Collective absorption of laser radiation in plasma at sub-relativistic intensities

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F19%3A00520841" target="_blank" >RIV/68378271:_____/19:00520841 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21340/19:00339375 RIV/61389021:_____/19:00580610

Výsledek na webu

<a href="http://hdl.handle.net/11104/0305499" target="_blank" >http://hdl.handle.net/11104/0305499</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1017/hpl.2019.25" target="_blank" >10.1017/hpl.2019.25</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Collective absorption of laser radiation in plasma at sub-relativistic intensities

Popis výsledku v původním jazyce

Processes of laser energy absorption and electron heating in an expanding plasma in the range of irradiances I 2 D 1015–1016 W mm2=cm2 are studied with the aid of kinetic simulations. The results show a strong reflection due to stimulated Brillouin scattering and a significant collisionless absorption related to stimulated Raman scattering near and below the quarter critical density. Also presented are parametric decay instability and resonant excitation of plasma waves near the critical density. All these processes result in the excitation of high-amplitude electron plasma waves and electron acceleration. The spectrum of scattered radiation is significantly modified by secondary parametric processes, which provide information on the spatial localization of nonlinear absorption and hot electron characteristics. The considered domain of laser and plasma parameters is relevant for the shock ignition scheme of inertial confinement fusion.

Název v anglickém jazyce

Collective absorption of laser radiation in plasma at sub-relativistic intensities

Popis výsledku anglicky

Processes of laser energy absorption and electron heating in an expanding plasma in the range of irradiances I 2 D 1015–1016 W mm2=cm2 are studied with the aid of kinetic simulations. The results show a strong reflection due to stimulated Brillouin scattering and a significant collisionless absorption related to stimulated Raman scattering near and below the quarter critical density. Also presented are parametric decay instability and resonant excitation of plasma waves near the critical density. All these processes result in the excitation of high-amplitude electron plasma waves and electron acceleration. The spectrum of scattered radiation is significantly modified by secondary parametric processes, which provide information on the spatial localization of nonlinear absorption and hot electron characteristics. The considered domain of laser and plasma parameters is relevant for the shock ignition scheme of inertial confinement fusion.

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

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

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název periodika

High Power Laser Science and Engineering

ISSN

2095-4719

e-ISSN

—

Svazek periodika

7

Číslo periodika v rámci svazku

Jul

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

10

Strana od-do

1-10

Kód UT WoS článku

000475304300001

EID výsledku v databázi Scopus

2-s2.0-85069211378