Influence of repetition frequency on streamer-to-spark breakdown mechanism in transient spark discharge

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F17%3A00108754" target="_blank" >RIV/00216224:14310/17:00108754 - isvavai.cz</a>

Výsledek na webu

<a href="http://iopscience.iop.org/article/10.1088/1361-6463/aa8940" target="_blank" >http://iopscience.iop.org/article/10.1088/1361-6463/aa8940</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1361-6463/aa8940" target="_blank" >10.1088/1361-6463/aa8940</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Influence of repetition frequency on streamer-to-spark breakdown mechanism in transient spark discharge

Popis výsledku v původním jazyce

Streamer-to-spark transition in a self-pulsing positive transient spark (TS) discharge was investigated at different repetition frequencies. The temporal evolution of the TS was recorded, showing the primary streamer and the secondary streamer phases. A streak camera-like images were obtained using spatio-temporal reconstruction of the discharge emission detected by a photomultiplier tube with light collection system placed on a micrometric translation stage. With increasing TS repetition frequency f (from similar to 1 to 6 kHz), the increase of the propagation velocity of both the primary and the secondary streamer was observed. Acceleration of the primary and secondary streamers, and shortening of streamer-to-spark transition time tau with increasing f was attributed to the memory effect composed of pre-heating and gas composition changes induced by the previous TS pulses. Fast propagation of the secondary streamer through the entire gap and fast gas heating could explain the short tau (similar to 100 ns) at f above similar to 3 kHz.

Název v anglickém jazyce

Influence of repetition frequency on streamer-to-spark breakdown mechanism in transient spark discharge

Popis výsledku anglicky

Streamer-to-spark transition in a self-pulsing positive transient spark (TS) discharge was investigated at different repetition frequencies. The temporal evolution of the TS was recorded, showing the primary streamer and the secondary streamer phases. A streak camera-like images were obtained using spatio-temporal reconstruction of the discharge emission detected by a photomultiplier tube with light collection system placed on a micrometric translation stage. With increasing TS repetition frequency f (from similar to 1 to 6 kHz), the increase of the propagation velocity of both the primary and the secondary streamer was observed. Acceleration of the primary and secondary streamers, and shortening of streamer-to-spark transition time tau with increasing f was attributed to the memory effect composed of pre-heating and gas composition changes induced by the previous TS pulses. Fast propagation of the secondary streamer through the entire gap and fast gas heating could explain the short tau (similar to 100 ns) at f above similar to 3 kHz.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10300 - Physical sciences

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název periodika

Journal of Physics D: Applied Physics

ISSN

0022-3727

e-ISSN

1361-6463

Svazek periodika

50

Číslo periodika v rámci svazku

42

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

8

Strana od-do

1-8

Kód UT WoS článku

000411891400001

EID výsledku v databázi Scopus

2-s2.0-85031111639