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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

  • Czech description

Classification

  • Type

    J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database

  • CEP classification

  • 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