Journal
SHOCK COMPRESSION OF CONDENSED MATTER - 2011, PTS 1 AND 2
Volume 1426, Issue -, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3686446
Keywords
Ejecta; Ejecta modeling; Richtmyer-Meshkov instability; Proton Radiograhy
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We present experimental results supporting physics based ejecta model development, where we assume ejecta form as a special limiting case of a Richtmyer-Meshkov (RM) instability with Atwood number A = -1. We present and use data to test established RM spike and bubble growth rate theory through application of modern laser Doppler velocimetry techniques applied in a novel manner to coincidentally measure bubble and spike velocities from shocked metals. We also explore the link of ejecta formation from a solid material to its plastic flow stress at high-strain rates (10(7)/s) and high strains (700%).
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