Scientific Results

Toward high-energy laser-driven ion beams: Nanostructured double-layer targets

Year: 2016

Authors: Passoni M., Sgattoni A., Prencipe I., Fedeli L., Dellasega D., Cialfi L., Choi IW., Kim IJ., Janulewicz KA., Lee HW., Sung JH., Lee SK., Nam CH.

Autors Affiliation: Politecn Milan, Dipartimento Energia, I-20133 Milan, Italy; CNR, Res Unit Piero Caldirola, Ist Fis Plasma, I-20125 Milan, Italy;‎ CNR, Res Unit Adriano Gozzini, Ist Nazl Ott, I-56124 Pisa, Italy; Helmholtz Zentrum Dresden Rossendorf, Inst Strahlenphys, D-01328 Dresden, Germany;‎ Univ Pisa, Dipartimento Fis Enrico Fermi, I-56127 Pisa, Italy; Inst Basic Sci, Ctr Relativist Laser Sci, Gwangju 61005, South Korea; Gwangju Inst Sci & Technol, Adv Photon Res Inst, Gwangju 61005, South Korea; Gwangju Inst Sci & Technol, Dept Phys & Photon Sci, Gwangju 61005, South Korea; Mil Univ Technol, Inst Optoelect, PL-00908 Warsaw, Poland;‎ Korea Basic Sci Inst, Opt Instrumentat Dev Team, 169-148 Gwahak Ro, Daejeon 34133, South Korea

Abstract: The development of novel target concepts is crucial to make laser-driven acceleration of ion beams suitable for applications. We tested double-layer targets formed of an ultralow density nanostructured carbon layer (similar to 7 mg/cm(3), 8-12 mu m-thick) deposited on a mu m-thick solid Al foil. A systematic increase in the total number of the accelerated ions (protons and C6+) as well as enhancement of both their maximum and average energies was observed with respect to bare solid foil targets. Maximum proton energies up to 30 MeV were recorded. Dedicated three-dimensional particle-in-cell simulations were in remarkable agreement with the experimental results, giving clear indication of the role played by the target nanostructures in the interaction process.

Journal/Review: PHYSICAL REVIEW ACCELERATORS AND BEAMS

Volume: 19 (6)      Pages from: 061301-1  to: 061301-6

KeyWords: DIFFUSION-LIMITED AGGREGATION; PLASMA; ACCELERATION; PULSE
DOI: 10.1103/PhysRevAccelBeams.19.061301

Citations: 35
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