Utilize este identificador para referenciar este registo:
http://hdl.handle.net/10071/7103
Autoria: | Haberberger, D. Tochitsky, S. Fiuza, F. Gong, C. Fonseca, R. A. Silva, L. O. Mori, W. Joshi, C. |
Data: | 2012 |
Título próprio: | Collisionless shocks in laser-produced plasma generate monoenergetic high-energy proton beams |
Volume: | 8 |
Número: | 1 |
Paginação: | 95-99 |
ISSN: | 1745-2473 |
Resumo: | 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. |
Arbitragem científica: | Sim |
Acesso: | Acesso Embargado |
Aparece nas coleções: | CTI-RI - Artigos em revistas científicas internacionais com arbitragem científica |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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Haberberger 2012 Nature Physics.pdf Restricted Access | 490,96 kB | Adobe PDF | Ver/Abrir Request a copy |
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