Laser-driven acceleration of protons from hydrogenated annealed silicon targets

0353134 - FZÚ 2011 RIV FR eng J - Journal Article
Picciotto, A. - Margarone, Daniele - Krása, Josef - Velyhan, Andriy - Serra, E. - Bellutti, P. - Scarduelli, G. - Calliari, L. - Krouský, Eduard - Rus, Bedřich - Dapor, M.
Laser-driven acceleration of protons from hydrogenated annealed silicon targets.
EPL. Roč. 92, č. 3 (2010), 34008/1-34008/5. ISSN 0295-5075. E-ISSN 1286-4854
R&D Projects: GA MŠMT(CZ) LC528
Institutional research plan: CEZ:AV0Z10100523
Keywords : laser-driven acceleration * laser ablation * plasma-material interactions * boundary layer effects
Subject RIV: BH - Optics, Masers, Lasers
Impact factor: 2.753, year: 2010

This paper provides the first demonstration that an hydrogenated annealed crystalline silicon may be used as a source of protons in laser-driven acceleration experiments. We analyze and compare the proton production from two silicon targets excited by a sub-nanosecond laser. One target (treated) was hydrogenated and annealed, while the other (untreated) did not undergo these procedures. The experimental results show that for the treated target, the number of generated protons is ~1.4×10^15 sr−1 while for the other it is ~3.6×10^13 sr−1. Their maximum energy is about 2MeV with a laser intensity three order of magnitude lower than in previous experiments.
Permanent Link: http://hdl.handle.net/11104/0192461