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A comparative study of Rayleigh-Taylor and Richtmyer-Meshkov instabilities in 2D and 3D in tantalum

Sternberger, Z. and Maddox, B. R. and Opachich, Y. P. and Wehrenberg, C. E. and Kraus, R. G. and Remington, B. A. and Randall, G. C. and Farrell, M. and Ravichandran, G. (2017) A comparative study of Rayleigh-Taylor and Richtmyer-Meshkov instabilities in 2D and 3D in tantalum. In: Shock Compression of Condensed Matter -- 2015. AIP Conference Proceedings. No.1793. American Institute of Physics , Melville, NY, Art. No. 110006. ISBN 978-0-7354-1457-0.

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Driving a shock wave through the interface between two materials with different densities can result in the Richtmyer-Meshkov or Rayleigh-Taylor instability and initial perturbations at the interface will grow. If the shock wave is sufficiently strong, the instability will lead to plastic flow at the interface. Material strength will reduce the amount of plastic flow and suppress growth. While such instabilities have been investigated in 2D, no studies of this phenomena have been performed in 3D on materials with strength. Initial perturbations to seed the hydrodynamic instability were coined into tantalum recovery targets. Two types of perturbations were used, two dimensional (2D) perturbations (hill and valley) and three-dimensional (3D) perturbations (egg crate pattern). The targets were subjected to dynamic loading using the Janus laser at the Jupiter Laser Facility. Shock pressures ranged from 50 GPa up to 150 GPa and were calibrated using VISAR drive targets.

Item Type:Book Section
Related URLs:
URLURL TypeDescription
Sternberger, Z.0000-0002-7612-673X
Opachich, Y. P.0000-0003-1432-3989
Kraus, R. G.0000-0003-2752-0121
Randall, G. C.0000-0002-8375-9041
Ravichandran, G.0000-0002-2912-0001
Additional Information:© 2017 AIP Publishing. Published Online: January 2017 Accepted: November 2016. The authors would like to thank the staff at the Jupiter Laser Facility at Lawrence Livermore National Laboratory for their help during our experimental campaign. This work was completed with the support of the NNSA through the HEDLP program, grant numbers DE-NA0001805 and DE-NA0001832.
Funding AgencyGrant Number
Department of Energy (DOE)DE-NA0001805
Department of Energy (DOE)DE-NA0001832
Series Name:AIP Conference Proceedings
Issue or Number:1793
Record Number:CaltechAUTHORS:20170119-133319310
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:73556
Deposited By: Ruth Sustaita
Deposited On:19 Jan 2017 23:28
Last Modified:09 Mar 2020 13:19

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