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Near-3-MeV protons from target-normal-sheath-acceleration femtosecond laser irradiating advanced targets
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SYSNO ASEP 0508841 Document Type J - Journal Article R&D Document Type O - Ostatní Subsidiary J Článek ve WOS Title Near-3-MeV protons from target-normal-sheath-acceleration femtosecond laser irradiating advanced targets Author(s) Torrisi, L. (IT)
Cutroneo, Mariapompea (UJF-V) ORCID, RID, SAI
Rosinski, M. (PL)
Badziak, J. (PL)
Parys, P. (PL)
Wolowski, J. (PL)
Zaras-Szydlowska, A. (PL)
Torrisi, Alfio (UJF-V) RID, ORCIDNumber of authors 8 Article number e201800127 Source Title Contributions to Plasma Physics. - : Wiley - ISSN 0863-1042
Roč. 59, č. 7 (2019)Number of pages 14 s. Publication form Print - P Language eng - English Country DE - Germany Keywords laser-generated plasma ; proton acceleration ; reduced graphene oxide ; SiC detector ; target-normal-sheath acceleration (TNSA) Subject RIV BL - Plasma and Gas Discharge Physics OECD category Fluids and plasma physics (including surface physics) R&D Projects LM2015056 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) GBP108/12/G108 GA ČR - Czech Science Foundation (CSF) GA16-05167S GA ČR - Czech Science Foundation (CSF) Method of publishing Open access Institutional support UJF-V - RVO:61389005 UT WOS 000484421400004 EID SCOPUS 85061053769 DOI 10.1002/ctpp.201800127 Annotation Advanced targets based on graphene oxide and gold thin film were irradiated at high laser intensity (10(18)-10(19) W/cm(2)) with 50-fs laser pulses and high contrast (10(8)) to investigate ion acceleration in the target-normal-sheath-acceleration regime. Time-of-flight technique was employed with SiC semiconductor detectors and ion collectors in order to measure the ion kinetic energy and to control the properties of the generated plasma. It was found that, at the optimized laser focus position with respect to the target, maximum proton acceleration up to about 3 MeV energy and low angular divergence could be generated. The high proton energy is explained as due to the high electrical and thermal conductivity of the reduced graphene oxide structure. Dependence of the maximum proton energy on the target focal position and thickness is presented and discussed. Workplace Nuclear Physics Institute Contact Markéta Sommerová, sommerova@ujf.cas.cz, Tel.: 266 173 228 Year of Publishing 2020 Electronic address https://doi.org/10.1002/ctpp.201800127
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