Simulations of 2D and 3D Scaled Supernova Jet Experiments at Omega*

Details Simulations of 2D and 3D Scaled Supernova Jet Experiments at Omega* Simulations of 2D and 3D Scaled Supernova Jet Experiments at Omega*

Oct 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aps..dpprp1090w&link_type=abstract

American Physical Society, 43rd Annual Meeting of the APS Division of Plasma Physics October 29 - November 2, 2001 Long Beach, C

Physics

Plasma Physics

Scientific paper

Over the last few years we have fielded numerous jet experiments on the NOVA and OMEGA lasers (invited talk by Foster et al., this conference). We are now transitioning these experiments to more closely simulate scaled supernova jets during the explosion phase. In particular, we have fielded shots on OMEGA that investigate the difference between jets created by ablating a 3D (r,z) cylindrical pin versus a 2D (x,y) finite linear ridge. The Brominated CH pin or ridge is mounted symmetrically on the axis at the end of a laser-heated halfraum such that the radiation ablation is symmetric. The jet enters a cylinder of carbon foam and transmission radiographs are taken at different times and at two angles perpendicular to the symmetry axis. The LLNL 2-dimensional ALE and the LANL 3-dimensional Adaptive-Mesh-Refinement RAGE codes were used to design these experiments. Although 2-dimensional calculations are sufficient for the 3D cylindrical pin, 3-dimensional calculations are required for the 2D linear ridge due to its finite nature. To minimize 3-dimensional effects for the ridge, only the central section was Brominated with the ends made out of polyimide at the same density. Brominated and polyimide parts were also used in the pin to act as tagging that allows tracking the motion of different parts of the pin. In this poster, the calculations by the different codes will be compared to each other and to the data. These kinds of jet experiments should prove to be useful as validation for the new 3-dimensional codes being developed by the astrophysical community. *This work is performed under the auspices of the U. S. Department of Energy by the Los Alamos National Laboratory Laboratory under Contract No. W-7405-ENG-36, Lawrence Livermore National Laboratory under Contract No. W-7405-ENG-48, and the Laboratory for Laser Energetics under Contract No. DE-FC03-92SF19460.

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