Computational Modeling of Experiments on NOVA to Study Feed-out/Feed-in*

Details Computational Modeling of Experiments on NOVA to Study Feed-out/Feed-in* Computational Modeling of Experiments on NOVA to Study Feed-out/Feed-in*

Nov 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996aps..dpp..8e05s&link_type=abstract

American Physical Society, Division of Plasma Physics Meeting, November 10-15, 1996, abstract #8E.05

Physics

Plasma Physics

Scientific paper

Experiments have been designed to study feed-out/feed-in on the NOVA laser using planar targets mounted on a hohlraum with perturbations placed on the cold side. The code LASNEX was used to model the experiments. The first series of calculations was run for the following targets: 87 μm Al, 80 μm Al/10 μm Be, 35 μm Al, 32 μm Al/10 μm Be. A 4 μm amplitude, 50 μm wavelength perturbation was placed on the back of all targets. Radiation was generated using a 2.2 ns, 25 kJ, 1:5 contrast shaped pulse. It is believed the thicker targets have primarily Richtmyer-Meshkov (RM) effects, while the thinner targets exhibit both (RM) and ablative Rayleigh-Taylor (ART) instabilities. Calculations suggest the density jump between Be and Al may not have a large effect on the feed-out. The second series of calculations involve targets designed to exhibit a larger amount of ART growth. *This work was done under USDOE contract W-7405-ENG-36.

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