Shock physics with the nova laser for ICF applications. Revision 1

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The physics of high pressure shocks plays a central role in Inertial Confinement Fusion (ICF). In indirect drive ICF, x-rays from a gold cavity (hohlraum) are used to ablatively drive a series of high pressure shocks into a spherical target (capsule). These shocks converge at the center, compressing the fuel and forming a hot dense core. The target performance, such as peak fuel density and temperature and neutron yield, depends critically on hock timing, and material compressibility. Accurate predictions of NIF target performance depends critically on shock timing and material compressibility. Current measurement techniques enable us to accurately determine shock ... continued below

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6 p.

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Hammel, B.A.; Cauble, R. & Celliers, P. December 1, 1995.

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Description

The physics of high pressure shocks plays a central role in Inertial Confinement Fusion (ICF). In indirect drive ICF, x-rays from a gold cavity (hohlraum) are used to ablatively drive a series of high pressure shocks into a spherical target (capsule). These shocks converge at the center, compressing the fuel and forming a hot dense core. The target performance, such as peak fuel density and temperature and neutron yield, depends critically on hock timing, and material compressibility. Accurate predictions of NIF target performance depends critically on shock timing and material compressibility. Current measurement techniques enable us to accurately determine shock timing in planar samples of abator material as a function of laser drive. Although this technique does not separately address uncertainties in material EOS and opacity, it does allow us to tune the laser drive until the desired shock timing is achieved. Experiments to directly address the EOS of D{sub 2} ice are planned to further increase the margin for ignition in current target designs.

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6 p.

Notes

INIS; OSTI as DE96006318

Source

  • American Physical Society biennial conference on shock compression of condensed matter, Seattle, WA (United States), 13-18 Aug 1995

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  • Other: DE96006318
  • Report No.: UCRL-JC--121637-Rev.1
  • Report No.: CONF-950846--74-Rev.1
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 204709
  • Archival Resource Key: ark:/67531/metadc668127

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  • December 1, 1995

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  • June 29, 2015, 9:42 p.m.

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  • Feb. 23, 2016, 12:09 p.m.

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Hammel, B.A.; Cauble, R. & Celliers, P. Shock physics with the nova laser for ICF applications. Revision 1, article, December 1, 1995; California. (digital.library.unt.edu/ark:/67531/metadc668127/: accessed August 22, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.