Počet záznamů: 1
Time evolution of stimulated Raman scattering and two-plasmon decay at laser intensities relevant for shock ignition in a hot plasma
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SYSNO ASEP 0582251 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Time evolution of stimulated Raman scattering and two-plasmon decay at laser intensities relevant for shock ignition in a hot plasma Tvůrce(i) Cristoforetti, G. (IT)
Antonelli, L. (GB)
Mancelli, D. (FR)
Atzeni, S. (IT)
Baffigi, F. (IT)
Barbato, F. (FR)
Batani, D. (FR)
Boutoux, G. (FR)
D'Amato, F. (IT)
Dostál, Jan (UFP-V) RID, ORCID
Dudžák, Roman (UFP-V) RID, ORCID
Filippov, E. (RU)
Gu, Yanjun (UFP-V) ORCID
Juha, Libor (UFP-V) ORCID
Klimo, O. (CZ)
Krůs, Miroslav (UFP-V) RID
Malko, S. (ES)
Martynenko, A.S. (RU)
Nicolai, P. (FR)
Ospina, V. (ES)
Pikuz, S. (RU)
Renner, O. (CZ)
Santos, J. (FR)
Tikhonchuk, V.T. (FR)
Trela, J. (FR)
Viciani, S. (IT)
Volpe, L. (ES)
Weber, S. (CZ)
Gizzi, L.A. (IT)Celkový počet autorů 29 Číslo článku e51 Zdroj.dok. High Power Laser Science and Engineering. - : Cambridge University Press - ISSN 2095-4719
Roč. 7, August (2019)Poč.str. 14 s. Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova plasma simulations ; shock ignition ; stimulated Raman scattering ; two-plasmon decay Vědní obor RIV BL - Fyzika plazmatu a výboje v plynech Obor OECD Fluids and plasma physics (including surface physics) CEP EF16_013/0001793 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy EF15_003/0000449 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy EF16_019/0000789 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy EF16_013/0001793 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy LTT17015 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy LM2015083 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy EF16_013/0001552 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Způsob publikování Open access Institucionální podpora UFP-V - RVO:61389021 UT WOS 000482954900001 EID SCOPUS 85071016284 DOI 10.1017/hpl.2019.37 Anotace Laser-plasma interaction (LPI) at intensities is dominated by parametric instabilities which can be responsible for a significant amount of non-collisional absorption and generate large fluxes of high-energy nonthermal electrons. Such a regime is of paramount importance for inertial confinement fusion (ICF) and in particular for the shock ignition scheme. In this paper we report on an experiment carried out at the Prague Asterix Laser System (PALS) facility to investigate the extent and time history of stimulated Raman scattering (SRS) and two-plasmon decay (TPD) instabilities, driven by the interaction of an infrared laser pulse at an intensity with a scalelength plasma produced from irradiation of a flat plastic target. The laser pulse duration (300 ps) and the high value of plasma temperature () expected from hydrodynamic simulations make these results interesting for a deeper understanding of LPI in shock ignition conditions. Experimental results show that absolute TPD/SRS, driven at a quarter of the critical density, and convective SRS, driven at lower plasma densities, are well separated in time, with absolute instabilities driven at early times of interaction and convective backward SRS emerging at the laser peak and persisting all over the tail of the pulse. Side-scattering SRS, driven at low plasma densities, is also clearly observed. Experimental results are compared to fully kinetic large-scale, two-dimensional simulations. Particle-in-cell results, beyond reproducing the framework delineated by the experimental measurements, reveal the importance of filamentation instability in ruling the onset of SRS and stimulated Brillouin scattering instabilities and confirm the crucial role of collisionless absorption in the LPI energy balance. Pracoviště Ústav fyziky plazmatu Kontakt Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975 Rok sběru 2024 Elektronická adresa https://www.cambridge.org/core/journals/high-power-laser-science-and-engineering/article/time-evolution-of-stimulated-raman-scattering-and-twoplasmon-decay-at-laser-intensities-relevant-for-shock-ignition-in-a-hot-plasma/2CDE20F724E6354F16AF759E7A808DA7
Počet záznamů: 1