Charge transfer equilibrium in surface barrier discharge: continuous current and negative ion-driven ionisation wave

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F19%3A00107807" target="_blank" >RIV/00216224:14310/19:00107807 - isvavai.cz</a>

Result on the web

<a href="https://iopscience.iop.org/article/10.1088/1361-6595/ab4b91" target="_blank" >https://iopscience.iop.org/article/10.1088/1361-6595/ab4b91</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1361-6595/ab4b91" target="_blank" >10.1088/1361-6595/ab4b91</a>

Result language

angličtina

Original language name

Charge transfer equilibrium in surface barrier discharge: continuous current and negative ion-driven ionisation wave

Original language description

Sensitive measurements of very weak electrical currents in sinusoidally driven surface barrier discharge in atmospheric air are reported for discharge arrangements with and without liquid covering the top electrode. The transferred charge of the low-power discharge is carefully quantified and it is shown that after the complete voltage period the total charge balance is approaching zero. This rather obvious result is mechanically assumed in the literature, yet it is experimentally not understood in detail. We show that continuous and pulsed micro-ampere currents measured during the negative polarity are responsible for the gradual renewal of the charge transfer equilibrium abruptly distorted by strong electrical pulses caused by positive streamers during the opposite half-period. Using synchronised ICCD imaging we reveal that weak continuous current is caused by slowly expanding surface discharges stemming from previously established cathode spots. The expansion is caused by a surface ionisation wave. Based on the experimental evidence, supported by the theoretical results found in literature, we conclude that an expanding negative ion cloud is responsible for the electric field enhancement at its forefront which is sufficient to ionise the surrounding air.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10305 - Fluids and plasma physics (including surface physics)

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

2019

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

PLASMA SOURCES SCIENCE and TECHNOLOGY

ISSN

0963-0252

e-ISSN

—

Volume of the periodical

28

Issue of the periodical within the volume

10

Country of publishing house

GB - UNITED KINGDOM

Number of pages

12

Pages from-to

1-12

UT code for WoS article

000494437100004

EID of the result in the Scopus database

2-s2.0-85080067681