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Ring-shaped electron beams from laser-wakefield accelerator
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SYSNO ASEP 0551575 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Ring-shaped electron beams from laser-wakefield accelerator Author(s) Valenta, Petr (FZU-D) ORCID
Grittani, Gabriele Maria (FZU-D) ORCID
Lazzarini, Carlo Maria (FZU-D) ORCID
Klimo, Ondřej (FZU-D) RID, ORCID
Bulanov, Sergey V. (FZU-D) ORCIDNumber of authors 5 Article number 1177909 Source Title Laser Acceleration of Electrons, Protons, and Ions VI. - Bellingham : SPIE, 2021 - ISSN 0277-786X - ISBN 978-1-5106-4392-5 Pages s. 1-9 Number of pages 9 s. Publication form Online - E Action Laser Acceleration of Electrons, Protons, and Ions VI Event date 19.04.2021 - 30.04.2021 VEvent location online Country CZ - Czech Republic Event type WRD Language eng - English Country US - United States Keywords laser-plasma interaction ; laser-wakefield acceleration ; Langmuir waves ; electron rings Subject RIV BH - Optics, Masers, Lasers OECD category Optics (including laser optics and quantum optics) R&D Projects EF15_003/0000449 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) EF16_019/0000789 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) LQ1606 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Research Infrastructure ELI Beamlines III - 90141 - Fyzikální ústav AV ČR, v. v. i. Institutional support FZU-D - RVO:68378271 EID SCOPUS 85109213605 DOI 10.1117/12.2589222 Annotation Using analytical methods and computer simulations, we investigate physical processes which lead to the formation of ring-shaped electromagnetic and electron structures in laser-plasma interaction. We observe that as the intense laser pulse excites a nonlinear Langmuir wave in an underdense plasmas, a significant portion of the pulse is refracted outwards the propagation direction due to the interactions with thin, high-density electron walls surrounding the wave cavities. Because of the radial symmetry, the refracted light forms a distinct electromagnetic ring that encircles the driver pulse. The efficiency of the energy transfer to the electromagnetic ring is relatively high, so that the ring can generate its own Langmuir wave and trigger the electron self-injection, which results in a ring-shaped beam of high-energy electrons. The properties of the ring-shaped electromagnetic and electron beams depend on the parameters of the Langmuir wave cavity walls, thus they can be controlled by tuning the parameters of the laser and plasma. The ring structures could be applied as a drivers for acceleration of positively charged particles, or as a diagnostic to determine regimes and the overall efficiency of the laser-wakefield accelerator. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2022 Electronic address https://www.spiedigitallibrary.org/conference-proceedings-of-spie/11779/1177909/Ring-shaped-electron-beams-from-laser-wakefield-accelerator/10.1117/12.2589222.short?SSO=1
Number of the records: 1