Detailed Information on Publication Record
2017
Concentration of atomic hydrogen in a dielectric barrier discharge measured by two-photon absorption fluorescence
DVOŘÁK, Pavel, Marek TALÁBA, Adam OBRUSNÍK, Kratzer JAN, Dědina JIŘÍ et. al.Basic information
Original name
Concentration of atomic hydrogen in a dielectric barrier discharge measured by two-photon absorption fluorescence
Name in Czech
Koncentrace atomárního vodíku v dielektrickém bariérovém výboji měřená metodou TALIF
Authors
DVOŘÁK, Pavel (203 Czech Republic, guarantor, belonging to the institution), Marek TALÁBA (703 Slovakia), Adam OBRUSNÍK (203 Czech Republic), Kratzer JAN (203 Czech Republic) and Dědina JIŘÍ (203 Czech Republic)
Edition
Plasma Sources Science and Technology, Bristol, IOP PUBLISHING LTD, 2017, 0963-0252
Other information
Language
English
Type of outcome
Článek v odborném periodiku
Field of Study
10305 Fluids and plasma physics
Country of publisher
United Kingdom of Great Britain and Northern Ireland
Confidentiality degree
není předmětem státního či obchodního tajemství
Impact factor
Impact factor: 3.939
RIV identification code
RIV/00216224:14310/17:00094852
Organization unit
Faculty of Science
UT WoS
000405581100001
Keywords (in Czech)
Laserem indukovaná fluorescence; TALIF; atomární vodík; H; dielektrický bariérový výboj
Keywords in English
Laser induced fluorescence; TALIF; atomic hydrogen; H; dielectric barrier discharges
Tags
International impact, Reviewed
Změněno: 30/3/2018 17:54, Ing. Nicole Zrilić
V originále
Two-photon absorption laser-induced fluorescence (TALIF) was utilized for measuring the concentration of atomic hydrogen in a volume dielectric barrier discharge (DBD) ignited in mixtures of Ar, H2 and O2 at the atmospheric pressure. The method was calibrated by TALIF of krypton diluted in argon at the atmospheric pressure, proving that three-body collisions had negligible effect on quenching of excited krypton atoms. The diagnostic study was complemented with a three-dimensional numerical model of the gas flow and a zero-dimensional model of chemistry in order to better understand the reaction kinetics and identify the key pathways leading to production and destruction of atomic hydrogen. It was determined that the density of atomic hydrogen in Ar - H2 mixtures was in the order of 10^{21} m^{-3} and decreased when oxygen was added into the gas mixture. Spatially resolved measurements and simulations revealed a sharply bordered region with low atomic hydrogen concentration when oxygen was added to the gas mixture. At substoichiometric oxygen/hydrogen ratios, this H-poor region is constricted to an area close to the gas inlet and it is shown that the size of this region is not only influenced by the chemistry but also by the gas flow patterns. Experimentally, it was observed that a decrease of H2 concentration in the feeding Ar - H2 mixture lead to an increase of H production in the DBD.
In Czech
TALIF měření a výpočet koncentrace atomárního vodíku v dielektrickém bariérovém výboji používaném jako atomizátor pro účely analytické chemie.
Links
| CZ.1.05/2.1.00/03.0086, interní kód MU |
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| GA13-24635S, research and development project |
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| GA17-04329S, research and development project |
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| LO1411, research and development project |
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