Barrier discharges in CO2 – optical emission spectra analysis and E/N determination from intensity ratio

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F25%3A00141913" target="_blank" >RIV/00216224:14310/25:00141913 - isvavai.cz</a>

Výsledek na webu

<a href="https://iopscience.iop.org/article/10.1088/1361-6595/adc7d7" target="_blank" >https://iopscience.iop.org/article/10.1088/1361-6595/adc7d7</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1361-6595/adc7d7" target="_blank" >10.1088/1361-6595/adc7d7</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Barrier discharges in CO2 – optical emission spectra analysis and E/N determination from intensity ratio

Popis výsledku v původním jazyce

Barrier discharges in CO2 are investigated using optical emission spectroscopy and electrical measurements, with the support of spatially one-dimensional fluid modelling. This study focuses on a sinusoidally driven atmospheric pressure Townsend discharge (APTD) and a single- and multi-filament barrier discharge at atmospheric pressure. The spectra of weak CO2 barrier discharge emission in UV-vis-NIR range are recorded. The optical emission of selected vibrational spectral bands is analyzed and the E/N in barrier discharges is determined using the developed intensity ratio method and kinetic data available in the literature. The technique of time-correlated single-photon counting is used to obtain the necessary sub-nanosecond temporal resolution and high signal sensitivity for the single-filament experiment. After the necessary calibration, the E/N of 330 Td is measured in the barrier discharge streamer head. This is coherent with the results of numerical modelling. The E/N determined in APTD has a value of 110 Td, which agrees within 10% with the results of the electrical equivalent circuit model. The uncertainties coming from kinetic data and the low sensitivity of some rate coefficient ratios complicate the easy and broad utilization of the method. Future steps are therefore proposed, including uncertainty quantification and sensitivity analysis of the simplified model and necessary synthetic spectra fitting.

Název v anglickém jazyce

Barrier discharges in CO2 – optical emission spectra analysis and E/N determination from intensity ratio

Popis výsledku anglicky

Barrier discharges in CO2 are investigated using optical emission spectroscopy and electrical measurements, with the support of spatially one-dimensional fluid modelling. This study focuses on a sinusoidally driven atmospheric pressure Townsend discharge (APTD) and a single- and multi-filament barrier discharge at atmospheric pressure. The spectra of weak CO2 barrier discharge emission in UV-vis-NIR range are recorded. The optical emission of selected vibrational spectral bands is analyzed and the E/N in barrier discharges is determined using the developed intensity ratio method and kinetic data available in the literature. The technique of time-correlated single-photon counting is used to obtain the necessary sub-nanosecond temporal resolution and high signal sensitivity for the single-filament experiment. After the necessary calibration, the E/N of 330 Td is measured in the barrier discharge streamer head. This is coherent with the results of numerical modelling. The E/N determined in APTD has a value of 110 Td, which agrees within 10% with the results of the electrical equivalent circuit model. The uncertainties coming from kinetic data and the low sensitivity of some rate coefficient ratios complicate the easy and broad utilization of the method. Future steps are therefore proposed, including uncertainty quantification and sensitivity analysis of the simplified model and necessary synthetic spectra fitting.

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

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

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

Plasma Sources Science and Technology

ISSN

0963-0252

e-ISSN

1361-6595

Svazek periodika

34

Číslo periodika v rámci svazku

5

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

20

Strana od-do

„055008“

Kód UT WoS článku

001491765700001

EID výsledku v databázi Scopus

2-s2.0-105005733875