rochester
    • Lab for Laser Energetics, Univ of Rochester
    • Univ of Rochester, Univ of Rochester
    • University of Rochester and Laboratory for Laser Energetics

  • Dov Shvarts

    • Nuclear Research Center Negev, Israel, Ben Gurion University of the Negev, Israel
    • Nuclear Research Center NEGEV, Israel, Ben-Gurion University, Israel
    • NRCN
    • Ben-Gurion University of the Negev
    • Ben Gurion Univ of the Negev

  • Owen M. Mannion

    • Lab for Laser Energetics
    • Lab for Laser Energetics, Univ of Rochester

  • Dhrumir P Patel

    • Lab for Laser Energetics, Univ of Rochester
    • Univ of Rochester

  • Valeri N Goncharov

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

  • Kenneth S. Anderson

    • Lab for Laser Energetics
    • Lab for Laser Energetics, Univ of Rochester

  • Radha Bahukutumbi

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

  • James P Knauer

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

  • Arijit Bose

    • Laboratory for Laser Energetics, U. of Rochester
    • Univ of Rochester

  • Varchas Gopalaswamy

    • Lab for Laser Energetics
    • Laboratory for Laser Energetics U. of Rochester
    • Lab for Laser Energetics, Univ of Rochester

  • Alison R Christopherson

    • Univ of Rochester
    • Lab for Laser Energetics
    • Laboratory for Laser Energetics, University of Rochester

  • E. M. M. Campell

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

  • J. Sanz

    • Universidad Politecnica de Madrid

  • Hussein Aluie

    • Univ of Rochester