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

J 2019

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

HODER, Tomáš, Petr SYNEK and Jan VORÁČ

Basic information

Original name

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

Authors

HODER, Tomáš (203 Czech Republic, guarantor, belonging to the institution), Petr SYNEK (203 Czech Republic, belonging to the institution) and Jan VORÁČ (203 Czech Republic, belonging to the institution)

Edition

PLASMA SOURCES SCIENCE and TECHNOLOGY, BRISTOL, IOP PUBLISHING LTD, 2019, 0963-0252

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:

URL

Impact factor

Impact factor: 3.193

RIV identification code

RIV/00216224:14310/19:00107807

Organization unit

Faculty of Science

DOI

http://dx.doi.org/10.1088/1361-6595/ab4b91

UT WoS

000494437100004

Keywords in English

surface barrier discharge; negative ions; electric current; streamer; electric charge; air; ionisation wave

Abstract

V originále

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.

Links

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

Citovat

HODER, Tomáš, Petr SYNEK and Jan VORÁČ. Charge transfer equilibrium in surface barrier discharge: continuous current and negative ion-driven ionisation wave. PLASMA SOURCES SCIENCE and TECHNOLOGY. BRISTOL: IOP PUBLISHING LTD, 2019, vol. 28, No 10, p. 1-12. ISSN 0963-0252. Available from: https://dx.doi.org/10.1088/1361-6595/ab4b91.

@article{1582599,
   author = {Hoder, Tomáš and Synek, Petr and Voráč, Jan},
   article_location = {BRISTOL},
   article_number = {10},
   doi = {http://dx.doi.org/10.1088/1361-6595/ab4b91},
   keywords = {surface barrier discharge; negative ions; electric current; streamer; electric charge; air; ionisation wave},
   language = {eng},
   issn = {0963-0252},
   journal = {PLASMA SOURCES SCIENCE and TECHNOLOGY},
   title = {Charge transfer equilibrium in surface barrier discharge: continuous current and negative ion-driven ionisation wave},
   url = {https://iopscience.iop.org/article/10.1088/1361-6595/ab4b91},
   volume = {28},
   year = {2019}
}

TY  - JOUR
ID  - 1582599
AU  - Hoder, Tomáš - Synek, Petr - Voráč, Jan
PY  - 2019
TI  - Charge transfer equilibrium in surface barrier discharge: continuous current and negative ion-driven ionisation wave
JF  - PLASMA SOURCES SCIENCE and TECHNOLOGY
VL  - 28
IS  - 10
SP  - 1-12
EP  - 1-12
PB  - IOP PUBLISHING LTD
SN  - 09630252
KW  - surface barrier discharge
KW  - negative ions
KW  - electric current
KW  - streamer
KW  - electric charge
KW  - air
KW  - ionisation wave
UR  - https://iopscience.iop.org/article/10.1088/1361-6595/ab4b91
L2  - https://iopscience.iop.org/article/10.1088/1361-6595/ab4b91
N2  - 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.
ER  -

HODER, Tomáš, Petr SYNEK and Jan VORÁČ. Charge transfer equilibrium in surface barrier discharge: continuous current and negative ion-driven ionisation wave. \textit{PLASMA SOURCES SCIENCE and TECHNOLOGY}. BRISTOL: IOP PUBLISHING LTD, 2019, vol.~28, No~10, p.~1-12. ISSN~0963-0252. Available from: https://dx.doi.org/10.1088/1361-6595/ab4b91.

Detailed Information on Publication Record