## Abstract

A theoretical model for the ablatively driven Rayleigh-Taylor (RT) instability single-mode and multimode mixing fronts is presented. The effect of ablation is approximately included in a Layzer-type potential flow model, yielding the description of both the single-mode evolution and the two-bubble nonlinear competition. The reduction factor of the linear growth rate due to ablative stabilization obtained by the model is similar to the Takabe formula. The single-bubble terminal velocity is found to be similarly reduced by ablation, in good agreement with numerical simulations. Two-bubble competition is calculated, and a statistical mechanics model for multimode fronts is presented. The asymptotic ablation correction to the classical RT αgt^{2} mixing zone growth law is derived. The effect of ablative stabilization on the allowed in-flight aspect ratio of inertial confinement fusion pellets is estimated using the results of the statistical mechanics model.

Original language | English |
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Pages (from-to) | 1467-1476 |

Number of pages | 10 |

Journal | Physics of Plasmas |

Volume | 5 |

Issue number | 5 PART 1 |

Publication status | Published - 1998 |

## ASJC Scopus subject areas

- Physics and Astronomy(all)
- Condensed Matter Physics