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Target normal sheath acceleration by fs laser and advanced carbon foils with gold films and nanoparticles
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SYSNO ASEP 0524444 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Target normal sheath acceleration by fs laser and advanced carbon foils with gold films and nanoparticles Author(s) Torrisi, L. (IT)
Rosinski, M. (PL)
Cutroneo, Mariapompea (UJF-V) ORCID, RID, SAI
Torrisi, Alfio (UJF-V) RID, ORCIDNumber of authors 4 Article number 043107 Source Title Physics of Plasmas - ISSN 1070-664X
Roč. 27, č. 4 (2020)Number of pages 11 s. Publication form Print - P Language eng - English Country US - United States Keywords ion sources ; laser produced plasmas ; SiC detectors 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) EF16_013/0001812 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) GA19-02482S GA ČR - Czech Science Foundation (CSF) Method of publishing Open access Institutional support UJF-V - RVO:61389005 UT WOS 000529426500001 EID SCOPUS 85084176303 DOI 10.1063/5.0004834 Annotation Thin foils of graphene oxide (GO) are irradiated by a fs titanium sapphire laser at an intensity of about 10(19) W/cm(2) in high vacuum. The produced plasma in the forward direction accelerates ions in a regime of target-normal-sheath-acceleration, thanks to the relativistic electron emission from the target surface and to their emission from the rear foil surface, generating a high electric field pulse with the positive target. The ion acceleration is measured mainly using SiC detectors in the time-of-flight configuration. Adding gold as nanoparticles or as a thin coverage film, the ion acceleration is enhanced as a result of a higher plasma electron density. The optimal acceleration is reached by varying the GO thickness, the Au nanoparticle concentration, the thin Au film thickness, and the irradiation conditions. Particularly important is the laser focal position with respect to the target surface, which is responsible for different acceleration values. In the used experimental conditions, a maximum proton energy of 2.6MeV was obtained and the best modality to add Au atoms to the target is discussed. Workplace Nuclear Physics Institute Contact Markéta Sommerová, sommerova@ujf.cas.cz, Tel.: 266 173 228 Year of Publishing 2021 Electronic address https://doi.org/10.1063/5.0004834
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