Abstract
The ignition of laser-initiated inertial confined fusion (ICF) targets is still not reached, despite considerable efforts taken in this direction. The exact physical reasons for this failure are still questionable, but there are significant hints for the significant role of uncontrollable hydrodynamics instabilities, that prevent ignition. Many papers are devoted to such instabilities, special attention is paid to the Rayleigh-Taylor and Ritchmeyer–Meshkov instabilities of accelerated perturbed interfaces. In this paper we consider an alternative variant, when the interface is initially smooth and perturbations are given inside of one medium. During acceleration the perturbations are carried from medium interior to the interface even if conditions for the Rayleigh–Taylor instability are not fulfilled. This initiates the instability and mediums mixing. The effect may be important for ICF targets, where it is crucial to support target symmetry and purity of each layer during compression.
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