Mechanism of growth reduction of the deceleration-phase ablative Rayleigh-Taylor instability.

Phys Rev E Stat Nonlin Soft Matter Phys

Dipartimento di Energetica, Università di Roma La Sapienza and INFM, Via Antonio Scarpa 14, I-00161 Rome, Italy.

Published: May 2003

The deceleration-phase (dp) ablative Rayleigh-Taylor instability (RTI) of igniting and nonigniting inertial fusion capsules is studied by high-resolution two-dimensional Lagrangian fluid simulations. It is found that growth reduction of the dp-RTI with respect to classical RTI results from the advection of perturbed fluid elements outside a thin unstable fluid layer. Within this layer, at fixed Lagrangian position, perturbations grow approximately classically.

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http://dx.doi.org/10.1103/PhysRevE.67.057401DOI Listing

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