Hydrodynamick instabilities on ICF capsules

Haan, S W

Title: Hydrodynamick instabilities on ICF capsules

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Abstract

This article summarizes our current understanding of hydrodynamic instabilities as relevant to ICF. First we discuss classical, single mode Rayleigh-Taylor instability, and nonlinear effects in the evolution of a single mode. Then we discuss multimode systems, considering: (1) the onset of nonlinearity; (2) a second order mode coupling theory for weakly nonlinear effects, and (3) the fully nonlinear regime. Two stabilization mechanisms relevant to ICF are described next: gradient scale length and convective stabilization. Then we describe a model which is meant to estimate the weakly nonlinear evolution of multi-mode systems as relevant to ICF, given the short-wavelength stabilization. Finally, we discuss the relevant code simulation capability, and experiments. At this time we are quite optimistic about our ability to estimate instability growth on ICF capsules, but further experiments and simulations are needed to verify the modeling. 52 refs.

Authors:: Haan, S W

Publication Date:: Fri Jun 07 00:00:00 EDT 1991

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

Sponsoring Org.:: USDOE; USDOE, Washington, DC (United States)

OSTI Identifier:: 5439994

Report Number(s):: UCRL-JC-107592; CONF-9103199-1
ON: DE91017542

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

Resource Type:: Conference

Resource Relation:: Conference: Lecture series on inertial fusion at Princeton University, Princeton, NJ (United States), Mar 1991

Country of Publication:: United States

Language:: English

Subject:: 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ICF DEVICES; RAYLEIGH-TAYLOR INSTABILITY; COMPUTERIZED SIMULATION; INSTABILITY GROWTH RATES; NONLINEAR PROBLEMS; STABILIZATION; TARGETS; INSTABILITY; SIMULATION; THERMONUCLEAR DEVICES; 700208* - Fusion Power Plant Technology- Inertial Confinement Technology

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                    Haan, S W. Hydrodynamick instabilities on ICF capsules.  United States: N. p., 1991. 
        Web.

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                    Haan, S W. Hydrodynamick instabilities on ICF capsules.  United States.

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                    Haan, S W. 1991.  
        "Hydrodynamick instabilities on ICF capsules".  United States.  https://www.osti.gov/servlets/purl/5439994.

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@article{osti_5439994,

  title        = {Hydrodynamick instabilities on ICF capsules},

  author       = {Haan, S W},

  abstractNote = {This article summarizes our current understanding of hydrodynamic instabilities as relevant to ICF. First we discuss classical, single mode Rayleigh-Taylor instability, and nonlinear effects in the evolution of a single mode. Then we discuss multimode systems, considering: (1) the onset of nonlinearity; (2) a second order mode coupling theory for weakly nonlinear effects, and (3) the fully nonlinear regime. Two stabilization mechanisms relevant to ICF are described next: gradient scale length and convective stabilization. Then we describe a model which is meant to estimate the weakly nonlinear evolution of multi-mode systems as relevant to ICF, given the short-wavelength stabilization. Finally, we discuss the relevant code simulation capability, and experiments. At this time we are quite optimistic about our ability to estimate instability growth on ICF capsules, but further experiments and simulations are needed to verify the modeling. 52 refs.},

  doi          = {},

  url          = {https://www.osti.gov/biblio/5439994},
  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {Fri Jun 07 00:00:00 EDT 1991},

  month        = {Fri Jun 07 00:00:00 EDT 1991}

}

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