Comparisons of Line Emission from ICF Capsules in 2- and 3-Dimensional Simulations

Langer, S H; Scott, H A; Marinak, M M; Landen, O L

Title: Comparisons of Line Emission from ICF Capsules in 2- and 3-Dimensional Simulations

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Abstract

Hydrodynamic instabilities reduce the yield in inertial confinement fusion (ICF) implosions. Line emission from dopants placed in the capsule can be used to diagnose the extent of the instabilities. This paper presents the results of a large number of 2D simulations and a few 3D simulations of line emission from argon in the DH fuel and titanium placed in the inner layers of the plastic shell of a NOVA ICF capsule. The Simulations have been compared to NOVA experimental data on the ratio of argon Ly-{beta} to titanium He-{alpha}, the relative strength of titanium He-{alpha} and its satellites, and the strength of the continuum near titanium He-{alpha}. The simulations are in reasonable agreement with the data, but the amount of data is small enough that it is hard to make precise comparisons. Two different atomic databases have been used in a first attempt to determine the set of configurations required to properly model the titanium emission.

Authors:: Langer, S H; Scott, H A; Marinak, M M; Landen, O L

Publication Date:: Sat Nov 09 00:00:00 EST 2002

Research Org.:: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

Sponsoring Org.:: US Department of Energy (US)

OSTI Identifier:: 15002148

Report Number(s):: UCRL-JC-148664
TRN: US200408%%143

DOE Contract Number:: W-7405-ENG-48

Resource Type:: Conference

Resource Relation:: Conference: 10th International Workshop on Radiative Properties of Hot Dense Matter, St. Malo (FR), 09/16/2002--09/20/2002; Other Information: PBD: 9 Nov 2002

Country of Publication:: United States

Language:: English

Subject:: 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ARGON; HYDRODYNAMICS; IMPLOSIONS; INERTIAL CONFINEMENT; PLASTICS; SATELLITES; TITANIUM

Citation Formats


                    Langer, S H, Scott, H A, Marinak, M M, and Landen, O L. Comparisons of Line Emission from ICF Capsules in 2- and 3-Dimensional Simulations.  United States: N. p., 2002. 
        Web.

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                    Langer, S H, Scott, H A, Marinak, M M, & Landen, O L. Comparisons of Line Emission from ICF Capsules in 2- and 3-Dimensional Simulations.  United States.

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                    Langer, S H, Scott, H A, Marinak, M M, and Landen, O L. 2002.  
        "Comparisons of Line Emission from ICF Capsules in 2- and 3-Dimensional Simulations".  United States.  https://www.osti.gov/servlets/purl/15002148.

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@article{osti_15002148,

  title        = {Comparisons of Line Emission from ICF Capsules in 2- and 3-Dimensional Simulations},

  author       = {Langer, S H and Scott, H A and Marinak, M M and Landen, O L},

  abstractNote = {Hydrodynamic instabilities reduce the yield in inertial confinement fusion (ICF) implosions. Line emission from dopants placed in the capsule can be used to diagnose the extent of the instabilities. This paper presents the results of a large number of 2D simulations and a few 3D simulations of line emission from argon in the DH fuel and titanium placed in the inner layers of the plastic shell of a NOVA ICF capsule. The Simulations have been compared to NOVA experimental data on the ratio of argon Ly-{beta} to titanium He-{alpha}, the relative strength of titanium He-{alpha} and its satellites, and the strength of the continuum near titanium He-{alpha}. The simulations are in reasonable agreement with the data, but the amount of data is small enough that it is hard to make precise comparisons. Two different atomic databases have been used in a first attempt to determine the set of configurations required to properly model the titanium emission.},

  doi          = {},

  url          = {https://www.osti.gov/biblio/15002148},
  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {Sat Nov 09 00:00:00 EST 2002},

  month        = {Sat Nov 09 00:00:00 EST 2002}

}

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