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Article Dans Une Revue Physics of Plasmas Année : 2017

Shock generation comparison with planar and hemispherical targets in shock ignition relevant experiment

Résumé

We performed an experiment on the " Ligne d'Intégration Laser " facility to produce strong shocks with plasma conditions relevant for the Shock Ignition approach to Inertial Confinement Fusion. Two kinds of target have been used: planar and hemispherical. We observe an increase of the shock velocity in hemispherical geometry, which entails a fairly planar shock despite the Gaussian focal spot. Numerical results reproduce in the successful way the shock dynamics in the two cases, indicating, for laser intensities around 1.5x1015 W/cm2 at 3ω, an ablation pressure of (90 ± 20) Mbar and (120 ± 20) Mbar in planar and hemispherical geometry respectively.
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Dates et versions

hal-01828176 , version 1 (03-07-2018)

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S. D. Baton, E. Le Bel, S. Brygoo, X. Ribeyre, C. Rousseaux, et al.. Shock generation comparison with planar and hemispherical targets in shock ignition relevant experiment. Physics of Plasmas, 2017, 24 (9), pp.092708. ⟨10.1063/1.4989525⟩. ⟨hal-01828176⟩
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