Calculations of double cylinder implosions at OMEGA

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Foam-filled double cylinder targets have been imploded by the OMEGA laser at the University of Rochester. A marker layer of heavier material is placed between the foam and the outside ablator. The marker layer is hydrodynamically unstable when a strong shock passes through both these interfaces and the marker layer material mixes into the foam and the ablator. These experiments thus measure mix in the compressible, convergent, miscible, strong-shock regime. With double cylinder targets, the initial shock converges on the central cylinder and then rebounds and expands. The shock is predicted to create even more mixing of the marker layer ... continued below

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17 p.

Creation Information

Delamater, N. D. (Norman D.); R.), Magelssen G. R. (Glenn; Scott, J. M. (John M.); Batha, S. H. (Steven H.); Lanier, N. E. (Nicholas E.); Barnes, C. W. (Christopher, W.) et al. January 1, 2002.

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Foam-filled double cylinder targets have been imploded by the OMEGA laser at the University of Rochester. A marker layer of heavier material is placed between the foam and the outside ablator. The marker layer is hydrodynamically unstable when a strong shock passes through both these interfaces and the marker layer material mixes into the foam and the ablator. These experiments thus measure mix in the compressible, convergent, miscible, strong-shock regime. With double cylinder targets, the initial shock converges on the central cylinder and then rebounds and expands. The shock is predicted to create even more mixing of the marker layer as it traverses the previously mixed region. The strength of the reflected shock can be varied by changing the materials in the inner cylinder. Calculations of these implosions using the AMR code, RAGE, are presented for the several target designs. The 2-d calculations give the hydrodynamic evolution of the implosion, shock timings, and the growth of the mix width. The calculations include the effects of surface roughness in the marker layer. Simulated radiographs of the cylindrical implosions are also shown.

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17 p.

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  • Submitted to: Talk at APS, Div. of Plasma Physics Annual Meeting, Orlando, FL, November 11-15, 2002

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  • Report No.: LA-UR-02-6962
  • Grant Number: none
  • Office of Scientific & Technical Information Report Number: 976430
  • Archival Resource Key: ark:/67531/metadc934342

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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.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • January 1, 2002

Added to The UNT Digital Library

  • Nov. 13, 2016, 7:26 p.m.

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  • Dec. 9, 2016, 10:55 p.m.

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Delamater, N. D. (Norman D.); R.), Magelssen G. R. (Glenn; Scott, J. M. (John M.); Batha, S. H. (Steven H.); Lanier, N. E. (Nicholas E.); Barnes, C. W. (Christopher, W.) et al. Calculations of double cylinder implosions at OMEGA, article, January 1, 2002; United States. (digital.library.unt.edu/ark:/67531/metadc934342/: accessed October 22, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.