Proton acceleration by moderately relativistic laser pulses interacting with solid density targets - ENSTA Paris - École nationale supérieure de techniques avancées Paris Accéder directement au contenu
Article Dans Une Revue New Journal of Physics Année : 2010

Proton acceleration by moderately relativistic laser pulses interacting with solid density targets

Résumé

We use two-dimensional (2D) particle-in-cell simulations to study the interaction of short-duration, moderately relativistic laser pulses with sub-micrometric dense hydrogen plasma slabs. Particular attention is devoted to proton acceleration by the target normal sheath mechanism. We observed that improved acceleration due to relativistic transparency of the target is unlikely for the shortest pulses, even for ultra-thin (~10 nm) targets. This mechanism would require either longer pulses or higher laser intensities. As the target density and thickness, pulse length, duration and polarization are varied, we see clear relationships between laser irradiance, hot electron temperature and peak proton energy. All these explain why, at a given incident laser energy level, the highest proton energy is not always obtained for the shortest-duration, highest-intensity pulse.

Mots clés

Dates et versions

hal-00498393 , version 1 (07-07-2010)

Identifiants

Citer

Eric Lefebvre, Laurent Gremillet, Anna Lévy, Rachel Nuter, Patrizio Antici, et al.. Proton acceleration by moderately relativistic laser pulses interacting with solid density targets. New Journal of Physics, 2010, 12 (4), pp.045017. ⟨10.1088/1367-2630/12/4/045017⟩. ⟨hal-00498393⟩
240 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More