J 2010

Influence of the pre-ionization background and simulation of the optical emission of a streamer discharge in preheated air at atmospheric pressure between two point electrodes

BOURDON, Anne, Zdeněk BONAVENTURA a Sebastien CELESTIN

Základní údaje

Originální název

Influence of the pre-ionization background and simulation of the optical emission of a streamer discharge in preheated air at atmospheric pressure between two point electrodes

Autoři

BOURDON, Anne (250 Francie, garant), Zdeněk BONAVENTURA (203 Česká republika) a Sebastien CELESTIN (250 Francie)

Vydání

PLASMA SOURCES SCIENCE & TECHNOLOGY, 2010, 0963-0252

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10305 Fluids and plasma physics

Stát vydavatele

Velká Británie a Severní Irsko

Utajení

není předmětem státního či obchodního tajemství

Odkazy

Impakt faktor

Impact factor: 2.218

Kód RIV

RIV/00216224:14310/10:00044712

Organizační jednotka

Přírodovědecká fakulta

UT WoS

000277982800013

Klíčová slova anglicky

POSITIVE STREAMERS; PHOTOIONIZATION; PROPAGATION; ALGORITHM; SPRITES; PLASMA
Změněno: 9. 9. 2010 14:55, Mgr. Zdeněk Bonaventura, Ph.D.

Anotace

V originále

Work presents simulations of positive and negative streamers propagating between two point electrodes in preheated air at atmospheric pressure. Seed charges are taken into account in the interelectrode gap. The influence of the pulsed voltage frequency on the discharge structure has been studied. For the studied discharge regime, a change in the applied voltage frequency corresponds to a change in the pre-ionization background. Range of pre-ionization values from 10^4 and up to 10^9 cm-3 . The pre-ionization background has a small influence on the electron density, electric field and location of the negative streamer head. Conversely, it has a significant influence on the positive streamer characteristics. Short time averaging of a few nanoseconds, which corresponds to currently used instruments, the structure of the time-averaged emission of the 2PN2 is different from the instantaneous one and shows negative and positive streamers with smaller radial expansions and more diffuse streamer heads.