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Laser-driven high-energy proton beam with homogeneous spatial profile from a nanosphere target
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SYSNO ASEP 0455724 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Laser-driven high-energy proton beam with homogeneous spatial profile from a nanosphere target Author(s) Margarone, Daniele (FZU-D) RID, ORCID
Kim, I. J. (KR)
Pšikal, Jan (FZU-D) RID, ORCID
Kaufman, Jan (FZU-D) ORCID
Mocek, Tomáš (FZU-D) RID, ORCID, SAI
Choi, I.W. (KR)
Štolcová, Lucie (FZU-D) RID
Proska, J. (CZ)
Choukourov, A. (CZ)
Melnichuk, I. (CZ)
Klimo, Ondřej (FZU-D) RID, ORCID
Limpouch, Jiří (FZU-D) RID
Sung, J.H. (KR)
Lee, S.K. (KR)
Korn, Georg (FZU-D) RID, ORCID
Jeong, T.M. (KR)Source Title Physical Review Special Topics-Accelerators and Beams - ISSN 1098-4402
Roč. 18, č. 7 (2015), "071304-1"-"071304-7"Number of pages 7 s. Language eng - English Country US - United States Keywords petawatt-laser ; acceleration ; spectroscopy Subject RIV BH - Optics, Masers, Lasers R&D Projects LD14089 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) GA15-02964S GA ČR - Czech Science Foundation (CSF) ED1.1.00/02.0061 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) ED3.1.00/10.0210 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) EE2.3.20.0279 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Institutional support FZU-D - RVO:68378271 UT WOS 000357811700001 EID SCOPUS 84940416564 DOI 10.1103/PhysRevSTAB.18.071304 Annotation A high-energy, high-yield proton beam with a good homogeneous profile has been generated from a nanosphere target irradiated by a short (30-fs), intense (7 x 10(20) W/cm(2)) laser pulse. A maximum proton energy of 30 MeV has been observed with a high proton number of 7 x 10(10) in the energy range 5-30 MeV. A homogeneous spatial profile with a uniformity (standard deviation from an average value within 85% beam area) of 15% is observed with the nanosphere dielectric target. Particle-in-cell simulations show the enhancement of proton cutoff energy and proton number with the nanosphere target and reveal that the homogeneous beam profile is related with a broadened angular distribution of hot electrons, which is initiated by the nanosphere structure. The homogeneous spatial properties obtained with the nanosphere target will be advantageous in developing laser-driven proton sources for practical applications in which high-quality beams are required. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2016
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