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Title: Supernova experiments on the Nova Laser

Supernova (SN) 1987A focused attention on the critical role of hydrodynamic instabilities in the evolution of supernovae. To test the modeling of these instabilities, we are developing laboratory experiments of hydrodynamic mixing under conditions relevant to supernovae. Initial results were reported in [l]. The Nova laser is used to generate a 10-15 Mbar shock at the interface of a two-layer planar target, which triggers perturbation growth, due to the Richtmyer-Meshkov and Rayleigh-Taylor instabilities as the interface decelerates. This resembles the hydrodynamics of the He-H interface of a Type II supernova at intermediate times, up to a few x10{sup 3} s. The experiment is modeled using the hydrodynamics codes HYADES and CALE, and the supernova code PROMETHEUS. Results of the experiments and simulations are presented. New analysis of the bubble velocity is presented, as well as a study of 2D vs. 3D difference in growth at the He-H interface of SN 1987A.
Authors:
; ; ; ; ; ;
Publication Date:
OSTI Identifier:
301352
Report Number(s):
UCRL-JC--129000; CONF-971208--
ON: DE98058288; BR: DP0210000; CNN: W-7405-Eng-48
DOE Contract Number:
W-7405-ENG-48
Resource Type:
Conference
Resource Relation:
Conference: 2. Oak Ridge symposium on atomic and nuclear astrophysics, Oak Ridge, TN (United States), 2-6 Dec 1997; Other Information: PBD: 2 Dec 1997
Research Org:
Lawrence Livermore National Lab., CA (United States)
Sponsoring Org:
USDOE, Washington, DC (United States)
Country of Publication:
United States
Language:
English
Subject:
66 PHYSICS; SUPERNOVAE; MIXING; HYDRODYNAMICS; PLASMA INSTABILITY; ONE-DIMENSIONAL CALCULATIONS; TWO-DIMENSIONAL CALCULATIONS; COMPUTERIZED SIMULATION; NOVA FACILITY