| DVOŘÁK, Pavel, Martina MRKVIČKOVÁ, Adam OBRUSNÍK, Kratzer JAN, Dědina JIŘÍ a Vojtěch PROCHÁZKA. Fluorescence measurement of atomic oxygen concentration in a dielectric barrier discharge. Plasma Sources Science and Technology. Bristol, England: IOP PUBLISHING LTD, 2017, roč. 26, č. 6, s. nestránkováno, 11 s. ISSN 0963-0252. Dostupné z: https://dx.doi.org/10.1088/1361-6595/aa70da. |
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@article{1385995,
author = {Dvořák, Pavel and Mrkvičková, Martina and Obrusník, Adam and Jan, Kratzer and Jiří, Dědina and Procházka, Vojtěch},
article_location = {Bristol, England},
article_number = {6},
doi = {http://dx.doi.org/10.1088/1361-6595/aa70da},
keywords = {Laser induced fluorescence; TALIF; atomic oxygen; O; dielectric barrier discharges},
language = {eng},
issn = {0963-0252},
journal = {Plasma Sources Science and Technology},
title = {Fluorescence measurement of atomic oxygen concentration in a dielectric barrier discharge},
volume = {26},
year = {2017}
}
TY - JOUR
ID - 1385995
AU - Dvořák, Pavel - Mrkvičková, Martina - Obrusník, Adam - Jan, Kratzer - Jiří, Dědina - Procházka, Vojtěch
PY - 2017
TI - Fluorescence measurement of atomic oxygen concentration in a dielectric barrier discharge
JF - Plasma Sources Science and Technology
VL - 26
IS - 6
SP - nestránkováno
EP - nestránkováno
PB - IOP PUBLISHING LTD
SN - 09630252
KW - Laser induced fluorescence
KW - TALIF
KW - atomic oxygen
KW - O
KW - dielectric barrier discharges
N2 - Concentration of atomic oxygen was measured in a volume dielectric barrier discharge (DBD) ignited in mixtures of Ar + O2 (+ H2) at atmospheric pressure. Two-photon absorption laser induced fluorescence (TALIF) of atomic oxygen was used and this method was calibrated by TALIF of Xe in a mixture of argon and a trace of xenon. The calibration was performed at atmospheric pressure and it was shown that quenching by three-body collisions has negligible effect on the life time of excited Xe atoms. The concentration of atomic oxygen in the DBD was around 10^{21} m-3 and it was stable during the whole discharge period. The concentration did not depend much on the electric power delivered to the discharge provided that the power was sufficiently high so that the visible discharge filled the whole reactor volume. Both the addition of hydrogen or replacing of argon by helium led to a significant decrease of atomic oxygen concentration. The TALIF measurements of O concentration levels in the DBD plasma performed in this work are made use of e.g. in the field analytical chemistry. The results contribute to understanding the processes of analyte hydride preconcentration and subsequent atomization in the field of trace element analysis where DBD plasma atomizers are employed.
ER -
DVOŘÁK, Pavel, Martina MRKVIČKOVÁ, Adam OBRUSNÍK, Kratzer JAN, Dědina JIŘÍ a Vojtěch PROCHÁZKA. Fluorescence measurement of atomic oxygen concentration in a dielectric barrier discharge. \textit{Plasma Sources Science and Technology}. Bristol, England: IOP PUBLISHING LTD, 2017, roč.~26, č.~6, s.~nestránkováno, 11 s. ISSN~0963-0252. Dostupné z: https://dx.doi.org/10.1088/1361-6595/aa70da.
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