Measurements of modulation growth due to ablative Richtmyer-Meshkov instability using 2D laser-imprinted modulations

ORAL

Abstract

Unstable growth due to the ablative Richtmyer-Meshkov instability was studied on OMEGA at laser drive intensity of 5e13 W/cm$^{2}$ in a direct drive configuration with a planer CH$_{2}$ foil. Initial 2D modulations with spatial wavelengths of 30, 70, and 120 um were imprinted on targets by laser beams using special 2D phase plates. The evolution of modulations due to the ablative RM instability was measured with x-ray radiography. Measured modulation growth will be presented and compared with predictions of 2D simulations.

*This work was performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under Contract DE-AC52-07NA27344. LLNL-ABS-563572.

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Authors

  • David Martinez

    • Lawrence Livermore National Laboratory
    • Lawrence Livermore National Laboratory, Livermore, CA 94550, USA

  • V.A. Smalyuk

    • Lawrence Livermore National Laboratory, Livermore, CA 94550, USA

  • H.-S. Park

    • Lawrence Livermore National Laboratory, Livermore, CA 94550, USA

  • B. Remington

    • Lawrence Livermore National Laboratory, Livermore, CA 94550, USA

  • A. Casner

    • CEA, DAM, DIF, F-91297 Arpajon, France

  • L. Masses

    • CEA, DAM, DIF, F-91297 Arpajon, France

  • B. Delorme

    • CEA, DAM, DIF, F-91297 Arpajon, France

  • I. Igumenschev

    • Laboratory for laser Energetics, University of Rochester, Rochester New York 14623

  • D. Shvarts

    • NRCN, Beer Sheva 84190, Israel

  • Y. Elbaz

    • NRCN, Beer Sheva 84190, Israel