Analysis of the electric field development and the relaxation
of electron velocity distribution function for nanosecond
breakdown in air

J 2016

Analysis of the electric field development and the relaxation of electron velocity distribution function for nanosecond breakdown in air

HODER, Tomáš, Detlef LOFFHAGEN, Jan VORÁČ, Markus BECKER, Ronny BRANDENBURG et. al.

Basic information

Original name

Analysis of the electric field development and the relaxation of electron velocity distribution function for nanosecond breakdown in air

Authors

HODER, Tomáš (203 Czech Republic, guarantor, belonging to the institution), Detlef LOFFHAGEN (276 Germany), Jan VORÁČ (203 Czech Republic, belonging to the institution), Markus BECKER (276 Germany) and Ronny BRANDENBURG (276 Germany)

Edition

Plasma Sources Science and Technology, IOP Pub. 2016, 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: 3.302

RIV identification code

RIV/00216224:14310/16:00087828

Organization unit

Faculty of Science

DOI

http://dx.doi.org/10.1088/0963-0252/25/2/025017

UT WoS

000372337900019

Keywords in English

breakdown; optical emission spectroscopy; sub-nanosecond; electric field; air; atmospheric pressure; Trichel pulse

Abstract

V originále

Using theoretical and experimental methods, the electric field and the electron multiplication in direct vicinity of a sharp cathode is analysed. The development of the electric field in the pre-breakdown phase of the atmospheric pressure air negative DC corona discharge in the Trichel pulse regime is determined. During the following ultra-fast electrical breakdown, the emission of selected spectral bands of the nitrogen molecule is recorded with high spatiotemporal resolution using the time-correlated single photon counting method. The emission of a Townsend discharge is used to calibrate the setup for the quantitative determination of electric field. Therefore, the Trichel pulse corona and Townsend discharge cell are arranged in the same single-table setup. This direct calibration procedure is described step-by-step including the discussion of known limitations. Finally, the electric field development of the positive streamer passing the 160 microns distance in less than two nanoseconds is determined. Due to the high spatiotemporal gradients of the electric field strength within the streamer breakdown, the local field approximation of the electron component is analysed by investigating numerically the temporal and spatial electron relaxation by means of the solution of the electron Boltzmann equation and Monte Carlo simulation. Results of these computations are given for several reduced electric field values and prove that the electrons are in a hydrodynamic equilibrium state for experimentally given space and time scales for reduced elds above 100 Td.

Links

ED2.1.00/03.0086, research and development project

Name: Regionální VaV centrum pro nízkonákladové plazmové a nanotechnologické povrchové úpravy

GA15-04023S, research and development project

Name: Pokročilý výzkum kinetických procesů ve streamerových výbojích

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, Detlef LOFFHAGEN, Jan VORÁČ, Markus BECKER and Ronny BRANDENBURG. Analysis of the electric field development and the relaxation of electron velocity distribution function for nanosecond breakdown in air. Plasma Sources Science and Technology. IOP Pub., 2016, vol. 25, No 2, p. "nestrankovano", 15 pp. ISSN 0963-0252. Available from: https://dx.doi.org/10.1088/0963-0252/25/2/025017.

@article{1337905,
   author = {Hoder, Tomáš and Loffhagen, Detlef and Voráč, Jan and Becker, Markus and Brandenburg, Ronny},
   article_number = {2},
   doi = {http://dx.doi.org/10.1088/0963-0252/25/2/025017},
   keywords = {breakdown; optical emission spectroscopy; sub-nanosecond; electric field; air; atmospheric pressure; Trichel pulse},
   language = {eng},
   issn = {0963-0252},
   journal = {Plasma Sources Science and Technology},
   title = {Analysis of the electric field development and the relaxation of electron velocity distribution function for nanosecond breakdown in air},
   url = {http://iopscience.iop.org/article/10.1088/0963-0252/25/2/025017/meta},
   volume = {25},
   year = {2016}
}

TY  - JOUR
ID  - 1337905
AU  - Hoder, Tomáš - Loffhagen, Detlef - Voráč, Jan - Becker, Markus - Brandenburg, Ronny
PY  - 2016
TI  - Analysis of the electric field development and the relaxation of electron velocity distribution function for nanosecond breakdown in air
JF  - Plasma Sources Science and Technology
VL  - 25
IS  - 2
SP  - "nestrankovano"
EP  - "nestrankovano"
PB  - IOP Pub.
SN  - 09630252
KW  - breakdown
KW  - optical emission spectroscopy
KW  - sub-nanosecond
KW  - electric field
KW  - air
KW  - atmospheric pressure
KW  - Trichel pulse
UR  - http://iopscience.iop.org/article/10.1088/0963-0252/25/2/025017/meta
L2  - http://iopscience.iop.org/article/10.1088/0963-0252/25/2/025017/meta
N2  - Using theoretical and experimental methods, the electric field and the electron multiplication in direct vicinity of a sharp cathode is analysed. The development of the electric field in the pre-breakdown phase of the atmospheric pressure air negative DC corona discharge in the Trichel pulse regime is determined. During the following ultra-fast electrical breakdown, the emission of selected spectral bands of the nitrogen molecule is recorded with high spatiotemporal resolution using the time-correlated single photon counting method. The emission of a Townsend discharge is used to calibrate the setup for the quantitative determination of electric field. Therefore, the Trichel pulse corona and Townsend discharge cell are arranged in the same single-table setup. This direct calibration procedure is described step-by-step including the discussion of known limitations. Finally, the electric field development of the positive streamer passing the 160 microns distance in less than two nanoseconds is determined. Due to the high spatiotemporal gradients of the electric field strength within the streamer breakdown, the local field approximation of the electron component is analysed by investigating numerically the temporal and spatial electron relaxation by means of the solution of the electron Boltzmann equation and Monte Carlo simulation. Results of these computations are given for several reduced electric field values and prove that the electrons are in a hydrodynamic equilibrium state for experimentally given space and time scales for reduced elds above 100 Td.
ER  -

HODER, Tomáš, Detlef LOFFHAGEN, Jan VORÁČ, Markus BECKER and Ronny BRANDENBURG. Analysis of the electric field development and the relaxation of electron velocity distribution function for nanosecond breakdown in air. \textit{Plasma Sources Science and Technology}. IOP Pub., 2016, vol.~25, No~2, p.~''nestrankovano'', 15 pp. ISSN~0963-0252. Available from: https://dx.doi.org/10.1088/0963-0252/25/2/025017.

Detailed Information on Publication Record