Laser-driven shock acceleration of ion beams from spherical mass-limited targets.
Phys Rev Lett
; 102(9): 095002, 2009 Mar 06.
Article
in En
| MEDLINE
| ID: mdl-19392529
ABSTRACT
We report on experimental studies of ion acceleration from spherical targets of diameter 15 microm irradiated by ultraintense (1x10(20) W/cm2) pulses from a 20-TW Tisapphire laser system. A highly directed proton beam with plateau-shaped spectrum extending to energies up to 8 MeV is observed in the laser propagation direction. This beam arises from acceleration in a converging shock launched by the laser, which is confirmed by 3-dimensional particle-in-cell simulations. The temporal evolution of the shock-front curvature shows excellent agreement with a two-dimensional radiation pressure model.
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Collection:
01-internacional
Database:
MEDLINE
Language:
En
Journal:
Phys Rev Lett
Year:
2009
Document type:
Article
Affiliation country:
Alemania