Spike morphology in supernova-relevant hydrodynamics experiments

Details Spike morphology in supernova-relevant hydrodynamics experiments Spike morphology in supernova-relevant hydrodynamics experiments

Nov 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aps..dppnp9065d&link_type=abstract

American Physical Society, 52nd Annual Meeting of the APS Division of Plasma Physics, November 8-12, 2010, abstract #NP9.065

Physics

Plasma Physics

Scientific paper

This presentation describes experiments performed on the Omega and Omega EP lasers exploring the 3D Rayleigh-Taylor instability at a blast-wave-driven interface. The laser irradiates a plastic disk and creates a planar blast wave, which then crosses the interface between the disk and a lower-density foam, inducing the Rayleigh-Taylor instability. The plastic disk has an intentional pattern machined at the plastic/foam interface. This seed perturbation is three-dimensional with a basic structure of two orthogonal sine waves with a wavelength of 71 μm and amplitude of 2.5 μm. Interface structure has been detected under these conditions using x-ray radiography, and some of the resulting data will be shown. Current experiments are further examining the features of the unstable interface using proton radiography.

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