Pre-plasma effect on laser beam energy transfer to a dense target under conditions relevant to shock ignition

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F15%3A00450819" target="_blank" >RIV/68378271:_____/15:00450819 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61389021:_____/15:00450819 RIV/68407700:21340/15:00369332

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Pre-plasma effect on laser beam energy transfer to a dense target under conditions relevant to shock ignition

Popis výsledku v původním jazyce

Paper reports on properties of a plasma formed by sequential action of two laser beams on a flat target, simulating the conditions of shock-ignited inertial confinement fusion target exposure. The experiments were performed using planar targets consisting of a massive copper (Cu) plate coated with a thin plastic (CH) layer, which was irradiated by the 1? PALS laser beam at the energy of 250 J. To study the parameters of the plasma treated by the two-beam irradiation of the targets, a set of various diagnostics was applied. The 2D numerical simulations have been used to support the interpretation of experimental data. The general conclusion is that the fraction of the main laser beam energy deposited into the massive copper at two beam irradiation decreases in comparison with the case of pre-plasma. The efficiency of the energy transfer from the main laser pulse to a solid part of targets is deteriorated by means of the fast electrons and the wave of an electron thermal conductivity.

Název v anglickém jazyce

Pre-plasma effect on laser beam energy transfer to a dense target under conditions relevant to shock ignition

Popis výsledku anglicky

Paper reports on properties of a plasma formed by sequential action of two laser beams on a flat target, simulating the conditions of shock-ignited inertial confinement fusion target exposure. The experiments were performed using planar targets consisting of a massive copper (Cu) plate coated with a thin plastic (CH) layer, which was irradiated by the 1? PALS laser beam at the energy of 250 J. To study the parameters of the plasma treated by the two-beam irradiation of the targets, a set of various diagnostics was applied. The 2D numerical simulations have been used to support the interpretation of experimental data. The general conclusion is that the fraction of the main laser beam energy deposited into the massive copper at two beam irradiation decreases in comparison with the case of pre-plasma. The efficiency of the energy transfer from the main laser pulse to a solid part of targets is deteriorated by means of the fast electrons and the wave of an electron thermal conductivity.

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

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

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2015

Kód důvěrnosti údajů

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

Název periodika

Laser and Particle Beams

ISSN

0263-0346

e-ISSN

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Svazek periodika

33

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

16

Strana od-do

221-236

Kód UT WoS článku

000355284700013

EID výsledku v databázi Scopus

2-s2.0-84929846461