Ablative Stabilization of the Deceleration-Phase Rayleigh-Taylor Instability, control No. 2000-107 | Zendy

V. Lobatchev | Zendy; R. Betti | Zendy

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Ablative Stabilization of the Deceleration-Phase Rayleigh-Taylor Instability, control No. 2000-107

Author(s) -

V. Lobatchev,

R. Betti

Publication year - 2000

Publication title -

osti oai (u.s. department of energy office of scientific and technical information)

Language(s) - English

Resource type - Reports

DOI - 10.2172/765958

Subject(s) - rayleigh–taylor instability , instability , inertial confinement fusion , mechanics , physics , ignition system , cutoff , phase (matter) , rayleigh scattering , national ignition facility , materials science , plasma , optics , thermodynamics , nuclear physics , quantum mechanics

The growth rates of the deceleration-phase Rayleigh-Taylor instability for imploding inertial confinement fusion capsules are calculated and compared with the results of numerical simulations. It is found that the unstable spectrum and the growth rates are significantly reduced by the finite ablation flow at the shell's inner surface. For typical direct-drive capsules designed for the National Ignition Facility, the unstable spectrum exhibits a cutoff for {ell} {approx} 90

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