Impact of electron trapping on stimulated Raman scattering under incoherent broadband laser light in homogeneous plasma

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F24%3A00379012" target="_blank" >RIV/68407700:21340/24:00379012 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1103/PhysRevE.110.065207" target="_blank" >https://doi.org/10.1103/PhysRevE.110.065207</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevE.110.065207" target="_blank" >10.1103/PhysRevE.110.065207</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Impact of electron trapping on stimulated Raman scattering under incoherent broadband laser light in homogeneous plasma

Popis výsledku v původním jazyce

Backward stimulated Raman scattering is a three-wave coupling instability requiring the matching of an incoming pump light wave to a scattered light wave and an electron plasma wave. It can be harmful to laser-driven inertial confinement fusion because of the reflection of a part of the incident laser flux and the generation of suprathermal electrons that preheat the fuel. It is believed that by increasing the laser bandwidth, one can suppress the excitation of Raman scattering and mitigate its detrimental effects. It is demonstrated in this paper that using a broad bandwidth laser has little effect on stimulated Raman scattering in the kinetic inflation regime where Landau damping dominates, as the additional bandwidth allows the electron plasma wave to match a wider range of laser frequencies. As a result, plasma wave saturation and Raman backscattering levels remain high even when the laser bandwidth is much larger than the effective instability growth rate.

Název v anglickém jazyce

Impact of electron trapping on stimulated Raman scattering under incoherent broadband laser light in homogeneous plasma

Popis výsledku anglicky

Backward stimulated Raman scattering is a three-wave coupling instability requiring the matching of an incoming pump light wave to a scattered light wave and an electron plasma wave. It can be harmful to laser-driven inertial confinement fusion because of the reflection of a part of the incident laser flux and the generation of suprathermal electrons that preheat the fuel. It is believed that by increasing the laser bandwidth, one can suppress the excitation of Raman scattering and mitigate its detrimental effects. It is demonstrated in this paper that using a broad bandwidth laser has little effect on stimulated Raman scattering in the kinetic inflation regime where Landau damping dominates, as the additional bandwidth allows the electron plasma wave to match a wider range of laser frequencies. As a result, plasma wave saturation and Raman backscattering levels remain high even when the laser bandwidth is much larger than the effective instability growth rate.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10306 - Optics (including laser optics and quantum optics)

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název periodika

PHYSICAL REVIEW E

ISSN

2470-0045

e-ISSN

2470-0053

Svazek periodika

110

Číslo periodika v rámci svazku

6

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

12

Strana od-do

—

Kód UT WoS článku

001391332700006

EID výsledku v databázi Scopus

2-s2.0-85213043805