Simulations of Supernova-relevant Hydrodynamic Instability Experiments on the Nova Laser

Details Simulations of Supernova-relevant Hydrodynamic Instability Experiments on the Nova Laser Simulations of Supernova-relevant Hydrodynamic Instability Experiments on the Nova Laser

Dec 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996aas...189.4507k&link_type=abstract

American Astronomical Society, 189th AAS Meeting, #45.07; Bulletin of the American Astronomical Society, Vol. 28, p.1331

Astronomy and Astrophysics

Astronomy

Scientific paper

Supernova 1987A focused attention on the critical role of hydrodynamic instabilities in the evolution of supernovae (Arnett, D., Fryxell, B.A., and Muller, E., 1989, ApJ, 341, L63.) The earlier than expected detection of gamma rays from the core elements (56) Ni and (56) Co and their anomalously high velocities, together with the spectroscopic puzzle referred to as the Bochum event (Hanuschik. R.W. and Dachs, J., 1987, A&A, 192, L29; Shigeyama, T., and Nomoto, K., 1990, ApJ, 360, 242), all suggest strong mixing of the core outwards into the hydrogen envelope due to the Rayleigh-Taylor (RT) instability. We are developing an experiment using the Nova laser to test the modeling of shock induced RT instabilties under SN-relevant conditions, both in 2D (Kane, J., et al., submitted, ApJ Lett., Oct. 1996) and 3D (Marinak, M.M., Remington, B.A., et al., 1995, PRL, 75, 3677.) The target consists of a two-layer planar package composed of 85 mu m Cu backed by 500 mu m CH_2 with a well defined ripple at the interface. The Nova laser is used to launch a 10-15 Mbar shock across the interface, which initiates the RT instability as the interface decelerates. This resembles the situation at the O-He, and He-H interfaces of a core collapse supernova at intermediate times, ~ 10(3) - 10(4) s. Modeling of the experiment is done using the hydrodynamics codes HYADES and CALE, and the supernova code PROMETHEUS. Results of the experiments and simulations will be presented, and possible implications for supernova modeling will be discussed. *Work performed under the auspices of the U.S. Department of Energy by the Lawrence Livermore National Laboratory under contract number W-7405-ENG-48.

Affiliated with

Also associated with

No associations

Rating

Simulations of Supernova-relevant Hydrodynamic Instability Experiments on the Nova Laser does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Simulations of Supernova-relevant Hydrodynamic Instability Experiments on the Nova Laser, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Simulations of Supernova-relevant Hydrodynamic Instability Experiments on the Nova Laser will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-816825