Langmuir probe perturbations during in situ monitoring of pulsed laser deposition plasmas

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F22%3A00557069" target="_blank" >RIV/68378271:_____/22:00557069 - isvavai.cz</a>

Výsledek na webu

<a href="https://hdl.handle.net/11104/0334048" target="_blank" >https://hdl.handle.net/11104/0334048</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/ma15082769" target="_blank" >10.3390/ma15082769</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Langmuir probe perturbations during in situ monitoring of pulsed laser deposition plasmas

Popis výsledku v původním jazyce

We explored the limitations of Langmuir probe (LP) as a technique for in situ PLD control by performing investigations on several metallic plasmas, expanding in various Ar atmosphere conditions. Sub-microsecond modulation was seen in the reconstructed IV characteristics attributed to non-equilibrium dynamics of the ejected charges. A perturbative regime was recorded for Ar pressures higher than 2 Pa, where ionic bursts were observed in the electron saturation region. This perturbation was identified as a plasma fireball. A non-linear multifractal model was developed to explore new regimes of the LP. The strange attractors characterizing each fireball were reconstructed and their evolution with the Ar pressure is discussed. Both short- and long-time non-linear behavior were correlated via probe bias and the pressure effect on the strange attractors defining the fireball-like behavior was investigated. A good correlation was noticed between the simulated data and experimental findings.n

Název v anglickém jazyce

Langmuir probe perturbations during in situ monitoring of pulsed laser deposition plasmas

Popis výsledku anglicky

We explored the limitations of Langmuir probe (LP) as a technique for in situ PLD control by performing investigations on several metallic plasmas, expanding in various Ar atmosphere conditions. Sub-microsecond modulation was seen in the reconstructed IV characteristics attributed to non-equilibrium dynamics of the ejected charges. A perturbative regime was recorded for Ar pressures higher than 2 Pa, where ionic bursts were observed in the electron saturation region. This perturbation was identified as a plasma fireball. A non-linear multifractal model was developed to explore new regimes of the LP. The strange attractors characterizing each fireball were reconstructed and their evolution with the Ar pressure is discussed. Both short- and long-time non-linear behavior were correlated via probe bias and the pressure effect on the strange attractors defining the fireball-like behavior was investigated. A good correlation was noticed between the simulated data and experimental findings.n

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

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

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2022

Kód důvěrnosti údajů

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

Název periodika

Materials

ISSN

1996-1944

e-ISSN

1996-1944

Svazek periodika

15

Číslo periodika v rámci svazku

8

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

16

Strana od-do

2769

Kód UT WoS článku

000785264500001

EID výsledku v databázi Scopus

2-s2.0-85128750044