### 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 |
---|---|

Pages (from-to) | 1467-1476 |

Number of pages | 10 |

Journal | Physics of Plasmas |

Volume | 5 |

Issue number | 5 PART 1 |

Publication status | Published - 1998 |

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### ASJC Scopus subject areas

- Physics and Astronomy(all)
- Condensed Matter Physics

### Cite this

*Physics of Plasmas*,

*5*(5 PART 1), 1467-1476.

**Scaling laws of the Rayleigh-Taylor ablation front mixing zone evolution in inertial confinement fusion.** / Oron, Dan; Alon, U.; Shvarts, D.

Research output: Contribution to journal › Article

*Physics of Plasmas*, vol. 5, no. 5 PART 1, pp. 1467-1476.

}

TY - JOUR

T1 - Scaling laws of the Rayleigh-Taylor ablation front mixing zone evolution in inertial confinement fusion

AU - Oron, Dan

AU - Alon, U.

AU - Shvarts, D.

PY - 1998

Y1 - 1998

N2 - 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 αgt2 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.

AB - 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 αgt2 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.

UR - http://www.scopus.com/inward/record.url?scp=0001480085&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0001480085&partnerID=8YFLogxK

M3 - Article

VL - 5

SP - 1467

EP - 1476

JO - Physics of Plasmas

JF - Physics of Plasmas

SN - 1070-664X

IS - 5 PART 1

ER -