Experimental investigation of nanosecond corona-like discharge generated in distilled water.

0484389 - ÚFP 2018 RIV HR eng C - Conference Paper (international conference)
Pongrác, Branislav - Šimek, Milan - Babický, Václav - Člupek, Martin - Lukeš, Petr
Experimental investigation of nanosecond corona-like discharge generated in distilled water.
Book of abstracts of the 7th Central European Symposium on Plasma Chemistry. Zagreb: Institut za fiziku, Zagreb, 2017 - (Miloševič, S.; Krstulovič, N.), s. 65. CESPC. ISBN 978-953-7666-16-3.
[Central European Symposium on Plasma Chemistry 2017(CESPC-7)/7./. Sveti Martin na Muri (HR), 03.09.2017-07.09.2017]
R&D Projects: GA ČR(CZ) GA15-12987S
Institutional support: RVO:61389021
Keywords : nanosecond corona-like * ICCD microscopy and spectroscopy
OECD category: Fluids and plasma physics (including surface physics)

Recent results indicate that discharges driven by short nanosecond HV waveforms applied at low repetition rate develop due to the presence of pre-existing voids or that direct ionization of water without bubbles takes place.
We employed techniques of ICCD microscopy and spectroscopy to register basic morphological and emission fingerprints of the corona-like discharge produced in distilled water by applying positive HV pulses of nanosecond duration in point-to-plane electrode geometry. Typical spectra of this discharge are characterized by strong continuum in the UV area superimposed with several unidentified peaks. The vis-NIR area is characterized by the well-known atomic lines typical for water discharges initiated through bubble breakdown (H alpha or OI).

Permanent Link: http://hdl.handle.net/11104/0279559