Experimental observation of parametric instabilities at laser intensities relevant for shock ignition

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F17%3A00479486" target="_blank" >RIV/68378271:_____/17:00479486 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1209/0295-5075/117/35001" target="_blank" >http://dx.doi.org/10.1209/0295-5075/117/35001</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1209/0295-5075/117/35001" target="_blank" >10.1209/0295-5075/117/35001</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Experimental observation of parametric instabilities at laser intensities relevant for shock ignition

Popis výsledku v původním jazyce

We report measurements of parametric instabilities and hot electron generation in a laser intensity regime up to 6 × 1015 W/cm2, typical of the shock ignition approach to inertial fusion. Experiments performed at the PALS laboratory in Prague show that the incident laser energy losses are dominated by Stimulated Brillouin Scattering (SBS) rather than by Stimulated Raman Scattering (SRS) or Two-Plasmon Decay (TPD). Results are compared to hydrodynamics simulations using a code that includes self-consistent calculations of non-linear laser plasma interactions and accounts for the laser intensity statistics contained in the beam speckles. Good agreement is found for the backscattered SRS light, and for temperature and flux of hot electrons. The effect of high-intensity speckles on backscattered SRS is also underlined numerically and experimentally.

Název v anglickém jazyce

Experimental observation of parametric instabilities at laser intensities relevant for shock ignition

Popis výsledku anglicky

We report measurements of parametric instabilities and hot electron generation in a laser intensity regime up to 6 × 1015 W/cm2, typical of the shock ignition approach to inertial fusion. Experiments performed at the PALS laboratory in Prague show that the incident laser energy losses are dominated by Stimulated Brillouin Scattering (SBS) rather than by Stimulated Raman Scattering (SRS) or Two-Plasmon Decay (TPD). Results are compared to hydrodynamics simulations using a code that includes self-consistent calculations of non-linear laser plasma interactions and accounts for the laser intensity statistics contained in the beam speckles. Good agreement is found for the backscattered SRS light, and for temperature and flux of hot electrons. The effect of high-intensity speckles on backscattered SRS is also underlined numerically and experimentally.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10305 - Fluids and plasma physics (including surface physics)

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2017

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Europhysics Letters

ISSN

0295-5075

e-ISSN

—

Svazek periodika

117

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

FR - Francouzská republika

Počet stran výsledku

6

Strana od-do

—

Kód UT WoS článku

000401164200001

EID výsledku v databázi Scopus

2-s2.0-85016766474