Self-consistent numerical dispersion relation of the ablative Rayleigh-Taylor instability of double ablation fronts in inertial confinement fusion

Journal Article · Fri Jun 15 00:00:00 EDT 2012 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.4729725· OSTI ID:22072473

Yanez, C ^[1]; Sanz, J ^[2]; Olazabal-Loume, M ^[1]

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1. CEA, CNRS, CELIA (Centre Lasers Intenses et Applications), University of Bordeaux, UMR5107, F-33400 Talence (France)
2. ETSI Aeronauticos, Universidad Politecnica de Madrid, Madrid 28040 (Spain)

The linear stability analysis of accelerated double ablation fronts is carried out numerically with a self-consistent approach. Accurate hydrodynamic profiles are taken into account in the theoretical model by means of a fitting parameters method using 1D simulation results. Numerical dispersion relation is compared to an analytical sharp boundary model [Yanez et al., Phys. Plasmas 18, 052701 (2011)] showing an excellent agreement for the radiation dominated regime of very steep ablation fronts, and the stabilization due to smooth profiles. 2D simulations are presented to validate the numerical self-consistent theory.

• OSTI ID: 22072473
• Journal Information: Physics of Plasmas, Vol. 19, Issue 6; Other Information: (c) 2012 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ABLATION
DISPERSION RELATIONS
INERTIAL CONFINEMENT
PLASMA SIMULATION
RAYLEIGH-TAYLOR INSTABILITY
STABILIZATION