Studying successive shock effects on heavy-to-light instabilities
ORAL
Abstract
The Richtmyer-Meshkov instability of shocked interfaces is believed to be a major contributor to mix in shaped-pulse ICF capsules, where multiple shocks typically pass through the inner interfaces and converge near the center. Sending multiple successive shocks through a heavy-to-light interface can lead to distinct outcomes compared to either a single shock or a shock followed by reshock from the opposite direction. This can theoretically include partial or complete `freeze-out’ of the perturbation after the second shock, reducing total mix width. We review some of the theory of successively shocked heavy-to-light interfaces as previously developed by Mikaelian[1], and results from a recent planar halfraum-drive experiment which has verified some of these ideas.
[1] K O Mikaelian “Rayleigh-Taylor instabilities in stratified fluids,” Phys. Rev. A 26 2140 (1982)
[1] K O Mikaelian “Rayleigh-Taylor instabilities in stratified fluids,” Phys. Rev. A 26 2140 (1982)
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Presenters
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Forrest W Doss
Johns Hopkins University, Los Alamos National Laboratory, Los Alamos Natl Lab
Authors
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Forrest W Doss
Johns Hopkins University, Los Alamos National Laboratory, Los Alamos Natl Lab
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Elizabeth C Merritt
Los Alamos National Laboratory, Los Alamos Natl Lab
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Carlos A Di Stefano
Los Alamos National Laboratory, Los Alamos Natl Lab
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Harry F Robey
Los Alamos National Laboratory, LANL, Los Alamos Natl Lab
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Kirk A Flippo
Los Alamos Natl Lab, Los Alamos National Laboratory
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R. F Sacks
Los Alamos Natl Lab
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Alexander M Rasmus
Los Alamos National Laboratory, Los Alamos Natl Lab
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Joseph M Levesque
Los Alamos National Laboratory, Los Alamos Natl Lab