Linear perturbation amplification in self-similar ablation flows of inertial confinement fusion

Exact similarity solutions for inviscid compressible ablative flows in slab symmetry with nonlinear heat conduction are proposed for studying unsteadiness and compressibility effects on the hydrodynamic stability of ablation fronts relevant to inertial confinement fusion. Both the similarity solutio...

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Published in:Physical review letters 2006-07, Vol.97 (3), p.035002-035002, Article 035002
Main Authors: Abéguilé, F, Boudesocque-Dubois, C, Clarisse, J-M, Gauthier, S, Saillard, Y
Format: Article
Language:English
Subjects:
ABLATION
AMPLIFICATION
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
COMPRESSIBILITY
EXACT SOLUTIONS
INERTIAL CONFINEMENT
LASERS
MATERIALS SCIENCE
MODULATION
NONLINEAR PROBLEMS
PERTURBATION THEORY
SYMMETRY
THERMAL CONDUCTION
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cited_by cdi_FETCH-LOGICAL-c335t-aa26df6c0325e3d4aa56a1e9d289320ff892a612e3d1b2f0634459d4dc2093b73
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container_title Physical review letters
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creator Abéguilé, F
Boudesocque-Dubois, C
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description Exact similarity solutions for inviscid compressible ablative flows in slab symmetry with nonlinear heat conduction are proposed for studying unsteadiness and compressibility effects on the hydrodynamic stability of ablation fronts relevant to inertial confinement fusion. Both the similarity solutions and their linear perturbations are numerically computed with a dynamical multidomain Chebyshev pseudospectral method. Herewith the first analysis of laser-imprinting based on a dynamic solution is presented, showing that maximum perturbation amplification occurs for a laser-intensity modulation of zero transverse wave number, with growth dominated by the mean flow stretching.
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subjects ABLATION
AMPLIFICATION
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
COMPRESSIBILITY
EXACT SOLUTIONS
INERTIAL CONFINEMENT
LASERS
MATERIALS SCIENCE
MODULATION
NONLINEAR PROBLEMS
PERTURBATION THEORY
SYMMETRY
THERMAL CONDUCTION
title Linear perturbation amplification in self-similar ablation flows of inertial confinement fusion
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