Transient X-ray Diffraction from Shock Compressed Si Crystals on the Nova Laser

Details Transient X-ray Diffraction from Shock Compressed Si Crystals on the Nova Laser Transient X-ray Diffraction from Shock Compressed Si Crystals on the Nova Laser

Nov 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998aps..dpp.r8q15l&link_type=abstract

American Physical Society, Division of Plasma Physics Meeting, November 16-20, 1998 New Orleans, LA, abstract #R8Q.15

Physics

Plasma Physics

Scientific paper

A series of experiments has been done to study the shock compression of Si crystals using a hohlraum x-ray drive on Nova. We have shock compressed Si along the (111) and (400) lattice directions at peak pressures of up to 500 kbar. We observe up to a 10% compression in the lattice spacing. The diffraction from a compressed (400) lattice shows evidence of a 2-wave shock structure. Additional experiments on the Trident laser at LANL and Nova at LLNL are designed to look at the simultaneous diffraction from (400) and (040) lattice planes in order to characterize the transition from elastic to plastic deformation in the crystal lattice. [2] Results from the experiments and simulations of the Bragg diffraction data generated by post-processing hydrodynamics calculations will be presented.

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