Dependence of Hot-Spot Mix in DT Cryogenic Implosions on the Design Adiabat

ORAL

Abstract

The measured dependence of hot-spot mix[1] on the design adiabat (a = Pshell/PFermi) for laser direct drive (LDD) implosions of DT cryogenic targets on the 60-beam, 30-kJ, 351-nm OMEGA laser is presented. The adiabat of the implosion was controlled by adjusting the temporal shape of the laser drive pulse. Perturbations seeded by debris, target imperfections, engineering features, such as the stalk or fill tube, and laser imprint are amplified by the Richtmyer–Meshkov instability during the shock transit of the shell and by the Rayleigh–Taylor instability of the ablation front during the acceleration phase.[2] The mixing of Ge-doped plastic ablator material with the interior DT fuel was diagnosed with x-ray spectroscopy at stagnation.1


[1] S. P. Regan et al., Phys. Rev. Lett. 111, 045001 (2013).

[2] I. V. Igumenshchev et al., Phys. Plasmas 20, 082703 (2013).

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Presenters

  • Sean P Regan

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

Authors

  • Sean P Regan

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

  • 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

  • Reuben Epstein

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

  • 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

  • M. J. Bonino

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

  • Duc M Cao

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

  • Timothy J Collins

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

  • Edward Michael Campbell

    Laboratory for Laser Energetics, University of Rochester

  • Chad Forrest

    Laboratory for Laser Energetics, University of Rochester

  • Vladimir Yu Glebov

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

  • D. R. Harding

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

  • John A Marozas

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

  • Frederic J Marshall

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

  • 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

  • Thomas C Sangster

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

  • Rahul C Shah

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

  • Christian Stoeckl

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

  • Rain W Luo

    General Atomics

  • Michael E Schoff

    General Atomics

  • Michael Farrell

    General Atomics