X-ray Thomson scattering on compressed Be plasmas

ORAL

Abstract

X-ray Thomson scattering measurements have provided much insight into characterization of dense plasmas such as in determining electron temperature, density, and ionization state [1]. We performed spectrally resolved 6 keV x-ray scattering on laser shock compressed Be plasmas in both the non-collective and collective forward scattering regime at the Omega laser facility. From the forward scattering geometry, we have measured a plasmon peak whose frequency is sensitive to the electron density. We will present first data that indicate a density of n$_{e}$=8$\times $10$^{23}$/cc can be reached for a pressure of 10-15 Mbar. \newline [1] S. H. Glenzer \textit{et al}., Phys. Rev. Lett. \textbf{98}, 065002 (2007); Phys. Rev. Lett. \textbf{90}, 175002 (2003). G. Gregori \textit{et al}., Phys. Plasmas \textbf{11}, 2754 (2004).

*Work performed under the auspices of the U.S. Department of Energy by the University of California, Lawrence Livermore National Laboratory under Contract No. W-7405-ENG-48.

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Authors

  • Haeja Lee

    • Physics Department, University of California, Berkeley, CA 94720-7300
    • UCB

  • Paul Neumayer

    • LLNL
    • Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, CA 94550

  • Otto Landen

    • LLNL
    • Lawrence Livermore National Laboratory
    • Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, CA 94550

  • Roger Falcone

    • Physics Department, University of California, Berkeley, CA 94720-7300

  • Siegfried Glenzer

    • Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, CA 94550
    • Lawrence Livermore National Laboratory, University of California, P.O. Box 808, Livermore, California 94551
    • LLNL