Please use this identifier to cite or link to this item:
|Title:||Collisionless shocks in laser-produced plasma generate monoenergetic high-energy proton beams|
Fonseca, R. A.
Silva, L. O.
|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”
|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|
Files in This Item:
|Haberberger 2012 Nature Physics.pdf||490.96 kB||Adobe PDF||View/Open Request a copy|
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.