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Collective absorption of laser radiation in plasma at sub-relativistic intensities
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SYSNO ASEP 0580610 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Collective absorption of laser radiation in plasma at sub-relativistic intensities Author(s) Gu, Yanjun (UFP-V) ORCID
Klimo, O. (CZ)
Nicolaï, P. (FR)
Shekhanov, S. (CZ)
Weber, S. (CZ)
Tikhonchuk, V.T. (RU)Number of authors 6 Article number e39 Source Title High Power Laser Science and Engineering. - : Cambridge University Press - ISSN 2095-4719
Roč. 7, July (2019)Number of pages 10 s. Language eng - English Country GB - United Kingdom Keywords inertial confinement fusion ; parametric instabilities Subject RIV BH - Optics, Masers, Lasers OECD category Optics (including laser optics and quantum optics) R&D Projects EF16_013/0001793 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) EF15_003/0000449 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) EF16_019/0000789 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) EF16_019/0000778 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Method of publishing Open access Institutional support UFP-V - RVO:61389021 UT WOS 000475304300001 EID SCOPUS 85069211378 DOI 10.1017/hpl.2019.25 Annotation Processes of laser energy absorption and electron heating in an expanding plasma in the range of irradiances are studied with the aid of kinetic simulations. The results show a strong reflection due to stimulated Brillouin scattering and a significant collisionless absorption related to stimulated Raman scattering near and below the quarter critical density. Also presented are parametric decay instability and resonant excitation of plasma waves near the critical density. All these processes result in the excitation of high-amplitude electron plasma waves and electron acceleration. The spectrum of scattered radiation is significantly modified by secondary parametric processes, which provide information on the spatial localization of nonlinear absorption and hot electron characteristics. The considered domain of laser and plasma parameters is relevant for the shock ignition scheme of inertial confinement fusion. Workplace Institute of Plasma Physics Contact Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975 Year of Publishing 2024 Electronic address https://www.cambridge.org/core/journals/high-power-laser-science-and-engineering/article/collective-absorption-of-laser-radiation-in-plasma-at-subrelativistic-intensities/BFB241E19631D11BF5080DC9396228FE
Number of the records: 1