Laser-plasma interaction studies in the context of shock ignition: the regime dominated by parametric instabilities

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F13%3A00213883" target="_blank" >RIV/68407700:21340/13:00213883 - isvavai.cz</a>

Výsledek na webu

<a href="http://iopscience.iop.org/0741-3335/55/9/095002/" target="_blank" >http://iopscience.iop.org/0741-3335/55/9/095002/</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/0741-3335/55/9/095002" target="_blank" >10.1088/0741-3335/55/9/095002</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Laser-plasma interaction studies in the context of shock ignition: the regime dominated by parametric instabilities

Popis výsledku v původním jazyce

The shock ignition concept for inertial confinement fusion includes launching a strong shock with a high-intensity laser spike into an imploding shell. The laser intensity in the plasma corona is above the threshold for parametric instabilities, thus providing conditions for strong non-linear effects. Here we present a series of one-dimensional kinetic simulations of laser-plasma interactions in such a regime. After a transient period of strong non-stationary scattering, the laser-plasma interaction enters an asymptotic regime where a significant part of the incident laser flux is absorbed in the plasma and is transformed into hot electrons. The repartition of the absorbed energy and spectral characteristics of the scattered radiation are presented forlaser intensities in the range 2.4-24 PW cm(-2). For a laser intensity of 8 PW cm(-2), the total absorption is 69%; about 50% of absorption takes place at quarter critical density and the remaining 19% at 1/ 16th of the critical density.

Název v anglickém jazyce

Laser-plasma interaction studies in the context of shock ignition: the regime dominated by parametric instabilities

Popis výsledku anglicky

The shock ignition concept for inertial confinement fusion includes launching a strong shock with a high-intensity laser spike into an imploding shell. The laser intensity in the plasma corona is above the threshold for parametric instabilities, thus providing conditions for strong non-linear effects. Here we present a series of one-dimensional kinetic simulations of laser-plasma interactions in such a regime. After a transient period of strong non-stationary scattering, the laser-plasma interaction enters an asymptotic regime where a significant part of the incident laser flux is absorbed in the plasma and is transformed into hot electrons. The repartition of the absorbed energy and spectral characteristics of the scattered radiation are presented forlaser intensities in the range 2.4-24 PW cm(-2). For a laser intensity of 8 PW cm(-2), the total absorption is 69%; about 50% of absorption takes place at quarter critical density and the remaining 19% at 1/ 16th of the critical density.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BL - Fyzika plasmatu a výboje v plynech

OECD FORD obor

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Projekt

<a href="/cs/project/GPP205%2F11%2FP660" target="_blank" >GPP205/11/P660: Simulace parametrických procesů při interakci laserového záření s plazmatem v souvislosti s Shock ignition</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2013

Kód důvěrnosti údajů

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

Název periodika

Plasma Physics and Controlled Fusion

ISSN

0741-3335

e-ISSN

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Svazek periodika

55

Číslo periodika v rámci svazku

9

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

13

Strana od-do

1-13

Kód UT WoS článku

000323774400003

EID výsledku v databázi Scopus

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