NIF capsule design update

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Description

We describe several ignition capsule designs, for use in the National Ignition Facility. We will compare these designs for ablator efficiency, ignition margin, implosion and stability performance. This study includes capsule designs driven by x-ray drive profiles with both 300 eV and 250 eV peak temperatures. All of the 300 eV designs are tuned to implode the DT fuel in a nearly identical manner. Capsule designs consist of an ablator material (CH with Br dopant; Be with Cu dopant; and B{sub 4}C) encasing a layer of solid DT. The dopants alter material opacities sufficiently to (1) shield the DT fuel ... continued below

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8 p.

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Dittrich, T.R.; Haan, S.W.; Pollaine, S.; Burnham, A.K. & Strobel, G.L. October 1, 1996.

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Description

We describe several ignition capsule designs, for use in the National Ignition Facility. We will compare these designs for ablator efficiency, ignition margin, implosion and stability performance. This study includes capsule designs driven by x-ray drive profiles with both 300 eV and 250 eV peak temperatures. All of the 300 eV designs are tuned to implode the DT fuel in a nearly identical manner. Capsule designs consist of an ablator material (CH with Br dopant; Be with Cu dopant; and B{sub 4}C) encasing a layer of solid DT. The dopants alter material opacities sufficiently to (1) shield the DT fuel from preheat effects; and (2) develop an ablation front density profile favorable to implosion stability. B{sub 4}C has sufficient opacity at 300 eV that a dopant is not necessary. Issues relating to material properties and fabrication will be described.

Physical Description

8 p.

Notes

INIS; OSTI as DE97050788

Source

  • 11. target fabrication specialist meeting, Orcas Island, WA (United States), 8-12 Sep 1996

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  • Other: DE97050788
  • Report No.: UCRL-JC--124913
  • Report No.: CONF-9609225--1
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 460764
  • Archival Resource Key: ark:/67531/metadc674621

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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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  • October 1, 1996

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  • July 25, 2015, 2:21 a.m.

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  • Feb. 17, 2016, 2:47 p.m.

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Dittrich, T.R.; Haan, S.W.; Pollaine, S.; Burnham, A.K. & Strobel, G.L. NIF capsule design update, article, October 1, 1996; California. (digital.library.unt.edu/ark:/67531/metadc674621/: accessed December 17, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.