Physics
Scientific paper
Mar 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998aps..mar.k3411k&link_type=abstract
American Physical Society, Annual March Meeting, March 16-20, 1998 Los Angeles, CA, abstract #K34.11
Physics
Scientific paper
We are conducting experiments on the Nova laser to investigate the Rayleigh-Taylor instability in metal foils maintained in the solid state. In support of this effort, we are developing dynamic diffraction as a diagnostic of material state for shock compressed samples. We use a hohlraum x-ray drive to shock compress the crystal samples, and x-rays from a point backlighter to measure the lattice compression by diffraction. We have observed shock compression of more than 10% in 1-D in a Si crystal. We probe the crystal by simultaneous Bragg and Laue diffraction of orthogonal lattice planes, (R. R. Whitlock and J. S. Wark, Phys. Rev. B 52), 8 (1995). to study the transition from elastic to plastic compression in a shocked solid. We are also working to use this diagnostic to verify that the metal foils used in the instability growth experiments remain solid at peak compression. We will present results from the shocked Si experiments.
Chandler E. A.
Colvin Jeffrey D.
Failor B. H.
Hauer A. A.
Kalantar Daniel H.
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