Studies of ablated plasma and shocks produced in a planar target by a sub-nanosecond laser pulse of intensity relevant to shock ignition

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F15%3A00454631" target="_blank" >RIV/68378271:_____/15:00454631 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61389021:_____/15:00454631 RIV/68407700:21340/15:00231032

Výsledek na webu

<a href="http://dx.doi.org/10.1017/S0263034615000622" target="_blank" >http://dx.doi.org/10.1017/S0263034615000622</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1017/S0263034615000622" target="_blank" >10.1017/S0263034615000622</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Studies of ablated plasma and shocks produced in a planar target by a sub-nanosecond laser pulse of intensity relevant to shock ignition

Popis výsledku v původním jazyce

The effect of laser intensity on characteristics of the plasma ablated from a low-Z (CH) planar target as well as on parameters of the laser-driven shock generated in the target for various scale-lengths of preformed plasma was investigated at the kilojoule PALS laser facility. Characteristics of the plasma were measured with the use of 3-frame interferometry, ion diagnostics, an X-ray spectrometer, and K? imaging. It was found that the pressure of the shock generated in the plastic layer is relativelyweakly influenced by the preplasma and the maximum pressure reaches 80-90 Mbar. However, an increase in pressure of the shock with the laser intensity is slower than predicted by theory for a planar shock and the maximum pressure achieved in the experiment is by a factor of 2 lower than predicted by the theory. The laser-to-hot electrons energy conversion efficiency is small, 1% or below, and the influence of hot electrons on the generated shock is expected to be weak.

Název v anglickém jazyce

Studies of ablated plasma and shocks produced in a planar target by a sub-nanosecond laser pulse of intensity relevant to shock ignition

Popis výsledku anglicky

The effect of laser intensity on characteristics of the plasma ablated from a low-Z (CH) planar target as well as on parameters of the laser-driven shock generated in the target for various scale-lengths of preformed plasma was investigated at the kilojoule PALS laser facility. Characteristics of the plasma were measured with the use of 3-frame interferometry, ion diagnostics, an X-ray spectrometer, and K? imaging. It was found that the pressure of the shock generated in the plastic layer is relativelyweakly influenced by the preplasma and the maximum pressure reaches 80-90 Mbar. However, an increase in pressure of the shock with the laser intensity is slower than predicted by theory for a planar shock and the maximum pressure achieved in the experiment is by a factor of 2 lower than predicted by the theory. The laser-to-hot electrons energy conversion efficiency is small, 1% or below, and the influence of hot electrons on the generated shock is expected to be weak.

Druh

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

CEP obor

BL - Fyzika plasmatu a výboje v plynech

OECD FORD obor

—

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

—

Svazek periodika

33

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

15

Strana od-do

561-575

Kód UT WoS článku

000360446200025

EID výsledku v databázi Scopus

2-s2.0-84940450417