Assessing Mix Layer Amplitude in 3D Decelerating Interface Experiments |
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| Authors: | C C Kuranz R P Drake T L Donajowski K K Dannenberg M Grosskopf D J Kremer C Krauland D C Marion H F Robey B A Remington J F Hansen B E Blue J Knauer T Plewa N Hearn |
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| Institution: | (1) University of Michigan, Ann Arbor, MI, USA;(2) Lawrence Livermore National Laboratory, Livermore, CA, USA;(3) University of Rochester, Rochester, NY, USA;(4) University of Chicago, Chicago, IL, USA |
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| Abstract: | We present data from recent high-energy-density laboratory experiments designed to explore the Rayleigh–Taylor instability
under conditions relevant to supernovae. The Omega laser is used to create a blast wave structure that is similar to that
of the explosion phase of a core-collapse supernova. An unstable interface is shocked and then decelerated by the planar blast
wave, producing Rayleigh–Taylor growth. Recent experiments were performed using dual, side-on, x-ray radiography to observe
a 3D “egg crate” mode and an imposed, longer-wavelength, sinusoidal mode as a seed perturbation. This paper explores the method
of data analysis and accurately estimating the position of important features in the data. |
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| Keywords: | Rayleigh-Taylor instability Supernova Laboratory astrophysics |
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