Time evolution of stimulated Raman scattering and two-plasmon decay at laser intensities relevant for shock ignition in a hot plasma

0508312 - FZÚ 2020 RIV GB eng J - Journal Article
Cristoforetti, G. - Antonelli, L. - Mancelli, D. - Atzeni, S. - Baffigi, F. - Barbato, F. - Batani, D. - Boutoux, G. - D'Amato, F. - Dostál, Jan - Dudžák, Roman - Filippov, E. - Gu, Yanjun - Juha, Libor - Klimo, O. - Krus, M. - Malko, S. - Martynenko, A.S. - Nicolai, Ph. - Ospina, V. - Pikuz, S. - Renner, Oldřich - Santos, J. - Tikhonchuk, Vladimir - Trela, J. - Viciani, D. - Volpe, L. - Weber, Stefan A. - Gizzi, L.A.
Time evolution of stimulated Raman scattering and two-plasmon decay at laser intensities relevant for shock ignition in a hot plasma.
High Power Laser Science and Engineering. Roč. 7, Aug (2019), s. 1-14, č. článku e51. ISSN 2095-4719. E-ISSN 2052-3289
R&D Projects: GA MŠMT EF16_027/0008215; GA MŠMT LG15013; GA MŠMT EF16_013/0001793; GA MŠMT EF16_019/0000789
EU Projects: European Commission(XE) 654148 - LASERLAB-EUROPE
Grant - others:MOBILITY FZU(XE) CZ.02.2.69/0.0/0.0/16_027/0008215; OP VVV - ELITAS(XE) CZ.02.1.01/0.0/0.0/16_013/0001793; OP VVV - ADONIS(XE) CZ.02.1.01/0.0/0.0/16_019/0000789
Institutional support: RVO:68378271
Keywords : plasma simulations * shock ignition * stimulated Raman scattering * two-plasmon decay
OECD category: Optics (including laser optics and quantum optics)
Impact factor: 2.606, year: 2019
Method of publishing: Open access

Laser–plasma interaction (LPI) at intensities 1015–1016 W · cm−2 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 ∼1.2 × 1016 W · cm−2 with a ∼100 µm scalelength plasma produced from irradiation of a flat plastic target. The laser pulse duration was 300 ps, and the high value of plasma temperature of ∼4 keV was expected from hydrodynamic simulations.

Permanent Link: http://hdl.handle.net/11104/0299256