Strong stabilization of the Rayleigh-Taylor instability by material strength at Mbar pressures

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Experimental results showing significant reductions from classical in the Rayleigh-Taylor (RT) instability growth rate due to high pressure effective lattice viscosity are presented. Using a laser created ramped drive, vanadium samples are compressed and accelerated quasi-isentropically at {approx}1 Mbar pressures, while maintaining the sample in the solid-state. Comparisons with simulations and theory indicate that the high pressure, high strain rate conditions trigger a phonon drag mechanism, resulting in the observed high effective lattice viscosity and strong stabilization of the RT instability.

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Park, H S; Lorenz, K T; Cavallo, R M; Pollaine, S M; Prisbrey, S T; Rudd, R E et al. November 19, 2009.

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Experimental results showing significant reductions from classical in the Rayleigh-Taylor (RT) instability growth rate due to high pressure effective lattice viscosity are presented. Using a laser created ramped drive, vanadium samples are compressed and accelerated quasi-isentropically at {approx}1 Mbar pressures, while maintaining the sample in the solid-state. Comparisons with simulations and theory indicate that the high pressure, high strain rate conditions trigger a phonon drag mechanism, resulting in the observed high effective lattice viscosity and strong stabilization of the RT instability.

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PDF-file: 22 pages; size: 2.4 Mbytes

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  • Journal Name: Physics of Plasmas, vol. 17, n/a, May 3, 2010, pp. 056314; Journal Volume: 17

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  • Report No.: LLNL-JRNL-420715
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 1020334
  • Archival Resource Key: ark:/67531/metadc833880

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • November 19, 2009

Added to The UNT Digital Library

  • May 19, 2016, 3:16 p.m.

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  • Dec. 9, 2016, 7:22 p.m.

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Park, H S; Lorenz, K T; Cavallo, R M; Pollaine, S M; Prisbrey, S T; Rudd, R E et al. Strong stabilization of the Rayleigh-Taylor instability by material strength at Mbar pressures, article, November 19, 2009; Livermore, California. (digital.library.unt.edu/ark:/67531/metadc833880/: accessed November 24, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.