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 CELESTINZákladní 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.