Experimental Testbed for the Study of Hydrodynamic Issues in Supernovae.

Robey, H. F. ; Kane, J. O. ; Remington, B. A. ; Drake, R. P. ; Hurricane, O. A. ; Louis, H. ; Wallace, R. J.

Technical Information Center Oak Ridge Tennessee

关键词: Hydrodynamics;    Supernovae;    Astrophysics;    Lasers;    Coupling;   

RP-ID  :  DE200515013170

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

The purpose of the present paper is twofold. The first goal is to establish the range astrophysical phenomena that can be addressed on a laser facility. To that end, we present initial results from a series of scaled laboratory experiments designed to isolate and explore four separate issues of relevance to the Supernovae (SN) mixing problem. The first experiment explores the effects of spherical divergence on the instability evolution. The second studies possibility of coupling between two spatially separated interfaces. The third compares quantifies the difference between instability growth in two and three dimensions. And the fourth begins to look at the evolution of an interface of more complicated modal content. The second goal of this work is to serve as a first rough assessment of the validity of numerical codes used for astrophysics. For each experiment, comparisons are made with numerical simulation, and the implications and relevance to the SN problem are assessed.