Investigation of helium barrier discharges with small admixtures of oxygen

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F15%3A00081173" target="_blank" >RIV/00216224:14310/15:00081173 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1088/0022-3727/48/35/355204" target="_blank" >http://dx.doi.org/10.1088/0022-3727/48/35/355204</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1088/0022-3727/48/35/355204" target="_blank" >10.1088/0022-3727/48/35/355204</a>

Result language
angličtina
Original language name
Investigation of helium barrier discharges with small admixtures of oxygen
Original language description
Barrier discharges in helium and in helium with small admixtures of oxygen were investigated by electrical measurements, the spatiotemporally resolved optical emission spectroscopy and surface charge diagnostics via the electro-optic Pockels effect. As already known, in pure helium a diffuse discharge is typically formed because of the significant role of the metastable species. However, even a very small oxygen admixture (0.025 vol.%) causes the transition to a filamentary mode as a result of the effective quenching of helium metastables by oxygen molecules. This effect was indicated by a significant decrease of N-2(+) the first negative system emission. The transition region was characterized by several Townsend-like discharge breakdowns becoming more and more unstable with an increasing O-2 admixture. The formation of the atmospheric pressure Townsend-like discharge was confirmed by the spatiotemporally resolved emission.
Czech name
—
Czech description
—

Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BL - Plasma physics and discharge through gases
OECD FORD branch
—

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Similar results(10)