Bulletin of the American Physical Society
49th Annual Meeting of the Division of Plasma Physics
Volume 52, Number 11
Monday–Friday, November 12–16, 2007; Orlando, Florida
Session BO6: Shock Waves, Plasma Expansion and Equations of State
9:30 AM–12:30 PM,
Monday, November 12, 2007
Rosen Centre Hotel Room: Salon 5/6
Chair: Gilbert Collins, Lawrence Livermore National Laboratory
Abstract ID: BAPS.2007.DPP.BO6.7
Abstract: BO6.00007 : Experimental determination of the Plasmon dispersion in warm-dense Beryllium.*
10:42 AM–10:54 AM
Preview Abstract Abstract
The dispersion of electron plasma waves is of fundamental interest as it determines optical properties of matter. We apply x-ray Thomson scattering to measure the Plasmon dispersion in a solid-density radiatively heated beryllium plasma. A 0.6 mm diameter beryllium cylinder was isochorically heated by x-rays produced by irradiation of a silver foil with laser pulses of up to 10 kJ of energy at a wavelength of 355 nm. The plasma is probed by chlorine Lyman-alpha line radiation at 2.96 keV, produced from chlorine containing plastic foils driven by 12 kJ of laser energy. The scattered probe radiation is spectrally resolved with a high efficiency gated crystal spectrometer in forward direction giving access to the collective scattering regime. By varying the probe source location various scattering angles have been accessed. The data are compared to the current high-density statistical plasma models.
*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.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2007.DPP.BO6.7
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