Ignition Capsules with Aerogel-Supported Liquid DT Fuel For The National Ignition Facility

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For high repetition-rate fusion power plant applications, capsules with aerogel-supported liquid DT fuel can have much reduced fill time compared to {beta}-layering a solid DT fuel layer. The melting point of liquid DT can be lowered once liquid DT is embedded in an aerogel matrix, and the DT vapor density is consequently closer to the desired density for optimal capsule design requirement. We present design for NIF-scale aerogel-filled capsules based on 1-D and 2-D simulations. An optimal configuration is obtained when the outer radius is increased until the clean fuel fraction is within 65-75% at peak velocity. A scan (in ... continued below

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Ho, D D; Salmonson, J D; Clark, D S; Lindl, J D; Haan, S W; Amendt, P et al. October 25, 2011.

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For high repetition-rate fusion power plant applications, capsules with aerogel-supported liquid DT fuel can have much reduced fill time compared to {beta}-layering a solid DT fuel layer. The melting point of liquid DT can be lowered once liquid DT is embedded in an aerogel matrix, and the DT vapor density is consequently closer to the desired density for optimal capsule design requirement. We present design for NIF-scale aerogel-filled capsules based on 1-D and 2-D simulations. An optimal configuration is obtained when the outer radius is increased until the clean fuel fraction is within 65-75% at peak velocity. A scan (in ablator and fuel thickness parameter space) is used to optimize the capsule configurations. The optimized aerogel-filled capsule has good low-mode robustness and acceptable high-mode mix.

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PDF-file: 6 pages; size: 6 Mbytes

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  • Presented at: IFSA, Bordeaux, France, Sep 12 - Sep 16, 2011

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  • Report No.: LLNL-PROC-510251
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 1035284
  • Archival Resource Key: ark:/67531/metadc838135

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  • October 25, 2011

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  • May 19, 2016, 3:16 p.m.

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  • Nov. 29, 2016, 1:54 p.m.

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Ho, D D; Salmonson, J D; Clark, D S; Lindl, J D; Haan, S W; Amendt, P et al. Ignition Capsules with Aerogel-Supported Liquid DT Fuel For The National Ignition Facility, article, October 25, 2011; Livermore, California. (digital.library.unt.edu/ark:/67531/metadc838135/: accessed November 19, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.