Spatiotemporal diagnostics of laser induced plasma of potassium gallosilicate zeolite

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F19%3APU133564" target="_blank" >RIV/00216305:26620/19:PU133564 - isvavai.cz</a>

Výsledek na webu

<a href="https://pubs.rsc.org/en/content/articlelanding/2019/JA/C9JA00052F#!divAbstract" target="_blank" >https://pubs.rsc.org/en/content/articlelanding/2019/JA/C9JA00052F#!divAbstract</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/C9JA00052F" target="_blank" >10.1039/C9JA00052F</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Spatiotemporal diagnostics of laser induced plasma of potassium gallosilicate zeolite

Popis výsledku v původním jazyce

The present work focuses on the analysis of laser induced plasma of a zeolite sample to study its spatial and temporal evolution. Plasmas were induced by focusing a high-peak power IR CO2 pulsed laser at 10.6 μm and irradiance 6.3 GW cm−2 onto a sample under 0.01 Pa vacuum, which produced special conditions allowing the detection of species in high ionization states and velocities. In this study, high spatial, temporal and spectral resolution was obtained using imaging by an optical emission spectroscopy method, namely, laser induced breakdown spectroscopy. In addition, this work introduces the possibility of studying the early stages of plasma evolution. The induced plasma shows electronically excited neutral K, Ga, Si and O atoms and ionized K+, Ga+, Ga2+, Si+, Si2+, Si3+, O+, O2+, and O3+ species. Time-resolved two-dimensional spectra, which were also spatially resolved, were used to study the expanded distribution of some species ejected during ablation. Spatial and temporal variations of different atoms and excited ionic species are reported. Decreasing electron densities in the order of 1017 to 1016 cm−3 at 2 mm from the target surface were measured using Stark broadening in the plasma lifetime of 4 μs. The measured temperature range of electrons is 35 000 to 5800 K within the first 5 μs after initiation of optical breakdown and for the supposed local thermodynamic equilibrium of the plume at a distance of 2 mm from the target.

Název v anglickém jazyce

Spatiotemporal diagnostics of laser induced plasma of potassium gallosilicate zeolite

Popis výsledku anglicky

The present work focuses on the analysis of laser induced plasma of a zeolite sample to study its spatial and temporal evolution. Plasmas were induced by focusing a high-peak power IR CO2 pulsed laser at 10.6 μm and irradiance 6.3 GW cm−2 onto a sample under 0.01 Pa vacuum, which produced special conditions allowing the detection of species in high ionization states and velocities. In this study, high spatial, temporal and spectral resolution was obtained using imaging by an optical emission spectroscopy method, namely, laser induced breakdown spectroscopy. In addition, this work introduces the possibility of studying the early stages of plasma evolution. The induced plasma shows electronically excited neutral K, Ga, Si and O atoms and ionized K+, Ga+, Ga2+, Si+, Si2+, Si3+, O+, O2+, and O3+ species. Time-resolved two-dimensional spectra, which were also spatially resolved, were used to study the expanded distribution of some species ejected during ablation. Spatial and temporal variations of different atoms and excited ionic species are reported. Decreasing electron densities in the order of 1017 to 1016 cm−3 at 2 mm from the target surface were measured using Stark broadening in the plasma lifetime of 4 μs. The measured temperature range of electrons is 35 000 to 5800 K within the first 5 μs after initiation of optical breakdown and for the supposed local thermodynamic equilibrium of the plume at a distance of 2 mm from the target.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10301 - Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)

Projekt

<a href="/cs/project/LQ1601" target="_blank" >LQ1601: CEITEC 2020</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název periodika

Journal of Analytical Atomic Spectrometry

ISSN

0267-9477

e-ISSN

1364-5544

Svazek periodika

6

Číslo periodika v rámci svazku

34

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

9

Strana od-do

1247-1255

Kód UT WoS článku

000472223800017

EID výsledku v databázi Scopus

2-s2.0-85066945254