Investigation of a plasma-target interaction through electric field characterization examining surface and volume charge contributions: modeling and experiment
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F18%3A00106473" target="_blank" >RIV/00216224:14310/18:00106473 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1088/1361-6595/aadcc0" target="_blank" >http://dx.doi.org/10.1088/1361-6595/aadcc0</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1088/1361-6595/aadcc0" target="_blank" >10.1088/1361-6595/aadcc0</a>
Alternative languages
Result language
angličtina
Original language name
Investigation of a plasma-target interaction through electric field characterization examining surface and volume charge contributions: modeling and experiment
Original language description
Numerical simulations and experiments are performed to better understand the interaction between a pulsed helium plasma jet and a dielectric target. The focus of this work lies on the volume and surface charge influence on the electric field distribution. Experimentally, the electric field due to surface charges is measured inside an electro-optic target under exposure of a plasma jet, using the optical technique called Mueller polarimetry. For the first time, the time-resolved spatial distributions of both the axial and radial components of electric field inside the target are obtained simultaneously. A 2D fluid model is used in a complementary way to the experiments in order to study separately the contribution of volume charges and surface charges to the spatio-temporal evolutions of the electric field during the plasma-surface interaction. The experimental investigation shows that the average axial and radial components of electric field inside the dielectric target, only due to surface charges, are lower than generally reported for electric field values in the plasma plume. Thanks to the phenomenological comparison with experiments, simulations show that during the plasma-surface interaction two effects sequentially determine the electric field inside the target: firstly, a relatively high electric field is observed due to the proximity of the ionization front; afterwards, in longer timescales, lower electric fields are induced due to the contribution of both leftover volume charges close to the target and surface charges deposited on its surface. The experimental technique provides a unique way to examine this second phase of the plasma-surface interaction.
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/LO1411" target="_blank" >LO1411: Development of Centre for low-cost plasma and nanotechnology surface modification</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Plasma Sources Science and Technology
ISSN
0963-0252
e-ISSN
1361-6595
Volume of the periodical
27
Issue of the periodical within the volume
9
Country of publishing house
GB - UNITED KINGDOM
Number of pages
16
Pages from-to
094002
UT code for WoS article
000444754200001
EID of the result in the Scopus database
2-s2.0-85055775760