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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| Veröffentlicht in: | Physical review letters 2006-07, Vol.97 (3), p.035002-035002, Article 035002 |
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| container_title | Physical review letters |
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| creator | Abéguilé, F Boudesocque-Dubois, C Clarisse, J-M Gauthier, S Saillard, Y |
| 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. |
| doi_str_mv | 10.1103/PhysRevLett.97.035002 |
| format | Article |
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| identifier | ISSN: 0031-9007 |
| ispartof | Physical review letters, 2006-07, Vol.97 (3), p.035002-035002, Article 035002 |
| issn | 0031-9007 1079-7114 |
| language | eng |
| recordid | cdi_osti_scitechconnect_20860536 |
| source | American Physical Society Journals |
| 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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