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http://hdl.handle.net/10071/7103
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Title: Collisionless shocks in laser-produced plasma generate monoenergetic high-energy proton beams
Authors: Haberberger, D.
Tochitsky, S.
Fiuza, F.
Gong, C.
Fonseca, R. A.
Silva, L. O.
Mori, W.
Joshi, C.
Issue Date: 2012
Publisher: Nature Publishing Group
Abstract: Compact and affordable ion accelerators based on laser-produced plasmas have potential applications in many fields of science and medicine. However, the requirement of producing focusable, narrow-energy-spread, energetic beams has proved to be challenging. Here we demonstrate that laser-driven collisionless shocks can accelerate proton beams to similar to 20MeV with extremely narrow energy spreads of about 1% and low emittances. This is achieved using a linearly polarized train of multiterawatt CO(2) laser pulses interacting with a gas-jet target. Computer simulations show that laser-heated electrons launch a collisionless shock that overtakes and reflects the protons in the slowly expanding hydrogen plasma, resulting in a narrow energy spectrum. Simulations predict the production of similar to 200MeV protons needed for radiotherapy by using current laser technology. These results open a way for developing a compact and versatile, high-repetition-rate ion source for medical and other applications.
Description: WOS:000298423000023 (Nº de Acesso Web of Science)
“Prémio Científico ISCTE-IUL 2013”
Peer reviewed: Sim
URI: https://ciencia.iscte-iul.pt/public/pub/id/11207
http://hdl.handle.net/10071/7103
ISSN: 1745-2473
Publisher version: The definitive version is available at: http://dx.doi.org/10.1038/nphys2130
Appears in Collections:CTI-RI - Artigos em revistas científicas internacionais com arbitragem científica

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