Quantification of surface charging memory effect in ionization wave dynamics
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F22%3A00125221" target="_blank" >RIV/00216224:14310/22:00125221 - isvavai.cz</a>
Result on the web
<a href="https://www.nature.com/articles/s41598-022-04914-8" target="_blank" >https://www.nature.com/articles/s41598-022-04914-8</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1038/s41598-022-04914-8" target="_blank" >10.1038/s41598-022-04914-8</a>
Alternative languages
Result language
angličtina
Original language name
Quantification of surface charging memory effect in ionization wave dynamics
Original language description
The dynamics of ionization waves (IWs) in atmospheric pressure discharges is fundamentally determined by the electric polarity (positive or negative) at which they are generated and by the presence of memory effects, i.e. leftover charges and reactive species that influence subsequent IWs. This work examines and compares positive and negative IWs in pulsed plasma jets (1 μs on-time), showing the difference in their nature and the different resulting interaction with a dielectric BSO target. For the first time, it is shown that a surface charging memory effect is produced, i.e. that a significant amount of surface charges and electric field remain in the target in between discharge pulses (200 μs off-time). This memory effect directly impacts IW dynamics and is especially important when using negative electric polarity. The results suggest that the remainder of surface charges is due to the lack of charged particles in the plasma near the target, which avoids a full neutralization of the target. This demonstration and the quantification of the memory effect are possible for the first time by using an unique approach, assessing the electric field inside a dielectric material through the combination of an advanced experimental technique called Mueller polarimetry and state-of-the-art numerical simulations.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10305 - Fluids and plasma physics (including surface physics)
Result continuities
Project
<a href="/en/project/LM2018097" target="_blank" >LM2018097: R&D centre for plasma and nanotechnology surface modifications</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Scientific Reports
ISSN
2045-2322
e-ISSN
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Volume of the periodical
12
Issue of the periodical within the volume
1
Country of publishing house
DE - GERMANY
Number of pages
13
Pages from-to
1181
UT code for WoS article
000746132400055
EID of the result in the Scopus database
2-s2.0-85123481693