# Collective Absorption Dynamics and Enhancement in Deformed Targets

Ruhl, Hartmut and Mulser, Peter and Hain, Steffen and Cornolti, Fulvio and Macchi, Andrea (1998) Collective Absorption Dynamics and Enhancement in Deformed Targets. arXiv .

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## Abstract

SUMMARY The interaction of intense fs laser pulses with thin foils that have an imposed deformation is compared with thick targets that develop bow shocks. Both target types yield good absorption. Up to 80% absorption is obtained for a $0.2\mu m$ thick, 15 times over-dense foil at $4 \cdot 10^{18} W/cm^2$. A value of 50% is obtained for a $4 \mu m$ thick, 2 times over-dense thick target at $10^{18} W/cm^2$. For comparable extension and curvature of the laser-plasma interfaces absorption levels in both targets become similar. In both absorption scales weakly with intensity and density. Energy transport in thin foils and thick targets, however, is different.

Item Type: Article Imported from arXiv Area02 - Scienze fisiche > FIS/01 - Fisica sperimentale Dipartimenti (from 2013) > DIPARTIMENTO DI FISICA dott.ssa Sandra Faita 06 Aug 2013 10:44 06 Aug 2013 10:44 http://eprints.adm.unipi.it/id/eprint/1319

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