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7 May 2013 Enhanced TNSA acceleration with 0.1-1 PW lasers
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The enhancement of laser-driven proton acceleration mechanism in TNSA regime has been demonstrated through the use of advanced nanostructured thin foils. The presence of a monolayer of polystyrene nanospheres on the target frontside has drastically enhanced the absorption of the incident laser beam, leading to a consequent increase in the maximum proton beam energy and total laser conversion efficiency. The experimental measurements have been carried out at the 100 TW and 1 PW laser systems available at the APRI-GIST facility. Experimental results and comparison with particle-in-cell numerical simulations are presented and discussed.
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D. Margarone, O. Klimo, I. J. Kim, J. Prokupek, Jiri Limpouch, T. M. Jeong, T. Mocek, J. Psikal, H. T. Kim, J. Proska, K. H. Nam, I. W. Choi, T. Levato, L. Stolcova, S. K. Lee, M. Krus, F. Novotny, J. H. Sung, J. Kaufman, T. J. Yu, and G. Korn "Enhanced TNSA acceleration with 0.1-1 PW lasers", Proc. SPIE 8780, High-Power, High-Energy, and High-Intensity Laser Technology; and Research Using Extreme Light: Entering New Frontiers with Petawatt-Class Lasers, 878023 (7 May 2013);

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