Solid State Hydrodynamics Experiments on the Nova Laser

Details Solid State Hydrodynamics Experiments on the Nova Laser Solid State Hydrodynamics Experiments on the Nova Laser

Nov 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998aps..dpp.r8q18k&link_type=abstract

American Physical Society, Division of Plasma Physics Meeting, November 16-20, 1998 New Orleans, LA, abstract #R8Q.18

Physics

Plasma Physics

Scientific paper

In order to study the high strain rate dependence of the material strength in metal foils, we are developing solid state experiments using a hohlraum x-ray drive on the Nova laser. These experiments require a low adiabat drive and careful preheat control. We have developed a drive to shock compress Cu foils at peak pressures of 3 Mbar using a brominated polystyrene ablator. We have characterized this drive with a range of different measurement techniques including Dante, side-on foil trajectories, and shock timing measurements. The ablator-metal interface is calculated to remain solid under compression, but most of the foil melts. A modified x-ray drive will be used to shock compress Al foils at peak pressures of 1.4 Mbar. In this case the foil is calculated to remain solid and the material strength is calculated to inhibit perturbation growth. We will present results of the experiments and simulations of the drive and instability growth measurements. We also discuss the development of dynamic x-ray diffraction techniques to demonstrate the material state under compression. *Work performed under the auspices of the U.S. Department of Energy by the Lawrence Livermore National Laboratory under Contract W-7405-ENG-48.

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