Photoionized argon plasmas induced with intense soft x-ray and extreme ultraviolet pulses

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F16%3A00459913" target="_blank" >RIV/68378271:_____/16:00459913 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61389021:_____/16:00459913

Výsledek na webu

<a href="http://dx.doi.org/10.1088/0741-3335/58/1/014009" target="_blank" >http://dx.doi.org/10.1088/0741-3335/58/1/014009</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/0741-3335/58/1/014009" target="_blank" >10.1088/0741-3335/58/1/014009</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Photoionized argon plasmas induced with intense soft x-ray and extreme ultraviolet pulses

Popis výsledku v původním jazyce

n this work, photoionized plasmas were created by irradiation of gaseous argon with soft x-ray (SXR) and extreme ultraviolet (EUV) intense radiation pulses. Two different laser-produced plasma sources, employing a low energy Nd:YAG laser and a high energy iodine laser system (PALS), were used for creation of photoionized plasmas. In both cases the EUV or SXR beam irradiated the Ar stream, injected into a vacuum chamber synchronously with the radiation pulse. Emission spectra, measured for the Ar photoionized plasmas indicated strong differences in ionization degree for plasmas produced using low and high energy systems. In case of the the EUV driving pulses, emission lines corresponding to neutral atoms and singly charged ions were observed. In case of the SXR pulses utilized for the photoionized plasma creation, only Ar V-VIII emission lines were recorded. Additionally, electron density measurements were performed by laser interferometry employing a femtosecond laser system synchronized with the irradiating system. Maximum electron density for the Ar photoionized plasma, induced using the high energy system, reached 1.9 . 10(18) cm(-3). Interferometric measurements performed for the moment of maximum intensity of the main laser pulse (t = 0) revealed no fringe shift. Detection limit for the interferometric measurements was estimated. It allowed to estimate the upper limit for electron density at t = 0 as 5 . 10(16) cm(-3).

Název v anglickém jazyce

Photoionized argon plasmas induced with intense soft x-ray and extreme ultraviolet pulses

Popis výsledku anglicky

n this work, photoionized plasmas were created by irradiation of gaseous argon with soft x-ray (SXR) and extreme ultraviolet (EUV) intense radiation pulses. Two different laser-produced plasma sources, employing a low energy Nd:YAG laser and a high energy iodine laser system (PALS), were used for creation of photoionized plasmas. In both cases the EUV or SXR beam irradiated the Ar stream, injected into a vacuum chamber synchronously with the radiation pulse. Emission spectra, measured for the Ar photoionized plasmas indicated strong differences in ionization degree for plasmas produced using low and high energy systems. In case of the the EUV driving pulses, emission lines corresponding to neutral atoms and singly charged ions were observed. In case of the SXR pulses utilized for the photoionized plasma creation, only Ar V-VIII emission lines were recorded. Additionally, electron density measurements were performed by laser interferometry employing a femtosecond laser system synchronized with the irradiating system. Maximum electron density for the Ar photoionized plasma, induced using the high energy system, reached 1.9 . 10(18) cm(-3). Interferometric measurements performed for the moment of maximum intensity of the main laser pulse (t = 0) revealed no fringe shift. Detection limit for the interferometric measurements was estimated. It allowed to estimate the upper limit for electron density at t = 0 as 5 . 10(16) cm(-3).

Druh

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

CEP obor

BH - Optika, masery a lasery

OECD FORD obor

—

Projekt

<a href="/cs/project/LM2010014" target="_blank" >LM2010014: Projekt PALS</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název periodika

Plasma Physics and Controlled Fusion

ISSN

0741-3335

e-ISSN

—

Svazek periodika

58

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

9

Strana od-do

014009

Kód UT WoS článku

000368471900010

EID výsledku v databázi Scopus

2-s2.0-84949677204