J 2017

Complex interaction of subsequent surface streamers via deposited charge: a high- resolution experimental study

HODER, Tomáš, Petr SYNEK, Dusan CHORVAT, Jozef RÁHEĽ, Ronny BRANDENBURG et. al.

Basic information

Original name

Complex interaction of subsequent surface streamers via deposited charge: a high- resolution experimental study

Authors

HODER, Tomáš (203 Czech Republic, guarantor, belonging to the institution), Petr SYNEK (203 Czech Republic, belonging to the institution), Dusan CHORVAT (703 Slovakia), Jozef RÁHEĽ (703 Slovakia, belonging to the institution), Ronny BRANDENBURG (276 Germany) and Mirko ČERNÁK (703 Slovakia, belonging to the institution)

Edition

Plasma Physics and Controlled Fusion, Bristol, IOP PUBLISHING LTD, 2017, 0741-3335

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10305 Fluids and plasma physics

Country of publisher

United Kingdom of Great Britain and Northern Ireland

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

Impact factor

Impact factor: 3.032

RIV identification code

RIV/00216224:14310/17:00094832

Organization unit

Faculty of Science

DOI

UT WoS

000402411800001

Keywords in English

barrier discharge; streamer; surface charge; electric field; air; surface interaction

Tags

Změněno: 22/3/2021 19:04, doc. RNDr. Jozef Ráheľ, PhD.

Abstract

V originále

The coplanar barrier discharge in synthetic air at 30 kPa pressure was studied by time-correlated single photon counting enhanced optical emission spectroscopy, far-field microscopy enhanced intensified CCD camera and sensitive current measurements. The discharge operated in a regime where two subsequent microdischarges appeared within the same voltage half-period. The electrical analysis of the barrier discharge setup enabled us to quantify charge transfer and the effective electric field development. During the second microdischarge the positive surface streamers follow the interface (triple-line) between the area of deposited charge from the previous one and the area of uncharged dielectric surface. It is shown that additional branching and flashes of surface streamers are responsible for the increased spatial complexity of the deposited surface charges at high overvoltage. A suppressed streamer propagating over the area of deposited surface charge was tracked and the evidence of surface streamer reconnection is presented. A spatiotemporal distribution (resolution of 120 ps and 100 um) of the reduced electric field strength was obtained for both microdischarges from the recorded luminosities of the molecular nitrogen. The reduced electric field of positive streamers in the first microdischarge reached 1200 Td. For the second one, the electric field values for the streamer at the triple-line are slightly lower than that, while for the suppressed streamers are even higher.

Links

CZ.1.05/2.1.00/03.0086, interní kód MU
Name: CEPLANT - Regionální VaV centrum pro nízkonákladové plazmové a nanotechnologické povrchové úpravy
Investor: Ministry of Education, Youth and Sports of the CR, 2.1 Regional R&D Centres
GJ16-09721Y, research and development project
Name: Pokročilé experimentální studium přechodných povrchových výbojů
Investor: Czech Science Foundation
LO1411, research and development project
Name: Rozvoj centra pro nízkonákladové plazmové a nanotechnologické povrchové úpravy (Acronym: CEPLANT plus)
Investor: Ministry of Education, Youth and Sports of the CR