Hydrodynamic stability of ablation fronts: linear perturbation of a self-similar solution

Carine Boudesocque-Dubois; Jean-Marie Clarisse; Serge Gauthier

doi:10.1117/12.425598

23 April 2001 Hydrodynamic stability of ablation fronts: linear perturbation of a self-similar solution

Carine Boudesocque-Dubois, Jean-Marie Clarisse, Serge Gauthier

Proceedings Volume 4424, ECLIM 2000: 26th European Conference on Laser Interaction with Matter; (2001) https://doi.org/10.1117/12.425598
Event: 26th European Conference on Laser Interaction with Matter (ECLIM 2000), 2000, Prague, Czech Republic

Abstract

As is well-known, the efficiency of pellet implosions in inertial confinement fusion is strongly limited by several hydrodynamic instabilities. Among them, the ablation front instability plays a major role. Being the object of a continuing interest since the pioneering works of the 1970s, this instability is often referred to as the 'ablative Rayleigh-Taylor instability'. However, due to the physical processes in effect, this instability is probably closer to flame front instabilities than to classical Rayleigh-Taylor as stressed by Bychkov et al. Models proposed for this instability almost always assume steady flow, either using discontinuous thermal front approximation or accounting for thermal diffusion. Low Mach number approximation for which the unperturbed pressure profile is uniform, is also commonly used.

Citation Download Citation

Carine Boudesocque-Dubois, Jean-Marie Clarisse, and Serge Gauthier "Hydrodynamic stability of ablation fronts: linear perturbation of a self-similar solution", Proc. SPIE 4424, ECLIM 2000: 26th European Conference on Laser Interaction with Matter, (23 April 2001); https://doi.org/10.1117/12.425598

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