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Abstract

This paper presents studies on the linear, non-linear and turbulent evolution of the Rayleigh-Taylor instability (RTI) relevant to inertial confinement fusion ICF). An analytical expression is derived for the linear growth rate of the ablative RTI, taking into account the specific transport mechanism in the unstable layer. An agreement with the Takabe formula and preliminary 2-D numerical simulations is found. The success of ICF requires the linear growth rate of the RTI at the ablation front to be smaller than its classical value. In addition, the instability should not enter the turbulent regime. Studies on indirect-drive heavy-ion fusion targets are also reported. Gain curves for Hohlraum targets were generated analytically and progress in the study of spherical targets with a diffuse converter is discussed.

Additional information

Authors: ATZENI S, ENEA, Centro Ricerche Energia Frascati, Roma (IT);PIRIZ A R, ENEA, Centro Ricerche Energia Frascati, Roma (IT);WOUCHUK J G, ENEA, Centro Ricerche Energia Frascati, Roma (IT);GUERRIER A, ENEA, Centro Ricerche Energia Frascati, Roma (IT);GRAZIADEI S, ENEA, Centro Ricerche Energia Frascati, Roma (IT);TEMPORAL M, ENEA, Centro Ricerche Energia Frascati, Roma (IT)
Bibliographic Reference: Paper presented: 15th International Conference on Plasma Physics and Controlled Nuclear Fusion Research, Seville (ES), September 26 - October 1, 1994
Availability: Available from (1) as Paper EN 38618 ORA
Record Number: 199411302 / Last updated on: 1994-12-06
Category: PUBLICATION
Original language: en
Available languages: en