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Statements

Subject Item
n2:RIV%2F61389021%3A_____%2F12%3A00381679%21RIV13-AV0-61389021
rdf:type
skos:Concept n9:Vysledek
dcterms:description
We explored basic optical and electrical characteristics of a positive corona-like discharge produced in conductive aqueous solutions by periodic high-voltage pulses. Emission spectra of the discharge were acquired in a needle-to-plate electrode geometry and analyzed in the UV-vis-NIR spectral range with nanosecond time resolution for the solution conductivity of 100 and 500 mS/cm. The most important emission features are due to electronic excitation of HI, OI, OII and OH species. We have found evidence of significant time-dependent line-shape broadening of selected HI and OI transitions. The observed broadening is attributed to the dynamic Stark and pressure broadening mechanisms and significantly increases with the aqueous solution conductivity. Electron densities were estimated by fitting a single Voigt peak function to observed Hđ profiles, and reach as much as ne 4x1018 cm-3 (tD = 300 ns at 100 mS/cm solution) and ne 51018 cm-3 (tD = 1 ms at 500 mS/cm). Temporal evolution of the partially-resolved rotational structure of the OH emission reaches a maximum during the discharge decay, with the onset significantly delayed with respect to the streamer ignition. We explored basic optical and electrical characteristics of a positive corona-like discharge produced in conductive aqueous solutions by periodic high-voltage pulses. Emission spectra of the discharge were acquired in a needle-to-plate electrode geometry and analyzed in the UV-vis-NIR spectral range with nanosecond time resolution for the solution conductivity of 100 and 500 mS/cm. The most important emission features are due to electronic excitation of HI, OI, OII and OH species. We have found evidence of significant time-dependent line-shape broadening of selected HI and OI transitions. The observed broadening is attributed to the dynamic Stark and pressure broadening mechanisms and significantly increases with the aqueous solution conductivity. Electron densities were estimated by fitting a single Voigt peak function to observed Hđ profiles, and reach as much as ne 4x1018 cm-3 (tD = 300 ns at 100 mS/cm solution) and ne 51018 cm-3 (tD = 1 ms at 500 mS/cm). Temporal evolution of the partially-resolved rotational structure of the OH emission reaches a maximum during the discharge decay, with the onset significantly delayed with respect to the streamer ignition.
dcterms:title
Emission spectra of a pulse needle-to-plane corona-like discharge in conductive aqueous solution Emission spectra of a pulse needle-to-plane corona-like discharge in conductive aqueous solution
skos:prefLabel
Emission spectra of a pulse needle-to-plane corona-like discharge in conductive aqueous solution Emission spectra of a pulse needle-to-plane corona-like discharge in conductive aqueous solution
skos:notation
RIV/61389021:_____/12:00381679!RIV13-AV0-61389021
n9:predkladatel
n10:ico%3A61389021
n3:aktivita
n13:P n13:Z
n3:aktivity
P(IAAX00430802), Z(AV0Z20430508)
n3:cisloPeriodika
5
n3:dodaniDat
n19:2013
n3:domaciTvurceVysledku
n7:4439678 n7:5187966 n7:3197751 n7:8384908 n7:8182825
n3:druhVysledku
n4:J
n3:duvernostUdaju
n18:S
n3:entitaPredkladatele
n15:predkladatel
n3:idSjednocenehoVysledku
134195
n3:idVysledku
RIV/61389021:_____/12:00381679
n3:jazykVysledku
n5:eng
n3:klicovaSlova
Water; pulsed electrical breakdown; point-plane geometry; streamer propagation; corona discharge; emission spectroscopy
n3:klicoveSlovo
n14:Water n14:corona%20discharge n14:streamer%20propagation n14:emission%20spectroscopy n14:pulsed%20electrical%20breakdown n14:point-plane%20geometry
n3:kodStatuVydavatele
GB - Spojené království Velké Británie a Severního Irska
n3:kontrolniKodProRIV
[8C807E516ECB]
n3:nazevZdroje
Plasma Sources Science & Technology
n3:obor
n12:BL
n3:pocetDomacichTvurcuVysledku
5
n3:pocetTvurcuVysledku
5
n3:projekt
n17:IAAX00430802
n3:rokUplatneniVysledku
n19:2012
n3:svazekPeriodika
21
n3:tvurceVysledku
Babický, Václav Lukeš, Petr Šunka, Pavel Šimek, Milan Člupek, Martin
n3:wos
000309590200034
n3:zamer
n20:AV0Z20430508
s:issn
0963-0252
s:numberOfPages
12
n11:doi
10.1088/0963-0252/21/5/055031