Measurements of parametric instabilities at laser intensities relevant to strong shock generation

Cristoforetti, G.; Antonelli, L.; Atzeni, S.; Baffigi, F.; Barbato, F.; Batani, D.; Boutoux, G.; Colaïtis, A.; Dostál, Jan; Dudžák, Roman; Juha, Libor; Koester, P.; Marocchino, A.; Mancelli, D.; Nicolai, Ph.; Renner, Oldřich; Santos, J.J.; Schiavi, A.; Skoric, M.M.; Šmíd, Michal; Straka, Petr; Gizzi, L.A.

doi:https://dx.doi.org/10.1063/1.5006021

Počet záznamů: 1

Measurements of parametric instabilities at laser intensities relevant to strong shock generation

1.

SYSNO ASEP	0490069
Druh ASEP	J - Článek v odborném periodiku
Zařazení RIV	J - Článek v odborném periodiku
Poddruh J	Článek ve WOS
Název	Measurements of parametric instabilities at laser intensities relevant to strong shock generation
Tvůrce(i)	Cristoforetti, G. (IT) Antonelli, L. (IT) Atzeni, S. (IT) Baffigi, F. (IT) Barbato, F. (CH) Batani, D. (FR) Boutoux, G. (FR) Colaïtis, A. (FR) Dostál, Jan (FZU-D)_ORCID Dudžák, Roman (FZU-D)_{RID, ORCID} Juha, Libor (FZU-D)_{RID, ORCID, SAI} Koester, P. (IT) Marocchino, A. (IT) Mancelli, D. (FR) Nicolai, Ph. (FR) Renner, Oldřich (FZU-D)_{RID, ORCID} Santos, J.J. (FR) Schiavi, A. (IT) Skoric, M.M. (JP) Šmíd, Michal (FZU-D)_RID Straka, Petr (FZU-D)_RID Gizzi, L.A. (IT)
Celkový počet autorů	22
Číslo článku	012702
Zdroj.dok.	Physics of Plasmas - ISSN 1070-664X Roč. 25, č. 1 (2018), s. 1-12
Poč.str.	12 s.
Jazyk dok.	eng - angličtina
Země vyd.	US - Spojené státy americké
Klíč. slova	stimulated Raman-scattering ; inhomogeneous plasmas ; Brillouin-scattering ; 2-Plasmon Decay ; Prague Asterix Laser System facility
Vědní obor RIV	BL - Fyzika plazmatu a výboje v plynech
Obor OECD	Fluids and plasma physics (including surface physics)
CEP	EF15_008/0000162 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy
	GA17-05076S GA ČR - Grantová agentura ČR
Institucionální podpora	FZU-D - RVO:68378271
UT WOS	000424021700080
EID SCOPUS	85040446149
DOI	10.1063/1.5006021
Anotace	Parametric instabilities at laser intensities in the range (2–6) x 1015 W/cm2 (438 nm, 250 ps, 100–300 J) have been investigated in planar geometry at the Prague Asterix Laser System facility via calorimetry and spectroscopy. Experimental data show that Stimulated Brillouin Scattering (SBS) is more effective than Stimulated Raman Scattering (SRS) in degrading laser-plasma coupling, therefore reducing the energy available for the generation of the shock wave. The level of the SBS backscatter and laser reflection is found to be in the range between 3% and 15% of the incident laser energy, while Backward SRS (BRS) reflectivity ranges between 0.02% and 0.2%, depending on the delay between the pulses. Half-integer harmonic emission is observed and provides a signatureof Two Plasmon Decay (TPD) occurring around the quarter of the critical density. Our measurements indicate, besides others, that hot electrons are predominantly produced by SRS rather than TPD.
Pracoviště	Fyzikální ústav
Kontakt	Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579
Rok sběru	2019

Počet záznamů: 1