https://doi.org/10.1051/epjconf/20135917011
Efficient ion beam generation in laser interactions with micro-structured targets
1 Czech Technical University in Prague, FNSPE, Brehova 7, 115 19 Praha 1, Czechia
2 Institute of Physics, AS CR, ELI-Beamlines Project, Na Slovance 2, 182 21 Praha 8, Czechia
3 INFN, I-95129 Catania, Italy and Univ. Messina, Dept. Physics, I-98166 Messina, Italy
a e-mail: jiri.limpouch@fjfi.cvut.cz
Published online: 15 November 2013
The maximum ion energy and acceleration efficiency have to be increased for practical applications of intense ion beams produced by intense short laser pulses incident on a thin foil. For this aim, we propose to use foil with a microscopic structure on the front size. We have prepared such targets by depositing a monolayer of polystyrene nanospheres of a size comparable to laser wavelength on a thin foil. The damage threshold of the produced targets is found experimentally above 3.5 × 109 W/cm2 for a nanosecond pedestal and above 1011 W/cm2 for femtosecond prepulses.
© Owned by the authors, published by EDP Sciences, 2013
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