Exploring the Limits to NIF Capsule Coupling

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Our original ignition ''point designs'' (circa 1992) for the National Ignition Facility (NIF) were made energetically conservative to provide margin for uncertainties in laser absorption, x-ray conversion efficiency and hohlraum-capsule coupling. Since that time, extensive experiments on Nova and Omega and their related analysis indicate that NIF coupling efficiency may be almost ''as good as we could hope for''. Given close agreement between experiment and theory/modeling, we can credibly explore target enhancements which couple more of NIF's energy to an ignition capsule. We find that 3-4X increases in absorbed capsule energy appear possible, providing a potentially more robust target and ... continued below

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4,600 Kilobytes pages

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Suter, L.; Rothenberg, J.; Munro, D.; Van Wonterghem, B. & Haan, S. November 3, 1999.

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Our original ignition ''point designs'' (circa 1992) for the National Ignition Facility (NIF) were made energetically conservative to provide margin for uncertainties in laser absorption, x-ray conversion efficiency and hohlraum-capsule coupling. Since that time, extensive experiments on Nova and Omega and their related analysis indicate that NIF coupling efficiency may be almost ''as good as we could hope for''. Given close agreement between experiment and theory/modeling, we can credibly explore target enhancements which couple more of NIF's energy to an ignition capsule. We find that 3-4X increases in absorbed capsule energy appear possible, providing a potentially more robust target and {approx}10X increase in capsule yield.

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4,600 Kilobytes pages

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  • 41st Annual Meeting of the Division of Plasma Physics, Seattle, WA (US), 11/15/1999--11/19/1999

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  • Report No.: UCRL-JC-136319
  • Grant Number: W-7405-Eng-48
  • Office of Scientific & Technical Information Report Number: 791441
  • Archival Resource Key: ark:/67531/metadc742297

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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 3, 1999

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  • Oct. 19, 2015, 7:39 p.m.

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  • May 6, 2016, 1:21 p.m.

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Suter, L.; Rothenberg, J.; Munro, D.; Van Wonterghem, B. & Haan, S. Exploring the Limits to NIF Capsule Coupling, article, November 3, 1999; California. (digital.library.unt.edu/ark:/67531/metadc742297/: accessed April 22, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.