Extended Zakharov Modeling of Preheat Caused by the Two-Plasmon Decay Instability in Direct-Drive ICF Plasmas.

ORAL

Abstract

The results of two-dimensional extended Zakharov calculations\footnote{ D. F. DuBois, D. A. Russell, and H. A. Rose, Phys. Rev. Lett. \textbf{74}, 3983 (1995).} of saturated two-plasmon-decay spectra and absorption will be presented in inhomogeneous long-scale-length plasma---the plasma parameters motivated by OMEGA-scale designs. Estimates of hot-electron production and preheat are obtained from the Zakharov calculations using a ``test particle'' approach and a \textit{LILAC} model for target hydrodynamic evolution.\footnote{ J. Delettrez \textit{et al.}, Phys. Rev. A \textbf{36}, 3926 (1987).} This work was supported by the U.S. Department of Energy Office of Inertial Confinement Fusion under Cooperative Agreement No. DE-FC52-08NA28302.

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Authors

  • J.F. Myatt

    • Laboratory for Laser Energetics, U. of Rochester

  • J.A. Delettrez

    • Laboratory for Laser Energetics, U. of Rochester

  • W. Seka

    • Laboratory for Laser Energetics, U. of Rochester

  • D.H. Edgell

    • Laboratory for Laser Energetics, U. of Rochester

  • A.V. Maximov

    • Laboratory for Laser Energetics, U. of Rochester

  • R.W. Short

    • Laboratory for Laser Energetics, U. of Rochester

  • D.F. DuBois

    • LANL and Lodestar Research Corp.

  • D.A. Russell

    • Lodestar Research Corp.

  • H.X. Vu

    • U. of California--San Diego