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@article{2370320,
author = {Khan, Waseem and Dvořák, Pavel and Bolouki, Nima and Mrkvičková, Martina},
article_number = {2},
doi = {http://dx.doi.org/10.1088/1361-6595/ad211a},
keywords = {atomic nitrogen; TALIF; picosecond laser; plasma pencil; atmospheric pressure plasma},
language = {eng},
issn = {0963-0252},
journal = {Plasma Sources Science and Technology},
title = {Concentration measurements of atomic nitrogen in an atmospheric-pressure RF plasma jet using a picosecond TALIF},
url = {https://iopscience.iop.org/article/10.1088/1361-6595/ad211a},
volume = {33},
year = {2024}
}
TY - JOUR
ID - 2370320
AU - Khan, Waseem - Dvořák, Pavel - Bolouki, Nima - Mrkvičková, Martina
PY - 2024
TI - Concentration measurements of atomic nitrogen in an atmospheric-pressure RF plasma jet using a picosecond TALIF
JF - Plasma Sources Science and Technology
VL - 33
IS - 2
SP - 1-10
EP - 1-10
PB - IOP Publishing Ltd
SN - 09630252
KW - atomic nitrogen
KW - TALIF
KW - picosecond laser
KW - plasma pencil
KW - atmospheric pressure plasma
UR - https://iopscience.iop.org/article/10.1088/1361-6595/ad211a
N2 - The absolute concentration and spatial distribution of ground-state atomic nitrogen (N) in an atmospheric pressure plasma jet were measured using the two-photon absorption laser-induced fluorescence (TALIF). The jet was ignited by radio frequency (RF) voltage in argon (or argon with nitrogen admixture) flowing through a silica tube. The spatially resolved measurements of atomic nitrogen concentration were realized in the effluent of the jet. In a pure argon plasma, the N concentration was increased with the distance from the silica tube and reached the maximum value (3.5*10¹⁴ cm⁻³) at the distance of 15 mm, and then sharply decreased at the end of the plume. On the contrary, plasma ignited in Ar with nitrogen admixture, the maximum N concentration was located directly at the end of the silica tube, where plasma starts to blow out into the ambient air. The highest N concentrations for 0.5% and 2% of N_2 in the feed gas were 1.3*10¹⁵ cm⁻³ and 4*10¹⁵ cm⁻³, respectively.
ER -
KHAN, Waseem, Pavel DVOŘÁK, Nima BOLOUKI a Martina MRKVIČKOVÁ. Concentration measurements of atomic nitrogen in an atmospheric-pressure RF plasma jet using a picosecond TALIF. \textit{Plasma Sources Science and Technology}. IOP Publishing Ltd, 2024, roč.~33, č.~2, s.~1-10. ISSN~0963-0252. Dostupné z: https://dx.doi.org/10.1088/1361-6595/ad211a.
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