Dynamics of reactive oxygen species produced by the COST microplasma jet
Rattachement africain : de, hu, gb. Niveau de preuve : code pays fourni par la source.
Le résumé fourni par la source
Abstract This study is focused on measuring the densities of the excited molecular oxygen species, O 2 ( a 1 Δ g ) and O 2 ( b 1 Σ g + ) , produced in a COST atmospheric pressure plasma jet using a helium–oxygen mixture. Knowledge of the ozone density is critical for measurements because of its high quenching rate of these species. Additionally, O 2 ( a 1 Δ g ) is difficult to measure due to its low emission intensity and sensitivity to background interference in the plasma region. Therefore, a flow cell was used to enhance signal detection in the effluent region. To validate the measurements and improve understanding of reaction mechanisms, results were compared with two simulation models: a pseudo-one-dimensional plug flow simulation and a 2D fluid simulation. The plug flow simulation provided an effective means for estimating species densities, with a fast computation time. The 2D simulation offered a more realistic description of the flow dynamics, which proved critical to correctly describe the experimental trends. However, it requires long computation times to reach an equilibrium state in the flow cell. Otherwise, it leads to discrepancies to the experimental data. Further discrepancies arose from an overestimation of the ozone density from the models, as validated from the O 2 ( b 1 Σ g + ) density measurements. Optimizing the reaction rate coefficients for the effluent region might improve the agreement with the experimental results. Despite these limitations, both simulations aligned reasonably well with experimental data, showcasing the well validated plasma chemistry of the models, even for complicated effluent geometries.
Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.
Le contrôle bibliographique ouvert
DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.
- Titre Crossref
- Dynamics of reactive oxygen species produced by the COST microplasma jet
- Date Crossref
- 01/10/2025
- Éditeur
- IOP Publishing
- Type
- journal-article
Ce recoupement confirme des métadonnées liées au DOI. Il ne confirme ni la méthode ni les conclusions de l’étude, et il ne compte pas comme une seconde source scientifique indépendante.
Où se fait cette recherche
-
Ruhr University Bochum Plasma Interface Physics pays non établi dans la noticeUniversité ou école supérieure
-
HUN-REN Wigner Research Centre for Physics pays non établi dans la noticeStructure de recherche
-
University of York pays non établi dans la noticeUniversité ou école supérieure
-
Faculty of Electrical Engineering and Information Technology Chair of Theoretical Electrical Engineering pays non établi dans la noticeUniversité ou école supérieure
-
Institute for Solid State Physics and Optics pays non établi dans la noticeStructure de recherche
-
School of Physics York Plasma Institute pays non établi dans la noticeUniversité ou école supérieure
Plasma Interface Physics — Ruhr University Bochum, HUN-REN Wigner Research Centre for Physics et University of York, avec 3 autres affiliations.
Une affiliation ne permet pas de déduire la nationalité d’un auteur.