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Electric field determination in air plasmas from intensity ratio of nitrogen spectral bands: I. Sensitivity analysis and uncertainty quantification of dominant processes

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    SYSNO ASEP0493304
    Document TypeJ - Journal Article
    R&D Document TypeJournal Article
    Subsidiary JČlánek ve WOS
    TitleElectric field determination in air plasmas from intensity ratio of nitrogen spectral bands: I. Sensitivity analysis and uncertainty quantification of dominant processes
    Author(s) Šimek, Milan (UFP-V) RID, ORCID
    Obrusník, A. (CZ)
    Bílek, P. (CZ)
    Hoder, T. (CZ)
    Bonaventura, Z. (CZ)
    Number of authors5
    Article number085013
    Source TitlePlasma Sources Science & Technology. - : Institute of Physics Publishing - ISSN 0963-0252
    Roč. 27, č. 8 (2018)
    Number of pages23 s.
    Languageeng - English
    CountryGB - United Kingdom
    Keywordselectric field ; air kinetics ; sensitivity analysis ; uncertainty quantification ; optical emission spectroscopy ; cross-sections ; nitrogen spectral bands
    Subject RIVBL - Plasma and Gas Discharge Physics
    OECD categoryFluids and plasma physics (including surface physics)
    R&D ProjectsGA15-04023S GA ČR - Czech Science Foundation (CSF)
    Institutional supportUFP-V - RVO:61389021
    UT WOS000443257000005
    EID SCOPUS85053104502
    DOI10.1088/1361-6595/aad663
    AnnotationThe ratio of the spectral band intensities of the first negative and second positive spectral systems of molecular nitrogen is a well recognized method for indirect determination of the electric field. It is applied for various plasmas, e.g. barrier and corona discharges for industrial applications or geophysical plasmas occurring in the Earth’s atmosphere. The method relies on the dependence of the intensity ratio R(E/N) of selected bands on the reduced electric field strength. Both experimental and theoretical approaches have been used to determine this dependence, yet there still is a rather large spread in the data available in literature. The primary aim of this work is to quantify the overall uncertainty of the theoretical R(E/N) dependence and identify the main sources of this uncertainty. As the first step we perform sensitivity analysis on a full N2/O2 plasma kinetics model to find a minimal set of processes that are influential for the R(E/N) dependence. It is found to be in agreement with simplified kinetic models generally used. Subsequently, we utilize Monte Carlo-based uncertainty quantification to provide a confidence band for the electric field obtained from the theoretical R(E/N) dependence. Finally, subsequent steps are proposed to significantly reduce the uncertainty of the method.
    WorkplaceInstitute of Plasma Physics
    ContactVladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975
    Year of Publishing2019
    Electronic addresshttp://iopscience.iop.org/article/10.1088/1361-6595/aad663/meta
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