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@article{2304257,
author = {Dijcks, Siebe and Kusýn, Lukáš and Janssen, Jesper and Bilek, Petr and Nijdam, Sander and Hoder, Tomáš},
article_number = {April},
doi = {http://dx.doi.org/10.3389/fphy.2023.1120284},
keywords = {plasma; streamer discharge; reduced electric field; optical emission spectroscopy; OES; nanosecond pulsed discharge; non-equilibrium},
language = {eng},
issn = {2296-424X},
journal = {Frontiers in Physics},
title = {High-resolution electric field and temperature distributions in positive streamers},
url = {https://doi.org/10.3389/fphy.2023.1120284},
volume = {11},
year = {2023}
}
TY - JOUR
ID - 2304257
AU - Dijcks, Siebe - Kusýn, Lukáš - Janssen, Jesper - Bilek, Petr - Nijdam, Sander - Hoder, Tomáš
PY - 2023
TI - High-resolution electric field and temperature distributions in positive streamers
JF - Frontiers in Physics
VL - 11
IS - April
SP - 1-15
EP - 1-15
PB - Frontiers Media SA
SN - 2296424X
KW - plasma
KW - streamer discharge
KW - reduced electric field
KW - optical emission spectroscopy
KW - OES
KW - nanosecond pulsed discharge
KW - non-equilibrium
UR - https://doi.org/10.3389/fphy.2023.1120284
N2 - In this work, we aim to take a detailed experimental picture of the positive streamer. We apply optical emission spectroscopy to the first negative system (FNS, B-2 Sigma(+)(u) -> X-2 Sigma(+)(g)) of N-2(+) and the second positive system (SPS, C-3 Pi(u) -> B-3 Pi(g)) of N-2. Large, centimeter wide, and highly reproducible streamers are created in pure nitrogen and synthetic air, at pressures ranging from 33 to 266 mbar. Direct time resolved spectral imaging of the space charge layer resulted in spatiotemporal maps of the calculated reduced electric field strength (E/N) and rovibrational temperature in sub-nanosecond and sub-millimetre resolution. The E/N peaks at approximately 540 and 480 Td, directly in front of the space charge layer, for synthetic air and pure nitrogen respectively, as determined by using the intensity ratio method of FNS and SPS. A global model for pure nitrogen in PLASIMO uses the experimentally determined E/N distribution to draw a picture of the gas kinetics around the space charge layer passage. In addition, the results of the global model serve as a reference to interpret the rotational and vibrational temperatures obtained from experimental FNS and SPS emissions.
ER -
DIJCKS, Siebe, Lukáš KUSÝN, Jesper JANSSEN, Petr BILEK, Sander NIJDAM a Tomáš HODER. High-resolution electric field and temperature distributions in positive streamers. \textit{Frontiers in Physics}. Frontiers Media SA, 2023, roč.~11, April, s.~1-15. ISSN~2296-424X. Dostupné z: https://dx.doi.org/10.3389/fphy.2023.1120284.
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