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Title: Laser-driven shock acceleration of monoenergetic ion beams
Authors: Fiuza, F.
Stockem, A.
Boella, E.
Fonseca, R. A.
Silva, L. O.
Haberberger, D.
Tochitsky, S.
Gong, C.
Mori, W. B.
Joshi, C.
Issue Date: 2012
Publisher: American Physical Society
Abstract: We show that monoenergetic ion beams can be accelerated by moderate Mach number collisionless, electrostatic shocks propagating in a long scale-length exponentially decaying plasma profile. Strong plasma heating and density steepening produced by an intense laser pulse near the critical density can launch such shocks that propagate in the extended plasma at high velocities. The generation of a monoenergetic ion beam is possible due to the small and constant sheath electric field associated with the slowly decreasing density profile. The conditions for the acceleration of high-quality, energetic ion beams are identified through theory and multidimensional particle-in-cell simulations. The scaling of the ion energy with laser intensity shows that it is possible to generate similar to 200 MeV proton beams with state-of-the-art 100 TW class laser systems.
Description: WOS:000311284200008
Peer reviewed: yes
DOI: 10.1103/PhysRevLett.109.215001
ISSN: 0031-9007
Appears in Collections:CTI-RI - Artigos em revistas científicas internacionais com arbitragem científica

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