Statistical model of the stimulated forward Brillouin scattering driven by a randomized laser beam in plasma

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F10974938%3A_____%2F25%3A25_89_07" target="_blank" >RIV/10974938:_____/25:25_89_07 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1103/PhysRevE.111.025207" target="_blank" >https://doi.org/10.1103/PhysRevE.111.025207</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevE.111.025207" target="_blank" >10.1103/PhysRevE.111.025207</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Statistical model of the stimulated forward Brillouin scattering driven by a randomized laser beam in plasma

Popis výsledku v původním jazyce

The modeling of a spatially incoherent laser beam remains a central problem of the parametric instabilities in the context of inertial confinement fusion. This paper gives a simplified and comprehensive overview of the recent analytical developments regarding the modeling of these laser beams and a comparison with a dedicated experiment. Our model accounts for the statistical standard deviation of the gain and accurately captures the entanglement between wave mixing processes and the speckle correlations thus resolving the longstanding contradictions between the random phase approximation and the model of independent speckles. It is successfully compared to a recent laser beam spray experiment and the associated paraxial simulations, demonstrating that backscattering predictions require accounting for the beam spray. Our framework thus provides a way to evaluate and guide the analysis of parametric instabilities in high laser energy experiments.

Název v anglickém jazyce

Statistical model of the stimulated forward Brillouin scattering driven by a randomized laser beam in plasma

Popis výsledku anglicky

The modeling of a spatially incoherent laser beam remains a central problem of the parametric instabilities in the context of inertial confinement fusion. This paper gives a simplified and comprehensive overview of the recent analytical developments regarding the modeling of these laser beams and a comparison with a dedicated experiment. Our model accounts for the statistical standard deviation of the gain and accurately captures the entanglement between wave mixing processes and the speckle correlations thus resolving the longstanding contradictions between the random phase approximation and the model of independent speckles. It is successfully compared to a recent laser beam spray experiment and the associated paraxial simulations, demonstrating that backscattering predictions require accounting for the beam spray. Our framework thus provides a way to evaluate and guide the analysis of parametric instabilities in high laser energy experiments.

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

—

Návaznosti

R - Projekt Ramcoveho programu EK

Rok uplatnění

2025

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

111

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

6

Strana od-do

025207 (1-6)

Kód UT WoS článku

001451485000006

EID výsledku v databázi Scopus

2-s2.0-85218447100