OES Diagnostics of Pre-Breakdown Light Emission in Coplanar APGD in Helium
| Authors | |
|---|---|
| Year of publication | 2016 |
| Type | Article in Proceedings |
| Conference | 28th Summer School and International Symposium on the Physics of Ionized Gases, Contributed Papers |
| MU Faculty or unit | |
| Citation | |
| Web | http://www.spig2016.ipb.ac.rs/spig2016-book-online.pdf |
| Field | Plasma physics |
| Keywords | OES; pre-breakdown; DBD; coplanar; helium |
| Description | Phase resolved photon counting was applied to record low-resolved optical spectra of pre-breakdown light emitted in coplanar barrier discharge in helium. Light emissions from species as OH*, N2+*, He* as well as thermoluminescence of Al2O3 ceramics were observed during the whole voltage period. Moreover, a light with continuum spectrum was observed shortly before the discharge breakdown. Assuming neutral bremsstrahlung as the origin of the continuum, electric field of 0.5-1 kV/cm was obtained in this discharge phase. |
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