Dynamic stabilization of Rayleigh-Taylor instability of ablation fronts in inertial confinement fusion

Di Lucchio, Laura (2012) Dynamic stabilization of Rayleigh-Taylor instability of ablation fronts in inertial confinement fusion, [Dissertation thesis], Alma Mater Studiorum Università di Bologna. Dottorato di ricerca in NON SPECIFICATO, 24 Ciclo. DOI 10.6092/unibo/amsdottorato/4256.
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Abstract

One of the most important problems in inertial confinement fusion is how to find a way to mitigate the onset of the Rayleigh-Taylor instability which arises in the ablation front during the compression. In this thesis it is studied in detail the possibility of using for such a purpose the well-known mechanism of dynamic stabilization, already applied to other dynamical systems such as the inverted pendulum. In this context, a periodic acceleration superposed to the background gravity generates a vertical vibration of the ablation front itself. The effects of different driving modulations (Dirac deltas and square waves) are analyzed from a theoretical point of view, with a focus on stabilization of ion beam driven ablation fronts, and a comparison is made, in order to look for optimization.

Abstract
Tipologia del documento
Tesi di dottorato
Autore
Di Lucchio, Laura
Supervisore
Scuola di dottorato
Scienze matematiche, fisiche ed astronomiche
Ciclo
24
Coordinatore
Settore disciplinare
Settore concorsuale
Parole chiave
Rayleigh-Taylor instability, dynamic stabilization, inertial confinement fusion
URN:NBN
DOI
10.6092/unibo/amsdottorato/4256
Data di discussione
2 Marzo 2012
URI

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